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This blows my mind (like everyone else's here)! While playing digital copies of somewhat older movies (before BluRay rips came into vogue), a problem which sur
by kumarharsh 8y ago
This blows my mind (like everyone else's here)!
While playing digital copies of somewhat older movies (before BluRay rips came into vogue), a problem which surfaces frequently is that the frame rates of the video and the subtitle track are slightly mismatched, say video at 24fps, subtitle at 25.6fps(?). This makes the subtitles drift away from the video and require a manual intervention every few minutes. If I can't hear the audio properly for some reason, then I just become fed up and don't watch the movie at all. Add to that the existence of different 'cuts' for films, which add another dimension to the subtitle problem.
How would one even go about solving this problem?
- xfer 8y agoIf you use vlc there is a subtitle fps that you can modify.
- rocqua 8y agoAs others have said, matching cuts is very similar to genome matching. In genome matching, often genes are slightly offset, so there is need to correct for that. Matching speed might be possible based on first matching runs of one minute, and then trying to scale with that minute as a fixed point to see which scale works out. Perhaps some heuristics to take common frame rate-ratios into account might help. An even crazier idea: Use the fact that scaling becomes shifting after a logarithm, and try to match after setting g(x) = f(log(x)).