Document:

<PAGE>

                                                                    EXHIBIT 10.4

                                   SUBLEASE
                                   --------

     Effective July 1, 2000, INSO CORPORATION, a Delaware corporation
("Sublandlord"), and HOUGHTON MIFFLIN COMPANY, a Massachusetts corporation
("Subtenant"), hereby agree as follows:

     1.   Overlease. As used herein, the term "Overlease" shall mean the Lease
          ---------
dated March 3, 2000, from OMV Associates Limited Partnership ("OMV"), as
Landlord, to Sublandlord, as Tenant, of approximately 10,741 square feet (the
"Premises"), on the third floor of the building located at 31 St. James Avenue,
Boston, Massachusetts 02116 (the "Building") more particularly described in, and
shown as Exhibit A to, the Overlease. A copy of the Overlease is attached hereto
         ---------
as Exhibit A and incorporated herein by reference to the extent set forth
herein.

     2.   Sublease. Sublandlord hereby subleases to Subtenant the Premises,
          --------
subject to the terms and conditions hereof. This Sublease is a sublease under
the Overlease and is subject to all of the terms and provisions thereof. Subject
to the provisions hereof, this Sublease shall be deemed to contain all of the
same covenants, agreements, conditions, terms and provisions as contained in the
Overlease, mutatis mutandis (the necessary changes being made to reflect the
           ------- --------
fact that Sublandlord is the landlord and the Subtenant is the tenant) except to
the extent otherwise provided herein and except that the following provisions of
the Overlease shall not apply hereto:

     Basic Rent as set forth in Section 1 and Section 4
     Section 26 (Condition and Area), except as set forth in Section 8 of this
     Sublease
     Section 35 (Rent Credit)

     3.   Obligations of Parties. Subtenant hereby agrees to perform all of the
          ----------------------
obligations applicable to the Premises imposed on Sublandlord as Tenant under
the Overlease except for the payment of rent and other charges to OMV, subject
to Sections 5, 6 and 7 hereof and except as expressly provided for herein.
Sublandlord shall have no obligations or liabilities under this Sublease except
as specifically provided herein.

     This Sublease is subject and subordinate to the Overlease and shall
terminate upon the expiration or earlier termination of the Overlease, except as
may otherwise be agreed to by OMV pursuant to the Consent of Landlord to
Overlease (the "Consent") attached hereto as Exhibit B, provided, however, that
                                             ---------
the Sublandlord shall indemnify and hold harmless the Subtenant against all
losses, damages and costs, including reasonable attorneys fees, arising or
resulting from any termination of the Overlease occurring as a result of any act
or omission of the Sublandlord. The term "omission" as used in the immediately
preceding sentence shall not include the failure of the Sublandlord to perform
any obligation under the Overlease, including, without limitation, the payment
of rent to OMV, if such failure on the part of the Sublandlord arises or results
from the failure of the Subtenant to fulfill its obligations under this
Sublease.
<PAGE>

     The insurance maintained by Subtenant pursuant to Section 17 of the
Overlease shall name Subtenant, Sublandlord, OMV and any other parties required
by such Section as insureds.

     Subtenant's indemnification obligations shall be deemed to be the same as
those set forth in Section 16 of the Overlease, which Section is incorporated
herein by reference, and shall be for the benefit of Sublandlord and OMV.
"Lessor" as used in said Section 16 shall mean and refer to both Sublandlord and
OMV.

     As between the Sublandlord and the Subtenant, except for the intentional
acts or negligence of the Sublandlord, the Sublandlord shall not be responsible
or liable for any damage or injury to any property, fixtures, buildings or
improvements, or to any person or persons, at any time on the Premises,
including any damage or injury to Subtenant or to any of Subtenant's officers,
agents, servants, employees, contractors, invitees, customers or Subtenants.

     4.   Term; Delivery of Premises. The term of this Sublease shall begin on
          --------------------------
July 1, 2000 (the "Commencement Date") and shall expire on the expiration of the
Initial Term of the Overlease (as defined in the Overlease). Subtenant agrees to
accept the Premises in its "as is" condition on the Commencement Date, without
any obligation on the part of Sublandlord to construct any improvements or
perform any work therein whatsoever. Sublandlord makes no representation or
warranty with respect to the condition thereof.

     5.   Sublease Rent. Subtenant shall pay to Sublandlord Sublease Rent in the
          -------------
amount of $429,640.00 per annum for the term of this Sublease payable in equal
monthly installments of $35,803.33 in advance on or before the first day of each
calendar month, without deduction or set off, such installments to be made in
the manner herein set forth.

     Pursuant to Section 13 of the Overlease, fifty percent of that portion of
the Sublease Rent which exceeds the Basic Rent owed by Sublandlord to OMV under
the Overlease ("Excess Sublease Rent") shall be paid to OMV. The allocation of
the Sublease Rent due to Sublandlord and to OMV in accordance with the Overlease
are as follows:

          Sublandlord's Share of Sublease Rent    50% of Excess Sublease Rent
          ------------------------------------    ---------------------------

Lease Year 1:     $29,003.73 per month                $6,799.60 per month
Lease Year 2:     $29,003.73 per month                $6,799.60 per month
Lease Year 3:     $29,233.14 per month                $6,570.19 per month
Lease Year 4:     $29,462.56 per month                $6,340.77 per month
Lease Year 5:     $29,462.56 per month                $6,340.77 per month

                                       2
<PAGE>

to Sublandlord, Subtenant and Sublandlord agree that Subtenant shall pay
Sublease Rent simultaneously to OMV and Sublandlord each month as follows:

     Until the Rent Credit (as defined in the Overlease) has been exhausted,
     Subtenant shall pay (a) to Sublandlord, Sublandlord's Share of Sublease
     Rent and (b) to OMV, 50% of Excess Sublease Rent. Upon exhaustion of the
     Rent Credit (as will be evidenced by at least thirty (30) days prior
     written notice from Sublandlord to Subtenant), Subtenant shall pay (i) to
     Sublandlord, 50% of Excess Sublease Rent and (ii) to OMV, Sublandlord's
     Share of Sublease Rent.

     6.   Electrical Charge. Subtenant shall pay directly to OMV the
          -----------------
"Electricity Cost" for the Premises in accordance with Section 7 of the
Overlease.

     7.   Escalation and Other Charges. During the term of this Sublease,
          ----------------------------
Subtenant shall pay directly to OMV, the Additional Rent due under the Overlease
as set forth in Section 6 of the Overlease and any other additional rent and
other charges under the Overlease allocable to the Premises.

     8.   Improvements. Subtenant shall obtain the consent of OMV to any
          ------------
improvements or alterations Subtenant shall desire to make in the Premises in
accordance with the provisions of Section 12 of the Overlease as incorporated
herein and such alterations or improvements shall be performed and maintained in
accordance with such Section 12 and at Subtenant's sole cost and expense.

     9.   Notice. Subject to the provisions of Section 20 of the Overlease, all
          ------
notices or communications authorized or required hereunder shall be given to
Sublandlord at 299 Promenade Street, Providence, RI 02908, Attention: General
Counsel, and to Subtenant at 222 Berkeley Street, Boston, MA 02116, Attention:
General Counsel, with a copy to the same address to Attention: Director of
Corporate Services, by certified or registered mail, return receipt requested,
or by a national overnight delivery service which maintains delivery records.
Either party may by written notice to the other designate another address of
such party for the purposes of this section.

     10.  Assignment and Subletting. Notwithstanding any term or provision of
          -------------------------
the Overlease to the contrary, Subtenant shall not assign this Sublease or
sublet all or any part of the Premises without first obtaining the consent of
OMV in accordance with the provisions of Section 13 of the Overlease as
incorporated herein and providing written evidence of such consent and a copy of
such sublease or assignment to Sublandlord. Without limiting the provisions of
said Section 13, Subtenant acknowledges and agrees that, in the event of such
assignment or sublease, Subtenant shall remain liable for Subtenant's
obligations under the Sublease and shall not be released from such obligations
without Sublandlord's consent, which consent shall not be unreasonably withheld.

