[M4IF Technotes] including videos to mp4 scene

Jean-Claude Dufourd Jean-Claude.Dufourd enst.fr
Mon Apr 14 12:23:15 EDT 2003


tm991058 wrote:
> .cmp

raw MPEG-4 video AUs
output of the reference software encoder from Microsoft
> .media

raw AUs
output of "mp4tool -export"
> .nhnt

documentation of where are the AU, what are the CTS/DTS... for a .cmp or 
a .media or a .m4v file.
> .h263

raw h263 AUs
> I also found an example with an avi-file...

ooooops! no idea.
> My question is:
> Which file-codec is recommended? And how to I produce it? (or convert
> an avi file to it)

For pure encoding, I recommend mpeg4ip (look at sourceforge).
They ignore Systems, but their mp4create converts avi to MPEG-4 video + 
audio.
Then you can use mp4tool to extract the video and the audio tracks, and 
then reuse them in a context with BIFS.
> Can you recommend a MPEG-document or some other document which deals 
> with video formats for MPEG-4?

The video standard ? 14496-2 ? It may be too much info for your taste.
> At the moment I'm not really sure if it is the fault of th 
> video-file-codec that the mp4tool does not converte the bifstextfile to 
> mp4 or if it is the fault of my UPDATE OD code..maybe there are mistakes 
> in the code...

With the samples, you should be able to manage.
Best regards
JC
--
Jean-Claude Dufourd       @======================================@
ENST, Dept COMELEC             The wing, over the big rock...
46, rue Barrault          @======================================@
75013 Paris                Tel: +33145817807    Fax: +33145804036


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