[MEncoder-users] AV sync issues with seperate audio and video encodeing

[ilyail3 K]

I'm a novice in the field of video encoding, but some project of mine
requires me to encode movies to
mp4 with video encoding of h264 and audio libaac or liblame.
I've tried encoding it with lavf , but it gives me the creepy warning about
the b frames
do b frames have significant contribution to the quality of the video in
x264?

I figured out that the best way to use b-frames and mux to mp4 is with
MP4Box.
but every time I get a bad A-V sync issue of about 30 seconds.

I've tried everything , extracting the video with ffmpeg with -async , or
with mplayer  it doesn't seem to make any difference.

can somebody please post an example of how to create .mp3(for example) files
and .h264 files(raw h264).
mux them with MP4Box and get a prefect audio-video sync.

besides that small issue , you program is by far superior to ffmpeg.