Any utility to mux AAC audio track from .rmvb file into MP4?

whileloop · 9th May 2009, 13:13

I currently use mkvmerge and mkvextract from MKVToolNix to extract AAC audio track from .rmvb file to a ADTS-AAC (.aac) file. Then mux the .acc and .264 into mp4 by MP4Box. But MKVToolNix is a little too big to be included into another package.

I tried ffmpeg, but ffmpeg seems have bugs handling the timestamps of rmvb file.

Is there any other command line utility that can extract AAC audio from .rmvb or mux into mp4 without re-encoding?

roozhou · 9th May 2009, 15:08

That is also what i am looking for.
Here is the result from my test with ffmpeg's aac demuxer/muxer:

mkv/mp4/rm/adts -> adts OK
adts -> mkv ................ Broken
anything -> rm ............ Broken
anything -> avi ............ Broken
rm/avi/mkv/adts -> mp4 . Broken
rm/avi/mp4/mkv -> mkv . OK
mp4(non ipod) -> mp4 ... OK
anything -> ts ............ Broken
ts -> anything ............ Broken

IMHO the best way is to fix ffmpeg's broken aac demuxer/muxer ... on your own. It may take years for ffmpeg-devel to fix these bugs.

9th May 2009, 13:13	#1 \| Link
whileloop Registered User Join Date: Oct 2005 Posts: 2	Any utility to mux AAC audio track from .rmvb file into MP4? I currently use mkvmerge and mkvextract from MKVToolNix to extract AAC audio track from .rmvb file to a ADTS-AAC (.aac) file. Then mux the .acc and .264 into mp4 by MP4Box. But MKVToolNix is a little too big to be included into another package. I tried ffmpeg, but ffmpeg seems have bugs handling the timestamps of rmvb file. Is there any other command line utility that can extract AAC audio from .rmvb or mux into mp4 without re-encoding?

9th May 2009, 15:08	#2 \| Link
roozhou Registered User Join Date: Apr 2008 Posts: 1,181	That is also what i am looking for. Here is the result from my test with ffmpeg's aac demuxer/muxer: mkv/mp4/rm/adts -> adts OK adts -> mkv ................ Broken anything -> rm ............ Broken anything -> avi ............ Broken rm/avi/mkv/adts -> mp4 . Broken rm/avi/mp4/mkv -> mkv . OK mp4(non ipod) -> mp4 ... OK anything -> ts ............ Broken ts -> anything ............ Broken IMHO the best way is to fix ffmpeg's broken aac demuxer/muxer ... on your own. It may take years for ffmpeg-devel to fix these bugs. Last edited by roozhou; 9th May 2009 at 15:18.