I captured some video from a hardware capture card.  It has a few hundred frame 
drops in one hour of video.  The container format is .avi.   When I play the 
captured file with mplayer, the audio is out of sync with the video.  The same 
is true if I encode the video with ffmpeg and play it with mplayer.
Is there any way to use ffmpeg to sync the audio with the video?  I know it's 
possible to extract the audio from the avi file and stretch/compress it to 
match the length of the video.  I'm not talking about that.  I'm wondering if 
timestamps are typically stored for both audio and video and if there is a way 
to somehow modify the avi file so when I play it, the audio is in sync with the 
video.
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