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Video and Audio out of sync – post render
Hello all. I recently started capturing with a different program. Everything was set to NTSC standard. After capturing for 25 minutes (avi file), I reviewed the file and everything was good. Looked fine, was not out of sync. After rendering (mpg2) however, it is getting out of sync after about a minute and thirty seconds. After checking the file properties, it said the fps was 30. Things capture in the old program were 29. Could this be corrected? Never ran into this before. Any help would be -greatly- appreciated.
Running Vegas Pro 12 and capture with AVer MediaCenter 3D.
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4 Replies
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Just to double-check that, could you try using something like MediaInfo to check the actual frames per second? If you’re using the Windows ‘properties’ check, be aware that Windows (7 anyway) rounds off the number, so 29.97 will show as 30.
MediaInfo should also show you whether your video and audio tracks are actually the same length — of course, you want them to be. I’ve come across videos that have video and audio tracks that are different lengths.
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Radio guy in a TV world. Bigasssuperstar.com -
They are indeed 30 frames per second.
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Which they? Your capture or your render is 30? Because, truly, neither one should be.
TV is 29.976 frames per second. Your capture should be that, not 29.
You should render at the same rate, not 30.
So if you captured at 29, rendered at 30, you’ve done two things in a row incorrectly.
If MediaInfo is saying either your captured video or rendered video is 30 frames per second, something has been done wrong.
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Radio guy in a TV world. Bigasssuperstar.com -
I understand it was captured wrong. What my question was is how can I render that footage correctly at 29.97 without it falling out of sync.
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