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I want to ask about mpeg4 codec parameters. I use it to encode video in Evalvid environment as follows:
./ffmpeg -s cif -r 30 -b 64000 -bt 3200 -g 30 -i raw.yuv -vcodec mpeg4 vid.m4v
The video will be encoded using the MPEG-4 codec. What are the specific parts from MPEG-4 that will be taken if mpeg4
is added as encoding parameter?
Without specifying anything else it uses the Simple profile. No idea how to get ASP or others, as I've never had to work with MPEG-4 Part 2 a lot. – slhck – 2013-06-08T20:52:26.333
@slhck as always, I bow to your superior knowledge :) – evilsoup – 2013-06-08T20:55:19.700
Okay, it uses Simple profile if (and only if) neither B-frames nor Qpel motion compensation are enabled, or if you specify it through
profile
(no idea what the options are). Seempeg4_encode_visual_object_header
inmpeg4videoenc.c
. – slhck – 2013-06-08T21:07:52.950