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Old 13th May 2005, 13:18   #1  |  Link
SeeMoreDigital
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De-muxing to raw Mpeg4 (and other) streams using MP4Box.exe

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.



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


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Last edited by SeeMoreDigital; 17th May 2005 at 20:30.
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Old 13th May 2005, 14:44   #2  |  Link
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Quote:
Originally posted by planet1
.btw whats .mp4v ? (ordinary .mp4 with just a video stream ))
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: -




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Last edited by bond; 16th May 2005 at 13:14.
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Old 13th May 2005, 15:15   #3  |  Link
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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


Last edited by bond; 16th May 2005 at 13:13.
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Old 13th May 2005, 17:19   #4  |  Link
bond
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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
normally two extensions are used for raw mpeg-4 asp content: .cmp and .m4v, which of course are exactly the same
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MPEG-4 ASP FAQ | AVC/H.264 FAQ | AAC FAQ | MP4 FAQ | MP4Menu stores DVD Menus in MP4 (guide)
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Last edited by bond; 16th May 2005 at 13:13.
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Old 17th May 2005, 20:29   #5  |  Link
SeeMoreDigital
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Here's an unexpected observation....

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


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Old 18th May 2005, 19:48   #6  |  Link
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i assume it simply dumps all the samples from an avi file without really checking the content, like avi2raw from mpeg4ip does it
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Between the weak and the strong one it is the freedom which oppresses and the law that liberates (Jean Jacques Rousseau)
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MPEG-4 ASP FAQ | AVC/H.264 FAQ | AAC FAQ | MP4 FAQ | MP4Menu stores DVD Menus in MP4 (guide)
Ogg Theora | Ogg Vorbis
use WM9 today and get Micro$oft controlling the A/V market tomorrow for free
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