[MPlayer-users] why do subtitles disappear when using -vo png ? [dup?]

[Reimar Döffinger]

On Mon, Nov 16, 2009 at 07:15:46AM +0100, Matthias Lang wrote:
>              In other drivers, such as vo_png.c and vo_jpeg.c, the
>              function is empty. So it looks like they were never
>              intended to show subtitles. Slightly unexpected design
>              decision, but it looks deliberate.

The OSD for these is supposed to be rendered by
-vf expand=osd=1
I never remember is it is supposed to be added automatically or not.

> > (Originally, I was trying to 'burn' subtitles into the video stream,
> > using
> >
> >   mencoder -sub subtitle.srt -o with_subtitles.avi -oac copy -ovc lavc film.avi
> 
> Retrospectively, I realise it's not clear from my first post that the
> above mencoder command line actually produces the intended
> results. For the record: it doesn't work on older versions of
> mencoder, such as 1.0rc2-4.2.4, but it does work on, e.g., MEncoder
> SVN-r29857-4.3.4.

Then possibly it's mencoder that auto-inserts that filter but not
MPlayer.