HDTenEightyP/NetNews huggingface dataset:
From: cgra@btma74.nohost.nodomain
Newsgroups: comp.multimedia
Subject: Re: TV Resolution
Date: 14 Dec 92 17:32:29 GMT
Reply-To: cgra@btma74.nohost.nodomain ()


In article <1992Dec14.092349.11705@prl.philips.nl>, martens@prl.philips.nl (martens p) writes:
|>
|>In article <8326@charon.cwi.nl> guido@cwi.nl (Guido van Rossum) writes:
|>>ldo@waikato.ac.nz (Lawrence D'Oliveiro, Waikato University) writes:
|>>
|>>>Software wise, I'm less certain what the situation is. I think a great mass
|>>>of algorithms have been developed that work in RGB space, and a more compact,
|>>>non-RGB encoding would require more complicated and lengthy computations in
|>>>many cases, which wouldn't be worth the saving in memory.
|>>
|>>I presume one of the advantages of RGB for software is that it's
|>>additive: if you have two images that you want to mix, and you have
|>>the pixels as R,G,B color components, mixing becomes trivial (just
|>>average the components).  Many shading algorithms also use this
|>>additive property extensively.  I don't think this is as easy for YUV.
|>
|>
|>As far as I know, you don't even need a math processor to convert YUV <-> RGB:
|>
|>Y = 0.3 R + 0.59 G + 0.11 B
|>U = 0.49 (B - Y)
|>V = 0.88 (R - Y)
|>
|>
|>>
|>>--Guido van Rossum, CWI, Amsterdam <guido@cwi.nl>
|>>"Appelmoes zoals appelmoes bedoeld is!"
|>>
|>Ontaarde amsterdammer :-)
|>
|>
|>
|>
|>Peter Martens
|>
So YUV is also additive, like anything else which goes
     [ a11  a12  a13 ]  [R]     [foo]
     [ a21  a22  a23 ]  [G]  =  [bar]
     [ a31  a32  a33 ]  [B]     [baz]
                             - right?
Then if we choose our matrix coefficients such that the inverse matrix is
dead easy to compute (all 1s, .5s, .25s and 0s), and encode the data as
foo bar foo baz foo bar foo baz ... where foo is the "luminance" component
and is calculated for every pixel, and bar and baz are "chrominance" components
calculated per 2 pixels (i.e. chrominance bandwidth half the luminance), all 8
bits wide, then we save on memory-processor bandwidth (2 pixels per 32-bit 
fetch, or 1 per 16-bit fetch), and size of course, for very little extra
computation. I am thinking not so much of backing store here as of RAM - e.g.
your DSP is unpacking video frames from disc into RAM and the CPU (or something
else) is driving the screen.

Time to go home.

Chris              cgra@se.alcbel.be             ontaarede Yorkshireman :-/
Newsgroups: comp.multimedia
From: rosser@sfu.ca (Blair Allan Rosser)
Subject: Re: QuickTime for Windows
Followup-To: comp.multimedia
Organization: Excite Centre, Simon Fraser University
Date: Sat, 12 Dec 1992 08:31:36 GMT

In article <1992Dec10.173608.12713@waikato.ac.nz>, ldo@waikato.ac.nz
(Lawrence D'Oliveiro, Waikato University) wrote:

> Mac QuickTime 1.5 includes special-case optimizations for 50% and 200%
> scale factors (at least with the Apple Video compressor). Did you try these?
> Other scale factors are pretty bad on a Mac as well.

Half- and double-size scaling is implemented.

The player for Quicktime under Windows is *EXACTLY* like the QT 1.0 version
for the the Mac. You get a sound control that has a pop-up slider. a
play/pause button, a slide-rule type slider, step forward/back buttons, and
a resize button. Clicking inside the player window pauses playback.
Dubl-click to continue. 

Reading through the API overview for QTW last night I remember coming
across a passage claiming something like if you're familiar with
programming QT for the Mac, than you'll be right at home with QTW.
Functionality is very closely matched.

Now performance, that's a whole 'nuther critter I'd just asoon keep jawside
outsidah.

cheers,
b.


