[Matroska-devel] Re: Status Quo of new features
steve.lhomme at free.fr
Mon Dec 27 12:23:34 CET 2004
Paul Bryson a écrit :
> "Steve Lhomme" wrote...
>>>- DV ( camcorder, lossy compression ) support, type 1 ( a +v = 1 stream )
>>>and 2 ( a , a+v : 2 streams ); mainly some AVI parsing and defining how
>>>to handle the embedded audio stream ( AVI has to repeat the PCM WAV audio
>>>stream --> ENORMOUS overhead )
>>As I've worked on MTX a bit, I think I could be able to add DV support
>>too. Actually we would store the audio and video in separate tracks, not
>>using the complex type, since the DV format is known we can demux it.
> DV is strange because if you encode only video to DV, it still uses the same
> space for the PCM, but it marks it as no audio. It would be possible to
> store just the video frame data, but the splitter would need to recreate
> Video + Null Audio stream on playback for anything to be able to use it. If
> I recall correctly, it basically uses something like JPEG images for the
> video, very similar to MJPEG video. I know we all have visions of using DV
> video with Wavpack audio without having to store all of that silly PCM
As long as all data needed to reconstruct the video is present in
Matroska, that's fine.
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