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View Full Version : De-muxing to raw Mpeg4 (and other) streams using MP4Box.exe


SeeMoreDigital
13th May 2005, 13:18
The de-muxing feature works really well now :)

May I ask whether it would be possible to include an option to de-mux Mpeg4/SP/ASP streams to .mp4v (or even .avi)? As it does not appear to be possible to play .cmp streams in any media player (or DSdec filters). It also does not seem to be possible to mux .cmp streams into the .avi container.

http://img158.echo.cx/img158/1728/yambdemuxing0nu.gif

Thankfully, when Mpeg4/AVC streams are de-muxed to .h264, they play great using Nero's ShowTime player/filters.


Cheers

SeeMoreDigital
13th May 2005, 14:44
Originally posted by planet1
.btw whats .mp4v ? (ordinary .mp4 with just a video stream :confused: ))From what I understand it's considered as being an elementary stream... the same as .M4V!

If you have a look at XviD's DSdec filter you'll see there's an option to play back such streams: -

http://img192.echo.cx/img192/6382/xviddsdec1xl.gif


Cheers

planet1
13th May 2005, 15:15
afaik XviD's "mp4v" is just a FourCC value - useful when you use ASP in MP4 with e.g. Haali's splitter
(ffdshow has that too)

cya

:cool:

bond
13th May 2005, 17:19
about "mp4v"

as someone wrote the "mp4v" listed in the xvid decoder filter refers indeed to the fourcc (most .mp4 dshow splitters, 3ivx, haali.. signal mpeg-4 asp content as "mp4v")

regarding .mp4v files, these dont really exist :D
normally two extensions are used for raw mpeg-4 asp content: .cmp and .m4v, which of course are exactly the same

SeeMoreDigital
17th May 2005, 20:29
Here's an unexpected observation....

MP4Box.exe can de-mux AC3 and DTS audio streams from out of the .AVI container!


Cheers

bond
18th May 2005, 19:48
i assume it simply dumps all the samples from an avi file without really checking the content, like avi2raw from mpeg4ip does it