I recently developed a habit of watching anime on PSP. Unfortunately most of the episodes are in either MKV or OGM containers with included subtitles (and occasional dual audio) and I just can't figure out a way to batch-convert these files to PSP-friendly H264. Normal converters don't add subtitles and pick whatever audio track they can find first. Couldn't find any tips on this elsewhere (apart manually extracting sub/audio tracks for every single file and later converting them individually). Any ideas?