Newsgroup: it.media.video.produzione
Titolo: RT2000 real time??????????



Direttamente dal sito della matrox


Ho sottolineato in rosso i punti dove dice apertamente che non è
in Real Time


http://www.matrox.com/videoweb/enduser/background/dv_rt2000.htm


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Realtime DV and MPEG-2 Editing on Matrox RT2000

 

  The Matrox RT2000 is a nonlinear editing solution that lets you
work with two video

  streams and a 32-bit, uncompressed, animated graphics layer
in real time.

  Realtime Capture

  RT2000 captures native DV material in real time over the built-in
1394 interface.

  Analog video from composite or Y/C sources can also be digitized
in realtime into

  either a DV or an MPEG-2 stream.

  Realtime Editing

  During the editing process, you work with two video layers and
a graphics layer. You

  can apply organic and 3D transitions, 2D and 3D DVE, and transparency
effects in real

  time — NO RENDERING. You see all your edits and changes instantly
on your PAL or

  NTSC monitor, at full online quality, without waiting for previews
to render.

  Realtime Analog Output

  You can record your program to analog tape in realtime over
the composite or Y/C

  output.

  Digital Output

  There are three modes of operation for digital output from RT2000:

    •

       You can stream your program from
the Adobe Premiere timeline directly to DV

       tape via 1394 without the need
to print your complete project to an AVI file.

    •

       You can record your project on
disk as a DV AVI file for archiving or as an interim

       step in the production process.

    •

       You can record your project on
disk as an MPEG-2 AVI file for DVD authoring

       and distribution.

 

  Direct DV output to tape via 1394

  RT2000 can output to DV tape, directly from the Adobe Premiere
timeline,
 
in realtime


  in certain cases and in near realtime
in other cases.


  Once the editing process has been completed and you want to print
your final project to

  DV tape, you select the print-to-tape function from a pull down
menu in Premiere.

  Matrox software then analyzes the timeline. A cuts-only project,
without effects, plays out

  in real time. If the timeline includes effects, the software
compiles just the effects

  sections and creates files of the effects sections that are
transparent to the user. Once

  these effects files are created, the software will play out
the entire project, in DV format,

  in real time. 
The time involved in
creating the effects files depends upon the complexity


  of the timeline and the speed of the
host CPU. Effects sections are rendered at


  approximately two to three times realtime
on currently available computers. 
The overall

  time involved in printing to DV tape is the time it takes to
create the compiled effects

  segments plus the time it takes to play out the timeline.

  In a typical storyboard, a significant portion is likely to be
straight playback of a single

  video stream. 
For example, a 10-minute
timeline which consists of eight minutes of


  cuts-only video segments plus two minutes
of video with effects can be output in 14


  minutes (1.4 times realtime). The effects
segments compile in 4 minutes (2 x 2


  minutes), then the entire timeline
plays out in 10 minutes, for a total of 14 minutes.


 
 In the worst case, if the entire timeline
is full of effects throughout, the process would


  take approximately three times realtime.
A ten minute timeline takes 20 minutes for


  effects compilation and 10 minutes
to play out to tape, for a total of 30 minutes.


  Printing to a DV AVI file

  RT2000 creates an AVI file from a DV project as follows:

  Segments of pure video (no effects) are copied into an AVI file
faster than realtime. The

  speed of this process is bounded by the data throughput of the
media hard disk.

  Effects segments are compiled at two to three times realtime
and added to the AVI file.

  The combination of faster than realtime copying of video segments
and accelerated

  compilation of effects segments results in print-to-AVI file
performance that ranges from

  faster-than-realtime where the timeline contains mainly cuts,
to two-to-three-times

  realtime where the timeline is full of effects throughout.

  Printing to a MPEG-2 AVI file

  RT2000 creates an MPEG-2 AVI file (with an IBP GOP structure
as required for DVD

  authoring and distribution application) from MPEG-2 I-frame
or DV projects in two to

  three times realtime regardless of the number of effects they
contain.

  Summary

  The first release of software for Matrox RT2000 will deliver
the editing and output

  performance described above. Powerful realtime editing features
and

  broadcast-quality 3D effects combined with realtime, 
or
near-realtime,
 output

  capabilities make RT2000, by far, the leader in its class.

  Finally, Matrox does not plan to sit idle after the first release
of this product. We are

  currently evaluating ways to improve output speed in subsequent
software releases.


 wrote in 
  message 
38203226...@tin.it
...
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http://www.matrox.com/videoweb/enduser/background/dv_rt2000.htm


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Scusa l'intoduzione ma la scheda è in real time...
  
Questa scheda lavora in realtime sui due canali video V1-V2, su 
un
 
  canale di effetti (percorso di spostamento...), sui titoli e sui canali audio. 
  Se tu avessi la necessità di dover sovrapporre due effetti particolari tipo 3D 
  nella stessa posizione temporale dello stesso progetto in Premiere, dovrai 
  pazientare un pochino perche anche in questo caso andrai incontro al 
  rendering... Attenzione però, qui non stiamo parlando di rendering software, 
  bensì di rendering hardware: la velocità hardware non teme confronti con 
  quella software che è molto più lenta, inoltre, pensa, mentre il processore 
  del tuo PC farà il rendering di un titolo, ad esempio, tu potrai proseguire 
  tranquillamente il tuo lavoro di editing con Premiere in quanto avrai a 
  disposizione un processore dedicato solo al video, sulla scheda RT2000...
  
ciao