                                       3
<PAGE>

     11.  Broker. Subtenant represents and warrants to Sublandlord that it has
          ------
not directly or indirectly dealt with any broker or agent with respect to the
Premises, or had its attention called to the Premises by any broker or agent.
Subtenant agrees to save harmless and indemnify Sublandlord against any claims
for a commission arising out of a breach of Subtenant's representations and
warranties in this Section 11.

     12.  Parties. The terms "Sublandlord" and "Subtenant" were used herein
          -------
shall include their respective successors and assigns where the context so
requires or permits and this Sublease shall be binding upon and inure to the
benefit of the parties hereto and their respective successors and assigns.

     13.  Amendments to Overlease. Sublandlord covenants and agrees with
          -----------------------
Subtenant that no provisions of the Overlease shall be amended without
Subtenant's prior written consent, which consent may be withheld in Subtenant's
sole discretion, provided, however, that Sublandlord may amend the Basic Rent
and Rent Credit provisions of the Overlease without Subtenant's consent, but
shall deliver notice and a copy of any such amendment to Subtenant.

     Witness the execution hereof under seal as of the date first above written.

                                               SUBLANDLORD:
                                               -----------

                                               INSO CORPORATION

                                               By:  /s/ Jonathan Levitt
                                                  ------------------------------
                                                  Name:  Jonathan Levitt
                                                  Title: Vice President and
                                                         General Counsel

                                               SUBTENANT:
                                               ---------

                                               HOUGHTON MIFFLIN COMPANY

                                               By:  /s/ Paul Weaver
                                                  ------------------------------
                                                  Name:  Paul Weaver
                                                  Title: Vice President

                                       4
<PAGE>

                      CONSENT OF LANDLORD UNDER OVERLEASE
                      -----------------------------------

     This Consent of Landlord under Overlease is made as of the 1/st/ day of
July, 2000, by and among OMV Associates Limited Partnership ("Landlord"), Inso
Corporation ("Tenant") and Houghton Mifflin Company ("Subtenant").

     WHEREAS, Landlord has leased approximately 10,741 square feet (the
"Premises"), on the third floor of the building located at 31 St. James Avenue,
Boston, Massachusetts 02116 (the "Building") to Tenant under a Overlease dated
March 3, 2000 (the "Overlease").

     WHEREAS, Tenant desires to sublease the Premises to Subtenant pursuant to a
Sublease of even date herewith (the "Sublease");

     WHEREAS, Landlord's consent to the Sublease is required in accordance with
the terms of Section 13 of the Overlease; and

     WHEREAS, all capitalized terms used herein and not otherwise defined shall
have the same meaning attributed to such terms in the Overlease.

     NOW, THEREFORE, in consideration of the mutual covenants contained herein,
the parties hereto hereby agree as follows:

1.   Consent.  Landlord hereby consents to the Sublease, subject to the terms
     -------
     and conditions set forth herein.

2.   Landlord's Obligations. Landlord and Tenant hereby covenant and agree with
     ----------------------
     Subtenant that Landlord's obligations under the Overlease run to the
     benefit of Subtenant and may be enforced by Subtenant directly against
     Landlord, provided, that Subtenant shall provide written notice to Tenant
     of any default of Landlord under the Overlease simultaneously with the
     delivery of any such notice to Landlord by Subtenant and, further provided,
     that Subtenant shall take no action in connection with the enforcement of
     such Landlord obligations which may cause a default under the Overlease,
     without Tenant's prior written consent. Landlord further agrees to deliver
     copies of any other notices sent to Sublandlord (including any rent bills
     issued by Landlord) simultaneously to Subtenant at the address set forth
     for Subtenant in the Sublease.

3.   Landlord Consents. Landlord hereby covenants and agrees with Subtenant
     -----------------
     that, in the event that Subtenant requests Landlord's consent pursuant to
     any applicable section of the Overlease, and, pursuant to such section of
     the Overlease Landlord has agreed with Tenant not to unreasonably withhold
     its consent, then, Landlord shall not unreasonably withhold its consent to
     such request by Subtenant.
<PAGE>

4.   In consideration of the foregoing Sublease, and intending to be legally
     bound, Landlord hereby represents, warrants and agrees as follows:

     (a)  The Overlease is unmodified and in full force and effect, has not been
          otherwise assigned or subleased, and represents the entire agreement
          between Landlord and Tenant regarding the Premises, and there are no
          other agreements, options, leases or understandings of any nature
          between the Landlord and Tenant, or with any other party for the
          lease, use, occupancy or purchase of the Premises.

     (b)  There are no existing set-offs or defenses against the enforcement by
          Tenant of any of the agreements, terms, covenants or conditions of the
          Overlease on the part of Landlord to be performed or complied with.

     (c)  The Area A Commencement Date under the Overlease is March 3, 2000, the
          Area B Commencement Date under the Overlease is May 1, 2000 and the
          term of the Lease, for both Area A and Area B, expires on March 31,
          2005.

     (d)  Tenant is not in default under the Overlease to date and, to the best
          of Landlord's knowledge, there exists no state of facts which with the
          passage of time or the giving of notice could ripen into a default.

5.   Consent to Renovations. Landlord acknowledges that Subtenant has submitted
     ----------------------
     to Landlord for Landlord's review plans for alterations to the Premises
     ("Subtenant's Work") in accordance with Section 12 of the Overlease.
     Landlord hereby consents to the Subtenant's Work as shown on the demolition
     plans submitted to Landlord by Subtenant on May 2, 2000.

6.   Notice. All notices given hereunder shall delivered in accordance with the
     ------
     applicable provisions of the Overlease and Sublease.

     Witness the execution hereof under seal as of the date first above written.

                                        LANDLORD:
                                        --------

                                        OMV ASSOCIATES LIMITED PARTNERSHIP

                                        By: Park Square Corporation,
                                            its General Partner

                                        By:   /s/ Richard D. Cohen
                                           -----------------------------------
                                           Name:  Richard D. Cohen
                                           Title: President

                                       2
<PAGE>

                                        TENANT:
                                        ------

                                        INSO CORPORATION

                                        By:  /s/ Jonathan Levitt
                                           ------------------------------
                                           Name:  Jonathan Levitt
                                           Title: Vice President and
                                                  General Counsel

                                        SUBTENANT:
                                        ---------

                                        HOUGHTON MIFFLIN COMPANY

                                        By:  /s/ Paul Weaver
                                           ------------------------------
                                           Name:  Paul Weaver
                                           Title: Vice President

                                       3<PAGE>
                                                                  EXHIBIT 10.1

                      SECOND LOAN MODIFICATION AGREEMENT

     This Second Loan Modification Agreement is entered into as of July 25,
2000, by and between SEACHANGE INTERNATIONAL, INC., a Delaware corporation with
its principal place of business at 124 Acton Street, Maynard, Massachusetts
("Borrower"), and SILICON VALLEY BANK, a California-chartered bank ("Lender"),
with its principal place of business at 3003 Tasman Drive, Santa Clara, CA 95054
and with a loan production office located at Wellesley Office Park, 40 William
Street, Suite 350, Wellesley, MA 02481, doing business under the name "Silicon
Valley East".

1.   DESCRIPTION OF EXISTING INDEBTEDNESS. Among other indebtedness which may be
     ------------------------------------
owing by Borrower to Lender, Borrower is indebted to Lender pursuant to, among
other documents, a Loan and Security Agreement dated November 10, 1998, as
amended by First Loan Modification Agreement dated as of March 27, 2000 (as
may be amended, the "Loan Agreement"). Capitalized terms used but not otherwise
defined herein shall have the same meaning as in the Loan Agreement.

Hereinafter, all indebtedness owing by Borrower to Lender shall be referred to
as the "Indebtedness".