-----------------
Blair Rosser, rosser@sfu.ca
Excite Centre, Faculty of Ed., Simon Fraser University
Burnaby, B.C., Canada
From: rhyde@picard.ucr.edu (randy hyde)
Newsgroups: comp.multimedia
Subject: Re: Video for Windows?
Date: 12 Dec 92 23:52:00 GMT
Organization: University of California, Riverside

It's easy to get 10 fps playback from MPEG *if you have the right source
material*.  It's also hard to get beyond 3-4 fps if you have bad source
material.  I've just about completed 100 hours of measurements on Apple's
compact video format and I can tell you that the source material makes
a *big* difference in compression ratios, data transfer rates, data
decompression, etc.  A stable background with only a little movement
works much better with these codecs than, say, panning or zooming the
camera.  Of course, MPEG won't be of too much use to most of us until
the hardware codecs come along.

Newsgroups: alt.cdrom,comp.multimedia,comp.graphics
From: thail@seas.gwu.edu (Samuel R. Posten)
Subject: photo cd
Organization: George Washington University
Date: Thu, 17 Dec 1992 18:41:09 GMT

for everbody looking for a photo cd editor for the pc, I just got
micrographix picture publisher, which has photo cd support built in.  I
also have the photo cd drivers for my sound blaster drive, now I just need
some disks!!!

BTW it's a windows product, about $250 at egghead.  I'm going to check
switek for some images.   tell y'all tomorrow how it looks.
sam
From: ldo@waikato.ac.nz (Lawrence D'Oliveiro, Waikato University)
Newsgroups: comp.multimedia
Subject: Re: Convert Quicktime -> VfW?
Date: 17 Dec 92 16:38:06 +1300
Distribution: usa
Organization: University of Waikato, Hamilton, New Zealand

In article <1992Dec16.135136.16878@cbnewsh.cb.att.com>, rkl@cbnewsh.cb.att.com (kevin.laux) writes:
>
> 	If you purchased a copy of Video for Windows, you would have both
> the AVI clips (over 200 on the CD-ROM), as well as the Quicktime to VfW
> converter.

Interesting. Do you know which compression formats this converter will handle?
Will it take the Compact Video compression in QuickTime 1.5?

Lawrence D'Oliveiro                       fone: +64-7-856-2889
Computer Services Dept                     fax: +64-7-838-4066
University of Waikato            electric mail: ldo@waikato.ac.nz
Hamilton, New Zealand    37^ 47' 26" S, 175^ 19' 7" E, GMT+13:00
Newsgroups: comp.multimedia
From: martens@prl.philips.nl (martens p)
Subject: Re: TV Resolution
Organization: Philips Research Laboratories, Eindhoven, The Netherlands
Date: Mon, 14 Dec 1992 09:23:49 GMT

In article <8326@charon.cwi.nl> guido@cwi.nl (Guido van Rossum) writes:
>ldo@waikato.ac.nz (Lawrence D'Oliveiro, Waikato University) writes:
>
>>Software wise, I'm less certain what the situation is. I think a great mass
>>of algorithms have been developed that work in RGB space, and a more compact,
>>non-RGB encoding would require more complicated and lengthy computations in
>>many cases, which wouldn't be worth the saving in memory.
>
>I presume one of the advantages of RGB for software is that it's
>additive: if you have two images that you want to mix, and you have
>the pixels as R,G,B color components, mixing becomes trivial (just
>average the components).  Many shading algorithms also use this
>additive property extensively.  I don't think this is as easy for YUV.


As far as I know, you don't even need a math processor to convert YUV <-> RGB:

Y = 0.3 R + 0.59 G + 0.11 B
U = 0.49 (B - Y)
V = 0.88 (R - Y)


>
>--Guido van Rossum, CWI, Amsterdam <guido@cwi.nl>
>"Appelmoes zoals appelmoes bedoeld is!"
>
Ontaarde amsterdammer :-)




Peter Martens
From: andrew@minster.york.ac.uk
Newsgroups: comp.multimedia
Subject: Sony Electronic Book
Date: 15 Dec 92 11:02:58 GMT
Organization: Department of Computer Science, University of York, England

I've just seen this sony electronic book which is now on sale here in
England.  I think they are trying to push it through some large retail
stores.  However, it seems quite limited in the multimedia sense.  Basically
it is just a text information retrieval system.  I suppose it cuts down on
the number of manuals, directories, reference books you have around the 
place but I would have thought integrated speech or music output would have
been available.

