This is how you can convert your DVB recordings' subtitles to iDevice-friendly MP4 subtitles
By Werner Ruotsalainen
UPDATE (12/Sept/2012): in the meantime, Subler, one of the best remuxer and MP4 editor tools has also received OCR capabilities. It has some advantages over the character recognition of SubRip, introduced in the article below. Please read THIS for a full tutorial.