2.   DESCRIPTION OF COLLATERAL AND GUARANTIES. Repayment of the Indebtedness is
     ----------------------------------------
secured as described in the Loan Agreement (together with any other collateral
security granted to Lender, the "Security Documents").

Hereinafter, the Security Documents, together with all other documents
evidencing or securing the Indebtedness shall be referred to as the "Existing
Loan Documents".

3.   DESCRIPTION OF CHANGE IN TERM.
     -----------------------------

     A.   Modifications to Loan Agreement.
          -------------------------------

          1.   The Loan Agreement shall be amended by deleting the following
               definitions:

               "Approved Foreign Accounts" means Accounts with respect to which
               the account debtor does not have its principal place of business
               in the United States, which the Bank approves on a case by case
               basis.

               "Eligible Foreign Accounts" means Accounts with respect to which
               the account debtor does not have its principal place of business
               in the United States or Canada and that are: (1) covered by
               credit insurance in form and amount, and by an insurer
               satisfactory to Bank less the amount of any deductible(s) which
               may be or become owing thereon; or (2) supported by one or more
               letters of credit in an amount and of a tenor, and issued by a
               financial institution, acceptable to Bank.

          2.   The Loan Agreement shall be amended by deleting the following
               definition in Section 1.1:

               "Code" means the California Uniform Commercial Code."

               and substituting therefor the following:
<PAGE>

               "Code" means the Uniform Commercial Code, as adopted in
               Massachusetts, as may be amended from time to time."

          3.   The Loan Agreement shall be amended by deleting the following
               definition in Section 1.1:

          "Eligible Accounts" means those Accounts that arise in the ordinary
          course of Borrower's business that comply with all of Borrower's
          representations and warranties to Bank set forth in Section 5.4.
          Unless otherwise agreed to by Bank in writing, Eligible Accounts shall
          not include the following:

               (a)  Accounts that the account debtor has failed to pay within
          ninety (90) days of invoice date;

               (b)  Accounts with respect to an account debtor, fifty percent
          (50%) of whose Accounts the account debtor has failed to pay within
          ninety (90) days of invoice date;

               (c)  Accounts with respect to an account debtor, including
          Affiliates, whose total obligations to Borrower exceed twenty-five
          percent (25%) of all Accounts, to the extent such obligations exceed
          the aforementioned percentage, except as approved in writing by Bank;

               (d)  Accounts with respect to which the account debtor does not
          have its principal place of business in the United States, except for
          account debtors having their principal place of business in Canada;

               (e)  Accounts with respect to which the account debtor is a
          federal, state, or local governmental entity or any department,
          agency or instrumentality thereof, except for those Accounts of the
          United States or any department, agency or instrumentality thereof as
          to which the payee has assigned its rights to payment thereof to Bank
          and the assignment has been acknowledged, pursuant to the Assignment
          of Claims Act of 1940, as amended (31 U.S.C. 3727);

               (f)  Accounts with respect to which Borrower is liable to the
          account debtor, but only to the extent of any amounts owing to the
          account debtor (sometimes referred to as "contra" accounts, e.g.
          accounts payable, customer deposits, credit accounts etc.);

               (g)  Accounts generated by demonstration or promotional
          equipment, or with respect to which goods are placed on consignment,
          guaranteed sale, sale or return, sale on approval, bill and hold, or
          other terms by reason of which the payment by the account debtor may
          be conditional;

               (h)  Accounts with respect to which the account debtor is an
          Affiliate, officer, employee, or agent of Borrower;

               (i)  Accounts with respect to which the account debtor disputes
          liability or makes any claim with respect thereto as to which Bank has
          reasonably determined, in accordance with its standard commercial
          practices, that there may be a basis for dispute (but only to the
          extent of the amount subject to such dispute or claim), or is subject
          to any Insolvency Proceeding, or becomes insolvent, or goes out of
          business; and

                                      -2-
<PAGE>

               (j)  Accounts the collection of which Bank reasonably determines
          in accordance with its standard commercial practices to be doubtful.

               and by substituting therefor the following:

          "Eligible Accounts" means those Accounts that arise in the ordinary
          course of Borrower's business that comply with all of Borrower's
          representations and warranties to Bank set forth in Section 5.4.
          Unless otherwise agreed to by Bank in writing, Eligible Accounts shall
          not include the following:

               (a)  Accounts that the account debtor has failed to pay within
          ninety (90) days of invoice date;

               (b)  Accounts with respect to an account debtor, fifty percent
          (50%) of whose Accounts the account debtor has failed to pay within
          ninety (90) days of invoice date;

               (c)  Accounts with respect to an account debtor, including
          Affiliates, whose total obligations to Borrower exceed thirty-five
          percent (35%) of all Accounts (forty percent (40.0%) for Time Warner
          Accounts), which shall be limited to fifteen percent (15.0%) per site
          (twenty percent (20.0%) for Time Warner Accounts), to the extent such
          obligations exceed the aforementioned percentage, except as approved
          in writing by Bank;

               (d)  Accounts with respect to which the account debtor does not
          have its principal place of business in the United States;

               (e)  Accounts with respect to which the account debtor is a
          federal, state, or local governmental entity or any department,
          agency, or instrumentality thereof, except for those Accounts of the
          United States or any department, agency or instrumentality thereof as
          to which the payee has assigned its rights to payment thereof to Bank
          and the assignment has been acknowledged, pursuant to the Assignment
          of Claims Act of 1940, as amended (31 U.S.C. 3727);

               (f)  Accounts with respect to which Borrower is liable to the
          account debtor, but only to the extent of any amounts owing to the
          account debtor (sometimes referred to as "contra" accounts, e.g.
          accounts payable, customer deposits, credit accounts etc.);

               (g)  Accounts generated by demonstration or promotional
          equipment, or with respect to which goods are placed on consignment,
          guaranteed sale, sale or return, sale on approval, bill and hold, or
          other terms by reason of which the payment by the account debtor may
          be conditional;

               (h)  Accounts with respect to which the account debtor is an
          Affiliate, officer, employee, or agent of Borrower;

               (i)  Accounts with respect to which the account debtor disputes
          liability or makes any claim with respect thereto as to which Bank
          believes, in its sole discretion, that there may be a basis for
          dispute (but only to the extent of the amount subject to such
          dispute or claim), or is subject to any Insolvency Proceeding, or
          becomes insolvent, or goes out of business; and

                                      -3-
<PAGE>

               (j)  Accounts the collection of which Bank reasonably determines
          in accordance with its standard commercial practices to be doubtful.

          4.   The Loan Agreement shall be amended by deleting the following
               definition for Maturity Date:

               ""Maturity Date" means, as applicable, (i) the Revolving Maturity
               Date with respect to Advances, and (ii) the Equipment Maturity
               Date No. 1 and the Equipment Maturity Date No. 2, as applicable,
               with respect to Equipment Advances."

               and substituting therefor the following:

               ""Maturity Date" means, as applicable, (i) the Revolving Maturity
               Date with respect to Advances, and (ii) the Equipment Maturity
               Date No. 1, Equipment Maturity Date No. 2, Equipment Maturity
               Date No. 3, Equipment Maturity Date No. 4, and Equipment Maturity
               Date No. 5, as applicable, with respect to Equipment Advances."

          5.   The Loan Agreement shall be amended by deleting the following
               definition for Committed Equipment Line:

               "Committed Equipment Line" means a credit extension of up to
               Three Million Dollars ($3,000,000.00) for Equipment Line No. 1,
               and Equipment Line No. 2, plus Two Million Dollars
               ($2,000,000.00) for Equipment Line No. 3."

               and substituting therefor the following"

               "Committed Equipment Line" means a credit extension of up to
               Three Million Dollars ($3,000,000.00) for Equipment Line No. 1,
               and Equipment Line No. 2, plus Two Million Dollars
               ($2,000,000.00) for Equipment Line No. 3, plus Four Million
               Dollars ($4,000,000.00) for Equipment Line No. 4."