Does anyone have any opinions about this machine or what sony hope to
release next in this line of 'gadgets'.

--
---------------

 Andrew Hague - Researching Computer Aided Learning & On-Line Lectures.
 Department of Computer Science.  University of York, YORK. Y01 5DD
 Tel: (+44/0)904 432762		 E-MAIL: andrew@minster.york.ac.uk 
Newsgroups: comp.multimedia
From: matts@microsoft.com (Matt Saettler)
Subject: Re: QuickTime for Windows
Date: 14 Dec 92 19:14:03 GMT
Organization: Microsoft Corporation

In article <rosser-111292235101@nkishor.educ.sfu.ca> rosser@sfu.ca (Blair Allan Rosser) writes:
<stuff deleted>
>> 
>> Also, QTW does *not* support recording at this point... hell, they haven't 
>> even given us an MCI command set (a real bummer for those of us trying to use
>> the thing in MM Authoring packages... looks like i get to learn how to compile
>> in MS C/C++ 7 this month, eh? :>)
>
>What you really notice when running QTW, is the different window sizes.
>You're not restricted to a window size of 160x120 as in V4W. At this point,
>you get a QT Windows player (like XING's MPEG player) and a few nifty
>utilities like a fli/flc-to-movie converter, but QTW is being distributed
>with an API, so what you don't like....
>

Video for Windows is NOT limited to 160x120 as you say.

--------------------------------------------
I speak only for myself...
From: ldo@waikato.ac.nz (Lawrence D'Oliveiro, Waikato University)
Newsgroups: comp.multimedia
Subject: Re: TV Resolution
Date: 16 Dec 92 13:58:18 +1300
Organization: University of Waikato, Hamilton, New Zealand

In article <1370@se.alcbel.be>, cgra@btma74.nohost.nodomain writes:
>
> In article <1992Dec14.092349.11705@prl.philips.nl>, martens@prl.philips.nl (martens p) writes:
> |>>
> |>>I presume one of the advantages of RGB for software is that it's
> |>>additive: if you have two images that you want to mix, and you have
> |>>the pixels as R,G,B color components, mixing becomes trivial (just
> |>>average the components).  Many shading algorithms also use this
> |>>additive property extensively.  I don't think this is as easy for YUV.
> |>
> |>
> |>As far as I know, you don't even need a math processor to convert YUV <-> RGB:
> |>
> |>Y = 0.3 R + 0.59 G + 0.11 B
> |>U = 0.49 (B - Y)
> |>V = 0.88 (R - Y)
> |>
> So YUV is also additive, like anything else which goes
>      [ a11  a12  a13 ]  [R]     [foo]
>      [ a21  a22  a23 ]  [G]  =  [bar]
>      [ a31  a32  a33 ]  [B]     [baz]
>                              - right?

If you put it that way, *everything* is additive. :-)

Perhaps what Peter should have said is that "addition of RGB components has
a well-defined meaning". That is, its visual effect can be understood in
terms of what happens when you shine different coloured lights on the same
background.

Addition of YUV values doesn't make so much sense. Addition of Y components
is OK, but those negative coefficients in the formulas for U and V can cause
some strange effects.

Lawrence D'Oliveiro                       fone: +64-7-856-2889
Computer Services Dept                     fax: +64-7-838-4066
University of Waikato            electric mail: ldo@waikato.ac.nz
Hamilton, New Zealand    37^ 47' 26" S, 175^ 19' 7" E, GMT+13:00
Newsgroups: comp.multimedia
From: sn@plato.chemietechnik.uni-dortmund.de (sn)
Newsgroups: comp.multimedia
Subject: Re: Question about Creative Labs Multimedia Kit
Date: 14 Dec 92 16:30:51 GMT

seanp@sdf.lonestar.org (Sean Peoples) writes:

>In article <ByqzIJ.L4M@rahul.net> jonathan@rahul.net (Jonathan Heiliger) writes:
>>   I believe that the Multimedia Upgrade Kit includes the SoundBlaster/PRO 
>>which is a 16bit card.  Or I know a friend that purchased that kit w/the 
>>CDROM drive and it came with a SBPRO.

