Hi all,
Recently I muxed an 23.976fps video to audio that came from a 25fps video - to get the best quality.
Problem is, after converting the video to 25fps(with mkvmerge) to match the audio, and matching up a time difference, they're still out of sync - I can match them at the start, but the audio gets more and more out of sync.
I have no way to quantify this, so can't see how I can stretch it via mkvmerge as it requires numerical values of course.
Does anyone know of an simple and easy to use application that uses a visual sync system such as the dual-screen visual sync system that Subtitle Edit uses?
The audio is ac3 5.1, if that matters.
Thanks in advance for any help,
Simon
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Last edited by cinesimon; 5th Sep 2011 at 19:44.
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Sure you do. Determine how far out of sync the two are near the end of the video and calculate a ratio. For example, if the video is 3600 seconds long and the audio is 15 seconds ahead of the video near the end, then you have make the audio 3600 / (3600-15) longer -- 1.004184.
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