I'm having this problem: some flv video files I download get progressively out of audio sync.
How to solve this problem using Mac software?
I tried syncing them using Digital Performer and some syncing worked but some videos never get synced whatever FPS I use.
Please help.
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Probably a Tiger issue (10.4.x is what you're running according to your Profile). If you can't update your OSX to something a bit more modern, Adobe Flash just may not be for you any more. Sorry.
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Actually, my answer made perfect sense if you still used the hardware you've failed to update in your profile. Might want to have a look and fix it.
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You write you're downloading flv's. Would you provide a link so I might try it and see what happens? I'm also running 10.8.4. Thanks.
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Well, I thought you were a video expert. I will not disclose my privacy (the videos I watch) in a forum.
If you have some general tips about the matter, Ok, but if you don't... Sorry about that. -
Well, you could provide a link in a PM.
The NSA already knows what you're watching. ;D -
Well, let the NSA know what I'm watching. We can't do anything about that.
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typical sources for progressively increasing delay is caused by:
a. wrong time codes (extracting raw streams with flvextractcl and remuxing the video and audio with ffmpeg should help there if the video is vfr and the average frame rate is properly set)
b. wrong frame rate (remuxing and changing the frame rate with ffmpeg might help there)
c. some how broken streams or headers (sometimes remuxing with ffmpeg helps)
d. someone messed up and remuxed a vfr video stream without keeping the time codes or reencoding the video to compensate the removed time codes -
Thank you very much for your learned response. As an amateur video user, I'll try to test the 4 options you give me.
There are some expressions you use that I ignore, for instance, "vfr".
Also, I'm a Mac user and I really don't know if there is "flvextractcl" for Mac. -
vfr = variable frame rate
in contrast to
cfr = constant frame rate
Also, I'm a Mac user and I really don't know if there is "flvextractcl" for Mac.
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