[FFmpeg-user] hardcode dvdsub subtitle from separate file
nicolas.george at normalesup.org
Thu Jun 20 17:57:32 CEST 2013
Le duodi 2 messidor, an CCXXI, thistle at phwaap.com a écrit :
> Thanks Nicolas. I guess I found it strange that every video with dvdsubs
> that I tried had this problem, even though they all play fine in smplayer
> and others.
Most players will automatically scale the subtitles to fit the video. ffmpeg
is a lower-level tool and requires you to decide what to do exactly by
> I found a link to the -canvas_size patch (
> http://ffmpeg.org/pipermail/ffmpeg-devel/2013-February/139782.html) which
> apparently can be used to fix the size sub2video assumes. With the latest
The -canvas_size is intended for when the size is detected incorrectly, but
I find very unlikely that you find vobsub files that are actually 640×272.
They are most likely at a DVD resolution, 720×576 or 720×480. At best,
forcing the canvas size will result in changing the layout; at worst, it
will cause overlaying to fail because subtitles elements overflow.
That is the reason I suggested to scale and crop, and not to use
> devel the error went away and I could set the same canvas size but I still
> couldn't get the subtitles to display.
Full console output missing.
> So I just ended up downloading srt
That will work. And actually probably look better, because vobsub is a poor
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