[MEncoder-users] problem with h264/aac .mp4

[Christian Ebert]

* James Hastings-Trew on Tuesday, June 10, 2008 at 23:02:29 -0500
> I've found that mp4box does a crappy job of extracting the video and 
> audio streams. Try this:
> 
> Encode as you have been but instead of encoding the audio to aac, encode 
> it to pcm.
> 
> // extract video
> mencoder temp.avi -of rawvideo -nosound -ovc copy -o temp_video.h264
> // extract audio
> mplayer temp.avi -vc null -vo null -ao pcm:fast
> // encode audio
> neroaacenc -lc -br 160000 -if audiodump.wav -of temp_audio.m4a
> // mux in mp4
> mp4box -add temp_video.h264 -add temp_audio.m4a -fps 23.976 -tmp 
> /temp/user/1000/ MyMP4.mp4

Is there a difference between what mp4box does as opposed to
using ffmpeg for remuxing? Like:

$ ffmpeg -i temp_video.h264 -i temp_audio.m4a \
  -f mp4 -acodec copy -vcodec copy -sameq MyMP4.mp4

I could do the whole thing in ffmpeg, but I might want to use
mencoder's video filters, that's why I'm asking.

c
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