          6.   The Loan Agreement shall be amended by deleting the following
               definition for Committed Revolving Line:

               "Committed Revolving Line" means a credit extension of up to Six
               Million Dollars ($6,000,000.00)."

               and substituting therefor the following:

               "Committed Revolving Line" means a credit extension of up to
               Seven Million Five Hundred Thousand Dollars ($7,500,000.00)."

          7.   The Loan Agreement shall be amended by deleting the following
               definition for Revolving Maturity Date:

               ""Revolving Maturity Date" means March 31, 2000."

               and substituting therefor the following:

                                      -4-
<PAGE>

               ""Revolving Maturity Date" means March 31, 2001"

          8.   The Loan Agreement shall be amended by deleting the following
               Section 2.3 (a):

               "(a) Interest Rate. Except as set forth in Section 2.3(b), any
                    -------------
               Advances under the Committed Revolving Line shall bear interest,
               on the average daily balance thereof, at a per annum rate equal
               to: (i) One Half of One percent (0.5%) above the Prime Rate prior
               to the Debt Service Coverage Event, and (ii) the Prime Rate
               beginning on the date which is the Debt Service Coverage Event."

               and by substituting therefor the following:

               "(a) Interest Rate. Except as set forth in Section 2.3(b), any
                    -------------
               Advances under the Committed Revolving Line shall bear interest
               in accordance with the LIBOR Supplement to Agreement attached
               hereto as Appendix 1."
                         ----------

          9.   The Loan Agreement shall be amended by inserting into Section
               1.1, the following definitions:

               "Equipment Line No. 4" has the meaning set forth in Section
               2.1.2.

               "Equipment Availability End Date No. 4" has the meaning set forth
               in Section 2.12.

               "Equipment Availability End Date No. 5" has the meaning set forth
               in Section 2.1.2.

               "Equipment Maturity Date No. 4" means September 1, 2003.

               "Equipment Maturity Date No. 5" means March 1, 2004.

               "EXIM Loan" means a certain Export-Import Bank Loan and Security
               Agreement between the Borrower and Bank dated as of _________ __,
               2000, and all documents executed in connection therewith and
               related thereto.

          10.  The Loan Agreement shall be amended by deleting the following
               Section 2.1.2:

               "2.1.2    Equipment Advances.
                         ------------------

               (a)       Subject to and upon the terms and conditions of this
                         Agreement, Bank agrees to make advances (each an
                         "Equipment Advance" and collectively, the "Equipment
                         Advances") to Borrower: (i) in one advance to take
                                                        ---
                         place at any time after the Closing Date through thirty
                         (30) days after the Closing Date (the "Equipment
                         Availability End Date No. 1") in the aggregate
                         outstanding amount not to exceed Two Million Dollars
                         ($2,000,000.00) (the "Equipment Line No. 1"), and (ii)
                         at any time and from time to time from the Equipment
                         Availability End Date No. 1 through June 30, 1999 (the
                         "Equipment Availability End Date No. 2") in the
                         aggregate outstanding amount not to exceed Three
                         Million Dollars ($3,000,000.00) less the
                                                         ----

                                      -5-
<PAGE>

                         cumulative Equipment Advances made under Equipment Line
                         No. 1 (the "Equipment Line No. 2"), and (iii) at any
                         time and from time to time from March 13, 2000 through
                         March 31, 2000 (the "Equipment Availability End Date
                         No. 3") in the aggregate outstanding amount not to
                         exceed Two Million Dollars ($2,000,000.00) (the
                         "Equipment Line No. 3"). To evidence the Equipment
                         Advances, Borrower shall deliver to Bank, at the time
                         of each Equipment Advance request, an invoice for the
                         equipment to be purchased or refinanced. Equipment
                         Advance requests under Equipment Line No. 1 shall only
                         be permitted for Equipment purchased between July 2,
                         1997 and June 30, 1998. Equipment Advance requests
                         under Equipment Line No. 2 shall only be permitted for
                         Equipment purchased between July 1, 1998 and June 30,
                         1999. Equipment Advance requests under Equipment Line
                         No. 3 shall be used only for Equipment purchased
                         through March 31, 2000. The Equipment Advances shall be
                         used only to purchase or refinance Equipment and shall
                         not exceed: (i) eighty percent (80.0%) of the invoice
                         amount on such equipment, including software, approved
                         from time to time by Bank under Equipment Line No. 1,
                         and (ii) one hundred percent (100%) of the invoice
                         amount on such equipment, including software, approved
                         from time to time by Bank in accordance with its
                         standard commercial practices under Equipment Line No.
                         2, and Equipment Line No. 3, each of (i) and (ii)
                         excluding taxes, shipping, warranty charges, freight
                         discounts, and installation expense.

               (b)       Interest shall accrue from the date of each Equipment
                         Advance at the per annum rate of: (i) for Equipment
                         Line No. 1, and Equipment Line No. 2, one percent
                         (1.0%) above the Prime Rate, and (ii) for Equipment
                         Line No. 3, at one half of one percent (.50%) above the
                         Prime Rate. Interest shall be payable monthly on the
                         Payment Date of each month. Any Equipment Advances made
                         pursuant to the Equipment Line No. 1 that are
                         outstanding on the Equipment Availability End Date No.
                         1 will be payable in Thirty (30) equal monthly
                         installments of principal, plus all accrued interest,
                         beginning on the Payment Date of the month following
                         Equipment Availability End Date No. 1 and ending on the
                         Equipment Maturity Date No. 1. Any Equipment Advances
                         made pursuant to the Equipment Line No. 2 that are
                         outstanding on the Equipment Availability End Date No.
                         2 will be payable in Thirty-Six (36) equal monthly
                         installments of principal, plus all accrued interest,
                         beginning on the Payment Date of the month following
                         Equipment Availability End Date No. 2 and ending on the
                         Equipment Maturity Date No. 2. Any Equipment Advances
                         made pursuant to the Equipment Line No. 3 that are
                         outstanding on the Equipment Availability End Date No.
                         3 will be payable in Thirty-Six (36) equal monthly
                         installments of principal, plus all accrued interest,
                         beginning on the Payment Date of the month following
                         Equipment Availability End Date No. 3 and ending on the
                         Equipment Maturity Date No. 3. Equipment Advances, once
                         repaid, may not be reborrowed.

               (c)       When Borrower desires to obtain an Equipment Advance,
                         Borrower shall notify Bank (which notice shall be
                         irrevocable) by facsimile transmission to be received
                         no later than 3:00 p.m. Eastern time one (1) Business
                         Day before the day on which the Equipment Advance is to
                         be made. Such notice

                                      -6-
<PAGE>

                    shall be substantially in the form of Exhibit B. The notice
                    shall be signed by a Responsible Officer or its designee and
                    include a copy of the invoice for the Equipment to be
                    financed."

          and substituting therefor the following:

