[MPlayer-dev-eng] SVCD subtitles ?

[Arpi]

Hi,

> Well, here goes:
> 
> SVCD subtitles are transported in private streams with id 0x70 (AC3 has 0,x80+, DVD subs 0x20+ a
> nd CVD subs 0+)

Hmm. Then all the sample files some user uploaded has CVD (0+) subtitles :(

> Then image data follows, and is formatted like this:
> 2 bit codes are used so 01 means 1 pixel of color 1,
> 10 means color 2 etc.

so, no compression (RLE, etc) at all?

> If anyone is interested in finding out more, take a look at phillips svcd tools (only works unde
> r NT4 afaik, (and not that easy to find anymore.. dvd.da.ru, doom9.net or similar perhaps?), it 
> can create good subtitled svcds and just open them in your favorite hex editor ^_^

do you have sample files using this format?
is someone interested in implementing this kind of sub support?

maybe we should intorudece subtitle en/decoders... just like audio/video
codecs. it seems that there are many of them:
- ascii subs (10+ formats)
- spu (dvd subs)
- svcd subs
- cvd subs
- closed captions (text subs used on old DVDs, they are in the mpeg ES video
streams - xine supports them)

> The subs you get from tools like "I-author" are not real SVCD subtitles, they are CVD sub and I 
> don't know anything else about them except for that they look similar to dvd subs but the RLE en
> coding and command format is different.
hmm. shouldn't be too hard to RE it, but the question: does it worth at all?

i mean there are text subs for every movies out there...


A'rpi / Astral & ESP-team

--
Developer of MPlayer, the Movie Player for Linux - http://www.MPlayerHQ.hu