OCR is not necessary. You can change the subtitle speed in mkvmerge GUI as well, by selecting the subtitle track and entering the following in the "Stretch by" field:
25 -> 23.976: 25025/24000
25 -> 24.000: 25/24
23.976 -> 25: 24000/25025
24.000 -> 25: 24/25
I hope I got the numbers correct. Otherwise you could also re-time the subtitles with programs like BDSup2Sub.
Last edited by sneaker_ger; 24th September 2012 at 12:04.
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