I have converted a couple of mkv subtitle tracks to srt's using Subler's OCR capability and doing final editing/correction with Jubler. I must say that the OCR process is just "ok". Enough errors need to be corrected that I feel like I've watched the movie before ever actually watching the movie. Does anyone have a process for doing this that what I am currently doing or do most of the OCR software use the same engine (and therefore giving a similar output)? Has to be an all mac solution.