>The SBPro is an 8-bit card.  The SBPro 16 is a whole seperate animal, it's 
>very rare that you even find one at this point in time...But I feel it's 
>more than likely that you'll see an MPC kit from CL with the SBPro 16 in
>it soon enough.

The SBPRo is a 16-bit card - it produces 8 bit sound tho (get it?)

L8er,

Sven
Newsgroups: comp.multimedia
From: seanp@sdf.lonestar.org (Sean Peoples)
Subject: Re: TV Resolution
Organization: Best lil' ol' Pubnix in Texas
Date: Fri, 11 Dec 1992 22:21:59 GMT

In article <1992Dec8.062813.27446@berlioz.nsc.com> mvs@berlioz.nsc.com (Mike van Scherrenburg) writes:
>Just out of curiosity, is there a model for what quality NTSC or PAL
>TVs have, for example, perhaps in bits of resolution and perhaps some
>model post filter?
>  I've never seen something like this, but I suppose it would be
>useful for comparisons to computer displays.

I know that NTSC resolution is ~400 by 625 pixels interlaced...Other than that,
it's a purely analog medium, which makes color resolution arbitrary...The 
refresh rate is 60Hz, but since it's interlaced, that means a new image every
1/30 of a second...I could probably get specifics for you...

Later...
 
-- 
 ___       Sean Peoples <seanp@sdf.lonestar.org>, FidoNet : 1:124/7026 
|__  ___   The .\ssylum BBS: 214-291-8771 Cedar Hill, Tx USA!!!
___| |__|
     |     ... "Where are we going, and why am I in this handbasket?!?!"
Newsgroups: comp.multimedia
From: dimento@opal.cs.tu-berlin.de (Christian Moskal)
Subject: V4W, MS-SS
Organization: Techn. University of Berlin, Germany
Date: Sun, 13 Dec 1992 14:55:43 GMT

Hallo,

I wondered if the 'MS Sound System' and 'MS Video for Windows' were available
in the states yet. In Germany they won't be released until early next year
but since I am eager to get my hands on them, could anyone be so kind to pro-
vide me with vendors' addresses who have both in stock? The designated vendor
should accept credit cards and international orders. I would also need their
fax# as well as their 800# if available :)

BTW, has anyone made any experiences with either product yet? I would be par-
ticularly interested in suitable hard/software combinations for V4W.

Please reply by email. I will post a summary if request is sufficient.

Thanks much in advance,
-- Chris

--
Christian Moskal, PIS Inc., Tel# ++49 (0)30-451-4488, Fax# ++49 (0)30-451-4692,
#*-->       Internet: dimento@opal.cs.tu-berlin.de, CIS: 111111,111       <--*#
'Es gibt keinen Weg zum Frieden, denn Frieden ist der Weg.'; Mohandas K. Gandhi
From: stan.king@filebank.cts.com (Stan King)
Newsgroups: comp.multimedia
Subject: Anyone have MPC specs? Is
Date: 11 Dec 92 16:28:00 GMT
Reply-To: stan.king@filebank.cts.com (Stan King)
Organization: The File Bank BBS - Fallbrook, CA  619-728-4318

SLS>SCSI one.  I figure I'll let all the manufacturers figure out XA, Dual
SLS>Speeds, Multi Session Photo CD, etc before I spluge for one of those.
SLS>Right now, they are commanding top dollar.  In the meantime, the $199 one
SLS>should do for what I need.  So, its slow (800ms), I'm patient :-)

 What you should be concerned about is: A cd-rom drive has to transfer
150kb/sec to be truely MPC compatible.  Otherwise all the videos and
sounds will be *real* jerky....

SLS>If anyone has impressions about the DAK $199 CD-ROM, I'd appreciate
SLS>hearing about it, good or bad.

