pokerpoker Wrote:actually, it's possible to have vobsub in MP4 even it's not standard.

Well actually, you could stick anything in an MP4 - the actual file format doesn't really stop you...

pokerpoker Wrote:my point is, UMDs have .mps files, i cannot demux all streams from them,

MPEG-2 PS - mplayer can demux them.

pokerpoker Wrote:if a 1seg tuner records, i don't think PSP would create pmf or mps files (as they're not supported in MS part of XMB video player) it would create AVIs or MP4s which are really easy to examine.

Considering the camera makes MJPEG AVIs - I'd guess that.  Though IDK how subtitles get in there.  Even if the PSP accepts subs in AVI, I don't think you'd really want to be using MJPEG >_>


Just use PMPlayer AdVanCe if you must have soft subtitles.