          "2.1.2    Equipment Advances.
                    ------------------

          (a)       Subject to and upon the terms and conditions of this
                    Agreement, Bank agrees to make advances (each an "Equipment
                    Advance" and collectively, the "Equipment Advances") to
                    Borrower: (i) in one advance to take place at any time after
                                     ---
                    the Closing Date through thirty (30) days after the Closing
                    Date (the "Equipment Availability End Date No. 1") in the
                    aggregate outstanding amount not to exceed Two Million
                    Dollars ($2,000,000.00) (the "Equipment Line No. 1"), and
                    (ii) at any time and from time to time from the Equipment
                    Availability End Date No. 1 through June 30, 1999 (the
                    "Equipment Availability End Date No. 2") in the aggregate
                    outstanding amount not to exceed Three Million Dollars
                    ($3,000,000.00) less the cumulative Equipment Advances made
                                    ----
                    under Equipment Line No. 1 (the "Equipment Line No. 2"), and
                    (iii) at any time and from time to time from March 13, 2000
                    through March 31, 2000 (the "Equipment Availability End Date
                    No. 3") in the aggregate outstanding amount not to exceed
                    Two Million Dollars ($2,000,000.00) (the "Equipment Line
                    No. 3"), and (iv) at any time and from time to time from
                    __________, 2000 through September 30, 2000 (the "Equipment
                    Availability End Date No. 4") in the aggregate outstanding
                    amount not to exceed Four Million Dollars ($4,000,000.00)
                    (the "Equipment Line No. 4"), and (v) at any time and from
                    time to time from the Equipment Availability End Date No. 4
                    through March 31, 2001 (the "Equipment Availability End
                    Date No. 5") in the aggregate outstanding amount not to
                    exceed Four Million Dollars ($4,000,000.00) less the
                                                                ----
                    cumulative Equipment Advances made under Equipment Line
                    No. 4. To evidence the Equipment Advances, Borrower shall
                    deliver to Bank, at the time of each Equipment Advance
                    request, an invoice for the equipment to be purchased or
                    refinanced. Equipment Advance requests under Equipment Line
                    No. 1 shall only be permitted for Equipment purchased
                    between July 2, 1997 and June 30, 1998. Equipment Advance
                    requests under Equipment Line No. 2 shall only be permitted
                    for Equipment purchased between July 1, 1998 and June 30,
                    1999. Equipment Advance requests under Equipment Line No. 3
                    shall be used only for Equipment purchased through March 31,
                    2000. Equipment Advance requests under Equipment Line No. 4
                    shall be used only for Equipment purchased on or after April
                    1, 2000. Equipment Advance Requests under Equipment Line
                    No. 5 shall be used only for Equipment purchased on or after
                    October 1, 2000, for invoices dated no more that sixty (60)
                    days prior to the requested Equipment Advance. The Equipment
                    Advances shall be used only to purchase or refinance
                    Equipment and shall not exceed: (i) eighty percent (80.0%)
                    of the invoice amount on such equipment, including
                    software, approved from time to time by Bank under Equipment
                    Line No. 1, and (ii) one hundred percent (100%) of the
                    invoice amount on such equipment, including software,
                    approved from time to time by Bank in accordance with its
                    standard commercial practices under

                                      -7-
<PAGE>

                    Equipment Line No. 2, Equipment Line No. 3, Equipment Line
                    No. 4, and Equipment Line No. 5 each of (i) and (ii)
                    excluding taxes, shipping, warranty charges, freight
                    discounts, and installation expense. No more that twenty
                    five percent (25.0%) of aggregate Equipment Advances shall
                    constitute software.

          (b)       Interest shall accrue from the date of each Equipment
                    Advance at the per annum rate of: (i) for Equipment Line No.
                    1, and Equipment Line No. 2, one percent (1.0%) above the
                    Prime Rate, and (ii) for Equipment Line Nos. 3, 4 and 5, at
                    one half of one percent (.50%) above the Prime Rate.
                    Interest shall be payable monthly on the Payment Date of
                    each month. Any Equipment Advances made pursuant to the
                    Equipment Line No. 1 that are outstanding on the Equipment
                    Availability End Date No. 1 will be payable in Thirty (30)
                    equal monthly installments of principal, plus all accrued
                    interest, beginning on the Payment Date of the month
                    following Equipment Availability End Date No. 1 and ending
                    on the Equipment Maturity Date No. 1. Any Equipment Advances
                    made pursuant to the Equipment Line No. 2 that are
                    outstanding on the Equipment Availability End Date No. 2
                    will be payable in Thirty-Six (36) equal monthly
                    installments of principal, plus all accrued interest,
                    beginning on the Payment Date of the month following
                    Equipment Availability End Date No. 2 and ending on the
                    Equipment Maturity Date No. 2. Any Equipment Advances made
                    pursuant to the Equipment Line No. 3 that are outstanding on
                    the Equipment Availability End Date No. 3 will be payable in
                    Thirty-Six (36) equal monthly installments of principal,
                    plus all accrued interest, beginning on the Payment Date of
                    the month following Equipment Availability End Date No. 3
                    and ending on the Equipment Maturity Date No. 3. Any
                    Equipment Advances made pursuant to the Equipment Line No. 4
                    that are outstanding on the Equipment Availability End Date
                    No. 4 will be payable in Thirty-Six (36) equal monthly
                    installments of principal, plus all accrued interest
                    beginning on the Payment Date of the month following
                    Equipment Availability End Date No. 4 and ending on the
                    Equipment Maturity Date No. 4. Any Equipment Advances made
                    pursuant to the Equipment Line No. 5 that are outstanding on
                    the Equipment Availability End Date No. 5 will be payable in
                    Thirty-Six (36) equal monthly installments of principal,
                    plus all accrued interest, beginning on the Payment Date of
                    the month following Equipment Availability End Date No. 5
                    and ending on the Equipment Maturity Date No. 5. Equipment
                    Advances, once repaid, may not be reborrowed.

          (c)       When Borrower desires to obtain an Equipment Advance,
                    Borrower shall notify Bank (which notice shall be
                    irrevocable) by facsimile transmission to be received no
                    later than 3:00 p.m. Eastern time one (1) Business Day
                    before the day on which the Equipment Advance is to be made.
                    Such notice shall be substantially in the form of Exhibit B.
                    The notice shall be signed by a Responsible Officer or its
                    designee and include a copy of the invoice for the Equipment
                    to be financed."

     11.  The Loan Agreement shall be amended by deleting the following in
          Section 6.3:

                                      -8-
<PAGE>

          "6.3  Financial Statements, Reports, Certificates. Borrower shall
                -------------------------------------------
          deliver to Bank: (a) as soon as available, but in any event within
          forty-five (45) days after the end of each quarter, a company prepared
          consolidated balance sheet and income statement covering Borrower's
          consolidated operations during such period, in a form and certified by
          an officer of Borrower reasonably acceptable to Bank; (b) as soon as
          available, but in any event within thirty (30) days after the end of
          each month, a company prepared consolidated revenue and expense
          statement covering Borrower's consolidated operations during such
          period, in form reasonably acceptable to Bank; (c) as soon as
          available, but in any event within ninety (90) days after the end of
          Borrower's fiscal year, audited consolidated financial statements of
          Borrower prepared in accordance with GAAP, consistently applied,
          together with an unqualified opinion on such financial statements of
          an independent certified public accounting firm reasonably acceptable
          to Bank; (d) promptly upon receipt of notice (thereof, a report of any
          legal actions pending or threatened against Borrower or any Subsidiary
          that could result in damages or costs to Borrower or any Subsidiary of
          Two Hundred Fifty Thousand Dollars ($250,000) or more; (e) prompt
          notice of any material change in the composition of the Intellectual
          Property Collateral, including, but not limited to, any subsequent
          ownership right of the Borrower in or to any Copyright, Patent or
          Trademark not specified in any intellectual property security
          agreement between Borrower and Bank or knowledge of an event other
          than information that is publicly available and applicable generally
          to Borrower's business practices and industry that materially
          adversely effects the value of the Intellectual Property Collateral;
          and (f) such budgets, sales projections, operating plans or other
          financial information as Bank may reasonably request from time to
          time.

          Within twenty (20) days after the last day of each month, Borrower
          shall deliver to Bank a Borrowing Base Certificate signed by a
          Responsible Officer in substantially the form of Exhibit C hereto,
                                                           ---------
          together with aged listings of accounts receivable.

