tripp <[EMAIL PROTECTED]> added the comment:

reproduced.

clarification
has zero effect on mp4.
has a single useful effect with avi and mkv.
command type:
ffmpeg -i v.mp3 -itsoffset 20 -i input.avi -vcodec copy -acodec c
opy -y -map 1.0 -map 0.0 oo.avi

can place a positive (positive only) offset to video.
playback with directshow has the first frame as a still
for the duration of the offset.

with mplayer, with an avi, sound is played on it's own for the offset,
and then video kicks in.
with mkv there is no effect.

other combinations either do nothing or break audio video interleave.

i think it's mentioned somewhere that ffmpeg doesn't pad streams,
this would be a solution.
pad audio with silence,
pad video with the first frame 
for duration of offset.


ty
tripp

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substatus: new -> reproduced

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