[MPlayer-dev-eng] More subtitles: mencoder with DVD subtitles, mplayer with Fri Jan 4 01:50:38 2002
arpi at thot.banki.hu
Fri Jan 4 01:02:45 CET 2002
> Support for subtitles in mencoder. Currently only works correctly if
> no image resizing is applied. If you upscale the image, the subtitles
> will be to small and too much toward the upper left corner (they are
> not scaled). Downscaling is a complete NO NO! Fix will be soon.
Please wait with this.
We need a big change in mencoder: first assemble the image slices together
to a whole image. When the frame decoding is done, and we have the complete
image, we should do some optional filtering:
- render subtitles
- colorspace conversion (to yv12, requires for scaling)
- colorspace conversion (to encoder's accepted format)
this way subtitles will be scaled.
> Preliminary support for VobSub subtitles. Use the -vobsub option.
- why is it in mplayer only?
- why is palette NULL? the included vobsub code requires IFO file as well.
- why you need external mpg demuxer code (vobsub.c) ? isn't libmpdemux ok?
(not a big prob, i just want to minimalize redundant code)
- why did you add new render entry to libvo's sub.c ? i think as dvd sub and
vobsub are very similar things, they should be handled by the same code.
> You can turn antialiasing on or off at compile time (see first line of
> spudec.c). Opacity is not yet correct with antialiasing. Seeking
> backward is not possible. When seeking forward or when selecting a
> subtitle that is not the first in the file, subtitles take a very long
> time to catchup.
maybe we should go through the vob, and read all subtitles to memory.
then we could freely seek. i don't think it needs too much memory. if yes,
we can only keep the indices of file, and read it runtime.
A'rpi / Astral & ESP-team
mailto:arpi at thot.banki.hu
More information about the MPlayer-dev-eng