          Within forty-five (45) days after the fast day of each quarter,
          Borrower shall deliver to Bank with the quarterly financial statements
          a Compliance Certificate signed by a Responsible Officer in
          substantially the form of Exhibit D hereto.
                                    ---------

          Bank shall have a right from time to time hereafter to audit
          Borrower's Accounts at Borrower's expense, provided that such audits
          will be conducted no more often than every six (6) months unless an
          Event of Default has occurred and is continuing."

          and inserting in lieu thereof the following:

           "6.3  Financial Statements, Reports, Certificates. Borrower shall
                 -------------------------------------------
           deliver to Bank: (a) as soon as available, but in any event within
           forty-five (45) days after the end of each quarter, a company
           prepared consolidated balance sheet and income statement covering
           Borrower's consolidated operations during such period, in a form and
           certified by an officer of Borrower reasonably acceptable to Bank;
           (b) as soon as available, but in any event within thirty (30) days
           after the end of each month, a company prepared consolidated revenue
           end expense statement covering Borrower's consolidated operations
           during such period. in form reasonably acceptable to Bank; (c) as
           soon as available, but in any event within one hundred twenty (120)
           days after the end of Borrower's fiscal year, audited consolidated
           financial statements of Borrower prepared in accordance with GAAP,
           consistently

                                      -9-
<PAGE>

          applied, together with an unqualified opinion on such financial
          statements of an independent certified public accounting firm
          reasonably acceptable to Bank; (d) promptly upon receipt of notice
          thereof, a report of any legal actions pending or threatened against
          Borrower or any Subsidiary that could result in damages or costs to
          Borrower or any Subsidiary of Two Hundred Fifty Thousand Dollars
          ($250,000) or more; (e) prompt notice of any material change in the
          composition of the Intellectual Property Collateral, including, but
          not limited to, any subsequent ownership right of the Borrower in or
          to any Copyright, Patent or Trademark not specified in any
          intellectual property security agreement between Borrower and Bank or
          knowledge of an event other than information that is publicly
          available and applicable generally to Borrower's business practices
          and industry that materially adversely effects the value of the
          Intellectual Property Collateral; and (f) such budgets, sales
          projections, operating plans or other financial information as Bank
          may reasonably request from time to time.

          Within twenty (20) days after the last day of each month in which any
          Credit Extensions are outstanding or requested, Borrower shall deliver
          to Bank a Borrowing Base Certificate signed by a Responsible Officer
          in substantially the form of Exhibit C hereto, together with aged
                                       ---------
          listings of accounts receivable.

          Within forty-five (45) days after the last day of each quarter,
          Borrower shall deliver to Bank with the quarterly financial statements
          a Compliance Certificate signed by a Responsible Officer in
          substantially the form of Exhibit D hereto.
                                    ---------

          Bank shall have a right from time to time hereafter to audit
          Borrower's Accounts at Borrower's expense, provided that such audits
          will be conducted no more often than every twelve (12) months unless
          an Event of Default has occurred and is continuing."

     12.  The Loan Agreement shall be amended by deleting the following
          financial covenant appearing as Section 6.12:

          "6.12  Profitability. Borrower shall maintain, measured as of the last
                 -------------
          day of each quarter: (i) a profit of One Hundred Thousand Dollars
          ($100,000.00) as of the last day of the first quarter of fiscal year
          2000; (ii) a profit of Two Hundred Thousand Dollars ($200,000.00) as
          of the last day of the second and third quarters of fiscal year 2000;
          and (iii) a profit of Three Hundred Thousand Dollars ($300,000.00) as
          of the last day of the fourth quarter of fiscal year 2000, with an
          allowance for one quarterly loss during such fiscal year of no greater
          than One Hundred Thousand Dollars ($100,000.00). Notwithstanding the
          foregoing, the Borrower shall maintain a profit for fiscal year 2000
          of Eight Hundred Thousand Dollars ($800,000.000)."

          and substituting the following:

          "6.12  Profitability. Borrower shall maintain, measured as of the last
                 -------------
          day of each quarter: (i) a profit of One Hundred Thousand Dollars
          ($100,000.00) as of the last day of the first quarter of fiscal year
          2001; (ii) a profit of Two Hundred Thousand Dollars ($200,000.00) as
          of the last day of the second and third quarters of fiscal year 2001;
          and (iii) a profit of Three Hundred Thousand Dollars ($300,000.00) as
          of the last day of the fourth quarter of fiscal year 2001, with an
          allowance for one quarterly loss during such fiscal year of no greater
          than One Hundred Thousand Dollars ($100,000.00). Notwithstanding the
          foregoing, the Borrower shall maintain a profit for fiscal year 2001
          of Eight Hundred Thousand Dollars ($800,000.000).

                                      -10-
<PAGE>

          Borrower shall maintain, measured as of the last day of each quarter:
          (i) a profit of One Dollar ($1.00) as of the last day of each quarter
          of fiscal years 2002, and 2003"

     13.  The Loan Agreement shall be amended by deleting the following Section
          2.1.1 (a):

          "2.1.1(a)     Subject to and upon the terms and conditions of this
          Agreement, Bank agrees to make Advances to Borrower in an aggregate
          outstanding amount not to exceed the Committed Revolving Line of the
          Borrowing Base, whichever is less. Subject to the terms and conditions
          of this Agreement, amounts borrowed pursuant to this Section 2.1 may
          be repaid and reborrowed at any time during the term of this
          Agreement."

          and substituting therefor the following:

          "2.1.1(a)     Subject to and upon the terms and conditions of this
          Agreement, Bank agrees to make Advances to Borrower in an aggregate
          outstanding amount not to exceed (a) the lesser of the Committed
          Revolving Line of the Borrowing Base, minus(b) all Obligations under
          the Committed Equipment Line, minus (c)the amount of all other
          extensions of credit by the Bank (other than the EXIM Loan). Subject
          to the terms and conditions of this Agreement, amounts borrowed
          pursuant to this Section 2.1 may be repaid and reborrowed at any time
          during the term of this Agreement. Notwithstanding the foregoing, the
          Obligations (as defined hereunder) and obligations under the EXIM
          Loan, in the aggregate, shall not exceed the amount of Twelve Million
          Five Hundred Thousand Dollars ($12,500,000.00)."

     14.  The Loan Agreement shall be amended by deleting the following Section
          2.2:

          "2.2 Overadvances. If, at any time or for any reason, the amount of
               ------------
          Obligations owed by Borrower to Bank pursuant to Section 2.1.l plus,
          prior to the Debt Service Coverage Event, Section 2.1.2, is greater
          than the Borrowing Base, Borrower shall immediately pay to Bank, in
          cash, the amount of such excess (the "Overadvance")."

          and substituting therefor the following:

          "2.2 Overadvances. If, at any time or for any reason, the amount of
               ------------
          (a) Obligations (as defined hereunder) owed by Borrower to Bank (not
          including the EXIM Loan), is greater than (b) the lesser of the
          Committed Revolving Line or the Borrowing Base, Borrower shall
          immediately pay to Bank, in cash, the amount of such excess. In
          addition, if, at any time or for any reason, the Obligations (as
          defined hereunder) and the obligations under the EXIM Loan, in the
          aggregate, exceed the amount of Twelve Million Five Hundred Thousand
          Dollars ($12,500,000.00). Borrower shall immediately pay to Bank, in
          cash, the amount of such excess. Any excess calculated pursuant to
          this Section shall be referred to as the "Overadvance""

                                      -11-
<PAGE>

                    Borrower shall immediately pay to Bank, in cash, the amount
                    of such excess. Any excess calculated pursuant to this
                    Section shall be referred to as the "Overadvance"

4.   EXIM LOAN. The occurrence of an Event of Default under the EXIM Loan shall
     ---------
constitute an Event of Default under the Loan Agreement. The occurrence of an
Event of Default under the Loan Agreement shall constitute an Event of Default
under the EXIM Loan.

5.   LOAN FEES. The Borrower shall pay to the Bank the following:
     ---------

               (a)  Committed Revolving Line Facility Fee. A Committed Revolving
                    -------------------------------------
                    Line Facility Fee equal to Eighteen Thousand Seven Hundred
                    Fifty Dollars ($18,750,00), which fee shall be due on the
                    date hereof and shall be fully earned and nonrefundable.

               (b)  Committed Equipment Line Facility Fee. A Committed Equipment
                    -------------------------------------
                    Line Facility Fee equal to: (i) Ten Thousand Dollars
                    ($10,000.00), which fee shall be due on the date hereof, and
                    shall be fully earned and non-refundable.

