Doom9's Forum - View Single Post - pball's Bluray PGS Subtitle splitter (.sup file splitter)

cubicibo · 4th April 2022, 23:02

There is no such thing as duration in PGS. Each caption has a presentation (decode) timestamp and remain on screen until a new presentation empties the graphics plane.
So, if you take the SUP from a given video, slice out (properly) a portion of the raw data then mux it back to the same untouched, video stream, the removed portion will either:

• Display the last shown subtitle (missing plane clear segment)
• Show nothing (the desired behaviour, properly sliced)

I don't know how you generated your two files but it sounds like sub2.sup has modified timestamps in the stream.

4th April 2022, 23:02	#9 \| Link
cubicibo Registered User Join Date: Feb 2022 Posts: 108	There is no such thing as duration in PGS. Each caption has a presentation (decode) timestamp and remain on screen until a new presentation empties the graphics plane. So, if you take the SUP from a given video, slice out (properly) a portion of the raw data then mux it back to the same untouched, video stream, the removed portion will either: • Display the last shown subtitle (missing plane clear segment) • Show nothing (the desired behaviour, properly sliced) I don't know how you generated your two files but it sounds like sub2.sup has modified timestamps in the stream.