  I have basically the same one in my computer (made for a Tandy) and I
wouldn't waste my money on it.  If they hadn't given it to me for free
at work......

---
 . SLMR 2.1a . Just another dumb tagline.
From: bce@sactoh0.sac.ca.us (Byron C. Ellis)
Newsgroups: comp.multimedia
Subject: New Creative Labs Drivers
Keywords: CD-ROMS drivers
Date: 14 Dec 92 04:10:03 GMT
Organization: Sacramento Public Access Unix

I purchased the Multimedia Upgrade kit earlier this year in April, and I
was wondering there were any new CD-ROM drivers or a MSCDEX.EXE avalible
from Creative Labs, I had heard that there were new drivers that fixed
some of the old drivers, and that there was a new MSCDEX that worked with
DOS 5.0, without having to resort to SETVER, any information about what
the drivers are, where to get them, etc, would be much appreciated...
      Thanks.
-- 
Flying (v) : The art or knack of throwing : Byron C. Ellis
yourself at the ground and missing        : Internet: bce@sactoh0.SAC.CA.US
-The more than complete Hitchikers Guide  :
 to the Galaxy trilogy                    :
From: teoallan@hpsgm2.sgp.hp.com (Allan TEO)
Date: Tue, 15 Dec 1992 05:18:44 GMT
Subject: CD-I emulator for IBM PCs
Organization: HP Singapore Notes-Server
Newsgroups: comp.multimedia

Hi,
 I understand that some company in the US, (Trantor) is developing
 an emulator for Philips CD-I so that you can use most existing cdroms,
 plug in a CDI disk and run the program on your PC..

 Min config is a 486:50mhz DX machine

 Any comments... sounds intresting..

 Regds
 Allan

Newsgroups: comp.multimedia
From: ncc@cmutual.com.au (Neal Collins)
Subject: Re: Sony Electronic Book
Organization: Colonial Mutual Group 
Date: Fri, 18 Dec 1992 04:10:49 GMT

andrew@minster.york.ac.uk writes:
> I've just seen this sony electronic book which is now on sale here in
> England.
[stuff deleted] 
> Does anyone have any opinions about this machine or what sony hope to
> release next in this line of 'gadgets'.

I just finished reading a scathing review in "New Scientist" - seems
like a good idea with a lousy implementation (screen hard to read
and clumsy search software). According to the same article Sony are
to release a version with "sound" capabilities.

Neal Collins				Email: ncollins@cmutual.com.au
Colonial mutual 			Phone: +613 6418483
Information Services			Compuserve: 100035,677
Newsgroups: comp.multimedia
Newsgroups: comp.multimedia,comp.music
Subject: MIDI keyboard for facial animation
From: kalra@uni2a.unige.ch
Date: 15 Dec 92 18:33:57 +0200
Organization: University of Geneva, Switzerland

 I need some information for MIDI-keyboard as an input device. There was an
article about using MIDI-keyboard to drive facial animation by SONY; if any
one knows exact reference, please let me know. Or used in different context..

Thanks for your attention and help.

-Prem Kalra
(email : kalra@uni2a.unige.ch)
MIRALab, CUI
Univ of Geneva,
Switzerland

Newsgroups: comp.multimedia
From: nwickham@nyx.cs.du.edu (Neal Wickham)
Subject: Re: Editing Movies
X-Disclaimer: Nyx is a public access Unix system run by the University
	of Denver for the Denver community.  The University has neither
	control over nor responsibility for the opinions of users.
Reply-To: nwickham@nyx.UUCP (Neal Wickham)
Organization: Nyx, Public Access Unix at U. of Denver Math/CS dept.
Date: Sat, 12 Dec 92 21:36:16 GMT

In article <310.312.uupcb@filebank.cts.com> stan.king@filebank.cts.com (Stan King) writes:
>DC>        Is there any public/private software available to edit VHS/8mm Movies
>DC>That is you read your movie into the computer, edit, add sound, and then
>DC>write back out to a VHS/8mm format.
>
>  If you find it, let me know also.....

There are some inexpesive editors for the Amiga, but you need some hardware
such as a genlock (as low as $100 I think) and maybe some other things.

You need hardware to do video.