6.   CONSISTENT CHANGES. The Existing Loan Documents are hereby amended wherever
     ------------------
necessary to reflect the changes described above.

7.   RATIFICATION OF LOAN DOCUMENTS. Borrower hereby ratifies, confirms, and
     ------------------------------
reaffirms all terms and conditions of all security or other collateral granted
to the Lender, and confirms that the indebtedness secured thereby includes,
without limitation, the Indebtedness.

8.   NO DEFENSES OF BORROWER.  Borrower agrees that, as of this date, it has no
     -----------------------
defenses against the obligations to pay any amounts under the Indebtedness.

9.   CONTINUING VALIDITY.  Borrower understands and agrees that in modifying the
     -------------------
existing Indebtedness, Lender is relying upon Borrower's representations,
warranties, and agreements, as set forth in the Existing Loan Documents;
provided however that the Schedule to the Loan Agreement shall be amended and
restated as set forth on Exhibit C attached hereto. Except as expressly modified
pursuant to this Loan Modification Agreement, the terms of the Existing Loan
Documents remain unchanged and in full force and effect. Lender's agreement to
modifications to the existing Indebtedness pursuant to this Loan Modification
Agreement in no way shall obligate Lender to make any future modifications to
the Indebtedness. Nothing in this Loan Modification Agreement shall constitute a
satisfaction of the Indebtedness. It is the intention of Lender and Borrower to
retain as liable parties all makers and endorsers of Existing Loan Documents,
unless the party is expressly released by Lender in writing. No maker, endorser,
or guarantor will be released by virtue of this Loan Modification Agreement. The
terms of this Paragraph apply not only to this Loan Modification Agreement, but
also to all subsequent loan modification agreements.

10.  JURISDICTION/VENUE. Borrower accepts for itself and in connection with its
     ------------------
properties, unconditionally, the non-exclusive jurisdiction of any state or
federal court of competent jurisdiction in the Commonwealth of Massachusetts in
any action, suit, or proceeding of any kind against it which arises out of or by
reason of this Loan Modification Agreement; provided, however, that if for any
reason Lender cannot avail itself of the courts of the Commonwealth of
Massachusetts, then venue shall lie in Santa Clara County, California.

11.  COUNTERSIGNATURE.  This Loan Modification Agreement shall become effective
     ----------------
only when it shall have been executed by Borrower and Lender (provided, however,
in no event shall this Loan Modification Agreement become effective until signed
by an officer of Lender in California).

                                      -12-
<PAGE>

     This Loan Modification Agreement is executed as of the date first written
above.

BORROWER:                              LENDER:

SEACHANGE INTERNATIONAL, INC.          SILICON VALLEY BANK, doing business as
                                       SILICON VALLEY EAST

By: W L FIEDLER                        By:_________________________________
----------------------------

Name: W L FIEDLER                      Name:_______________________________
----------------------------

Title: Vice President                  Title:______________________________
----------------------------

                                       SILICON VALLEY BANK

                                       By:_________________________________

                                       Name:_______________________________

                                       Title:______________________________

                                      -13-
<PAGE>

                                  APPENDIX 1
                                  ----------
                         LIBOR SUPPLEMENT TO AGREEMENT

This LIBOR Supplement to Agreement (the "Supplement") is a supplement to the
Loan and Security Agreement (the "Loan Agreement") dated as of November 10,
1998, between Silicon Valley Bank ("Bank") and Seachange International, Inc.
("Borrower"), and forms a part of and is incorporated into the Loan Agreement.

     1.   Definitions.
          -----------

     "Business Day" means a day of the year (a) that is not a Saturday, Sunday
or other day on which banks in the State of California or the City of London are
authorized or required to close and (b) on which dealings are carried on in the
interbank market in which Bank customarily participates.

     "Interest Period" means for each LIBOR Rate Loan, a period of approximately
one, two or three months as the Borrower may elect, provided that the last day
                                                    --------
of an Interest Period for a LIBOR Rate Loan shall be determined in accordance
with the practices of the LIBOR interbank market as from time to time in effect,
provided, further, in all cases such period shall expire not later than the
--------  -------
applicable Maturity Date.

     "Interest Rate" shall mean as to: (a) Prime Rate Loans, a rate equal to the
Prime Rate; and (b) LIBOR Rate Loans, a rate of 2.0% per annum in excess of the
LIBOR Rate (based on the LIBOR Rate applicable for the Interest Period selected
by the Borrower).

     "LIBOR Base Rate" means, for any Interest Period for a LIBOR Rate Loan, the
rate of interest per annum determined by Bank to be the per annum rate of
interest as which deposits in United States Dollars are offered to Bank in the
London interbank market in which Bank customarily participates at 11:00 A.M.
(local time in such interbank market) two (2) Business Days before the first
day of such Interest Period for a period approximately equal to such Interest
Period and in an amount approximately equal to the amount of such Loan.

     "LIBOR Rate" shall mean, for any Interest Period for a LIBOR Rate Loan, a
rate per annum (rounded upwards, if necessary, to the nearest 1/16 of 1%) equal
to (i) the LIBOR Base Rate for such Interest Period divided by (ii) 1 minus the
Reserve Requirement for such Interest Period.

     "LIBOR Rate Loans" means any Loans made or a portion thereof on which
interest is payable based on the LIBOR Rate in accordance with the terms hereof.

     "Prime Rate" means the variable rate of interest per annum, most recently
announced by Bank as its "prime rate," whether or not such announced rate is the
lowest rate available from Bank. The interest rate applicable to the Prime Rate
Loans shall change on each date there is a change in the Prime Rate.

     "Prime Rate Loans" means any Loans made or a portion thereof on which
interest is payable based on the Prime Rate in accordance with the terms hereof.

     "Regulatory Change" means, with respect to Bank, any change on or after the
date of this Loan Agreement in United States federal, state or foreign laws or
regulations, including Regulation D, or the adoption or making on or after such
date of any interpretations, directives or requests applying to a class of
lenders including Bank of or under any United States federal or state, or any
foreign, laws or

                                     -14-
<PAGE>

regulations (whether or not having the force of law) by any court or
governmental or monetary authority charged with the interpretation or
administration thereof.

     "Reserve Requirement" means, for any Interest Period, the average maximum
rate at which reserves (including any marginal, supplemental or emergency
reserves) are required to be maintained during such Interest Period under
Regulation D against "Eurocurrency liabilities" (as such term is used in
Regulation D) by member banks of the Federal Reserve System. Without limiting
the effect of the foregoing, the Reserve Requirement shall reflect any other
reserves required to be maintained by Bank by reason of any Regulatory Change
against (I) any Category of liabilities which includes deposits by reference to
which the LIBOR Rate is to be determined as provided in the definition of "LIBOR
Base Rate" or (ii) any category of extensions of credit or other assets which
include Loans.

     2. Requests for Loans; Confirmation of Initial Loans. Each LIBOR Rate Loan
        -------------------------------------------------
shall be made upon the irrevocable written request of Borrower received by Bank
not later than 11:00 a.m. (Santa Clara, California time) on the Business Day
three (3) Business Days prior to the date such Loan is to be made. Each such
notice shall specify the date such Loan is to be made, which day shall be a
Business Day; the amount of such Loan, the Interest Period for such Loan, and
comply with such other requirements as Bank determines are reasonable or
desirable in connection therewith.

     Each written request for a LIBOR Rate Loan shall be in the form of a LIBOR
Rate Loan Borrowing Certificate as set forth on Exhibit A, which shall be duly
                                                ---------
executed by the Borrower.