                                   NCW


Newsgroups: comp.multimedia
From: rkl@cbnewsh.cb.att.com (kevin.laux)
Subject: Re: Convert Quicktime -> VfW?
Organization: AT&T
Distribution: usa
Date: Wed, 16 Dec 1992 13:51:36 GMT

In article <BzBFD0.400@inews.Intel.COM>, rkeel@fnugget.intel.com (William R Keel) writes:
> OK...there is supposed to be a Quicktime to Video for Windows 
> conversion program.  I would love to get my hands on it but 
> I have no information - only that it exists.  If there is any
> info, please post.
> The main reason I am asking is 'cause I need some video clips
> and don't know where to get any .AVI files.  So if you know
> of any that I can FTP, please post also!

	If you purchased a copy of Video for Windows, you would have both
the AVI clips (over 200 on the CD-ROM), as well as the Quicktime to VfW
converter.

-- 
________________________________________________________________________________
	R. Kevin Laux				Email: rkl1@hound.att.com
	AT&T Bell Labs				Voice: (908) 949-1160
	Holmdel, NJ 07733			Fax:   (908) 949-0959
From: mcgraw@titan.ppd.kodak.com (Edward McGraw)
Newsgroups: comp.multimedia
Subject: Seek advice on audio noise removal
Date: 14 Dec 92 17:18:07 GMT
Organization: Eastman Kodak Company

I'm trying to remove noise from some recordings and two
similar PC programs caught my eye, however I don't think
the resolution is high enough with either of them to get
at the broadband or click/pop noise frequencies. 

Sound Impresson: waveform editor feature
Animotion: edit sample dialog box screen

Any recomendation on the use of the two programs mentioned
or other higher resolution programs, would be appreciated.
I would be grateful for any advice on the subject.

Ted McGraw  mcgraw@titan.ppd.kodak.com 
Thanks in advance.
From: root@shawn.uucp (Mark Jeghers -- UNIX/X/Motif Contractor)
Newsgroups: comp.multimedia
Subject: Which MPC Encyclopedia is better, Compton or Grolier?
Date: 20 Dec 92 22:41:17 GMT
Reply-To: root@shawn.uucp (Mark Jeghers -- UNIX/X/Motif Contractor)
Distribution: usa
Organization: Mark Jeghers -- UNIX/X/Motif Contractor

The title says it all.  Any opinions on either or both?  What are
strengths/weakenesses?  Any special requirements to use them?
Comparative pros/cons?  Thanks in advance, and I'll summarize
given enough feedback.

Mark Jeghers
408/281-4823 [voicemail]
Newsgroups: comp.multimedia
From: schrod@omega.kcr.uky.edu (Mark A. Schneider)
Subject: portable selections/help
Organization: Kentucky Cancer Registry, Univ. of Ky
Date: Fri, 18 Dec 1992 12:42:53 GMT
Distribution: usa

I need to select a portable computer that is capable of handling the
larger cards found with Multi-media (i.e. ATVista).  This type of computer
is boxy and is sometimes referred to as a lunchbox.  486-50 with 3 open
16-bit slots, color monitor, etc.  Please give me suggestions as to which
brand names of "lunch boxes" to check out/avoid.  I know Compaq has a line
but that has only two open 16-bit and I believe 1 8-bit.  There are several
clones out there but I wouldn't know which to go with.  Thank you.

Mark

Newsgroups: comp.multimedia
From: giridhar@popeye.genie.uottawa.ca (Giridhar Iyengar)
Subject: Packet video info
Originator: giridhar@shamin.genie.uottawa.ca
Keywords: Multimedia, MPEG, ATM, B-ISDN
Organization: MCRLab - University of Ottawa
Distribution: na
Date: Fri, 18 Dec 92 03:05:11 GMT


Hi Everybody:
I am looking for info on packet video. I am quite unfamiliar with the topic. So
any basic info will be appreciated. 
I heard that IEEE CSVT is coming up with a special issue. Any pointers ?
Thanks. Please email to 
giridhar@popeye.genie.uottawa.ca 
or
iyengar@aix1.uottawa.ca
-giri

Newsgroups: comp.multimedia