     3. Conversion/Continuation of Loans.
        --------------------------------

     (a) Borrower may from time to time submit in writing a request that Prime
Rate Loans be converted to LIBOR Rate Loans or that any existing LIBOR Rate
Loans continue for an additional Interest Period. Such request shall specify the
amount of the Prime Rate Loans which will constitute LIBOR Rate Loans (subject
to the limits set forth below) and the Interest Period to be applicable to such
LIBOR Rate Loans. Each written request for a conversion to a LIBOR Rate Loan or
a continuation of a LIBOR Rate Loan shall be substantially in the form of a
LIBOR Rate Conversion/Continuation Certificate as set forth on Exhibit B, which
                                                               ---------
shall be duly executed by the Borrower. Subject to the terms and conditions
contained herein, three (3) Business Days after Bank's receipt of such a request
from Borrower, such Prime Rate Loans shall be converted to LIBOR Rate Loans or
such LIBOR Rate Loans shall continue, as the case may be provided that:

     (i)   no Event of Default or event which with notice or passage of time or
both would constitute an Event of Default exists;

     (ii)  no party hereto shall have sent any notice of termination of this
Supplement or of the Loan Agreement;

     (iii) Borrower shall have complied with such customary procedures as Bank
has established from time to time for Borrower's requests for LIBOR Rate Loans;

     (iv)  the amount of a LIBOR Rate Loan shall be $100,000 or such greater
amount which is an integral multiple of $50,000; and

     (v)   Bank shall have determined that the Interest Period or LIBOR Rate is
available to Bank which can be readily determined as of the date of the request
for such LIBOR Rate Loan.

                                      -15-
<PAGE>

     Any request by Borrower to convert Prime Rate Loans to LIBOR Rate Loans or
continue any existing LIBOR Rate Loans shall be irrevocable. Notwithstanding
anything to the contrary contained herein, Bank shall not be required to
purchase United States Dollar deposits in the London interbank market or other
applicable LIBOR Rate market to fund any LIBOR Rate Loans, but the provisions
hereof shall be deemed to apply as if Bank had purchased such deposits to fund
the LIBOR Rate Loans.

     (b)  Any LIBOR Rate Loans shall automatically convert to Prime Rate Loans
upon the last day of the applicable Interest Period, unless Bank has received
and approved a complete and proper request to continue such LIBOR Rate Loan
at least three (3) Business Days prior to such last day in accordance with the
terms hereof. Any LIBOR Rate Loans shall, at Bank's option, convert to Prime
Rate Loans in the event that (i) an Event of Default, or event which with the
notice or passage of time or both would constitute an Event of Default, shall
exist, (ii) this Supplement or the Loan Agreement shall terminate, or (iii) the
aggregate principal amount of the Prime Rate Loans which have previously been
converted to LIBOR Rate Loans, or the aggregate principal amount of existing
LIBOR Rate Loans continued, as the case may be, at the beginning of an Interest
Period shall at any time during such Interest Period exceeds the Revolving
Maturity Date. Borrower agrees to pay to Bank, upon demand by Bank (or Bank may,
at its option, charge Borrowers loan account) any amounts required to compensate
Bank for any loss (including loss of anticipated profits), cost or expense
incurred by such person, as a result of the conversion of LIBOR Rate Loans to
Prime Rate Loans pursuant to any of the foregoing.

     (c)  On all Loans, Interest shall be payable by Borrower to Bank monthly in
arrears not later than the first day of each calendar month at the applicable
Interest Rate.

     4.   Additional Requirements/Provisions Regarding LIBOR Rate Loan: Etc.
          ------------------------------------------------------------------

     (a)  If for any reason (including voluntary or mandatory prepayment or
acceleration), Bank receives all or part of the principal amount of a LIBOR Rate
Loan prior to the last day of the Interest Period for such Loan, Borrower shall
immediately notify Borrower's account officer at Bank and, on demand by Bank,
pay Bank the amount (if any) by which (i) the additional interest which would
have been payable on the amount so received had it not been received until the
last day of such Interest Period exceeds (ii) the interest which would have been
recoverable by Bank by placing the amount so received on deposit in the
certificate of deposit markets or the offshore currency interbank markets or
United States Treasury investment products, as the case may be, for a period
starting on the date on which it was so received and ending on the last day of
such Interest Period at the interest rate determined by Bank in its reasonable
discretion. Bank's determination as to such amount shall be conclusive absent
manifest error.

     (b)  Borrower shall pay to Bank, upon demand by Bank, from time to time
such amounts as Bank may determine to be necessary to compensate it for any
costs incurred by Bank that Bank determines are attributable to its making or
maintaining of any amount receivable by Bank hereunder in respect of any Loans
relating thereto (such increases in costs and reductions in amounts receivable
being herein called "Additional Costs"), in each case resulting from any
Regulatory Change which:

               (i)  changes the basis of taxation of any amounts payable to Bank
under this Supplement in respect of any Loans (other than changes which affect
taxes measured by or imposed on the overall net income of Bank by the
jurisdiction in which such Bank has its principal office); or

                                      -16-
<PAGE>

          (ii)  imposes or modifies any reserve, special deposit or similar
requirements relating to any extensions of credit or other assets of, or any
deposits with or other liabilities of Bank (including any Loans or any deposits
referred to in the definition of "LIBOR Base Rate"): or

         (iii)  imposes any other condition affecting this Supplement (or any of
such extensions of credit or liabilities).

Bank will notify Borrower of any event occurring after the date of the Loan
Agreement which will entitle Bank to compensation pursuant to this section as
promptly as practicable after it obtains knowledge thereof and determines to
request such compensation. Bank will furnish Borrower with a statement setting
forth the basis and amount of each request by Bank for compensation under this
Section 4. Determinations and allocations by Bank for purposes of this Section 4
of the effect of any Regulatory Change on its costs of maintaining its
obligations to make Loans or of making or maintaining Loans or on amounts
receivable by it in respect of Loans, and of the additional amounts required to
compensate Bank in respect of any Additional Costs, shall be conclusive absent
manifest error.

     (c)  Borrower shall pay to Bank, upon the request of Bank, such amount or
amounts as shall be sufficient (in the sole good faith opinion of such Bank) to
compensate it for any loss, costs or expense incurred by it as a result of any
failure by Borrower to borrow a Loan on the date for such borrowing specified in
the relevant notice of borrowing hereunder.

    (d)   If Bank shall determine that the adoption or implementation of any
applicable law, rule, regulation or treaty regarding capital adequacy, or any
change therein, or any change in the interpretation or administration thereof by
any governmental authority, central bank or comparable agency charged with the
Interpretation or administration thereof, or compliance by Bank (or its
applicable lending office) with any respect or directive regarding capital
adequacy (whether or not having the force of law) of any such authority, central
bank or comparable agency, has or would, have the effect of reducing the rate of
return on capital of Bank or any person or entity controlling Bank (a "Parent")
as a consequence of its obligations hereunder to a level below that which Bank
(or its Parent) could have achieved but for such adoption, change or compliance
(taking into consideration its policies with respect to capital adequacy) by an
amount deemed by Bank to be material, then from time to time, within 15 days
after demand by Bank, Borrower shall pay to Bank such additional amount or
amounts as will compensate Bank for such reduction. A statement of Bank claiming
compensation under this Section and setting forth the additional amount or
amounts to be paid to it hereunder shall be conclusive absent manifest error.

     (e)  If at any time Bank, in its sole and absolute discretion, determines
that: (i) the amount of the LIBOR Rate Loans for periods equal to the
corresponding Interest Periods are not available to Bank in the offshore
currency interbank markets, or (ii) the LIBOR Rate does not accurately reflect
the cost to Bank of lending the LIBOR Rate Loan, then Bank shall promptly give
notice thereof to Borrower, and upon the giving of such notice Bank's obligation
to make the LIBOR Rate Loans shall terminate, unless Bank and the Borrower agree
in writing to a different interest rate Loans shall terminate, unless Bank and
the Borrower agree in writing to a different interest rate applicable to LIBOR
Rate Loans. If it shall become unlawful for Bank to continue to fund or maintain
any Loans, or to perform its obligations hereunder, upon demand by Bank,
Borrower shall prepay the Loans in full with accrued interest thereon and all
other amounts payable by Borrower hereunder (including, without limitation, any
amount payable In connection with such prepayment pursuant to Section 4(a)).

                                      -17-

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