[MPlayer-dev-eng] [PATCH] vobsub: keep aspect ratio
fenwick at freemail.hu
Sat Jan 22 14:12:19 CET 2005
2005-01-22, szo keltezéssel 11.54-kor Guillaume Poirier ezt írta:
> On Sat, 22 Jan 2005 06:39:01 +0100, Csillag Kristof <fenwick at freemail.hu> wrote:
> > What do you think? IMHO the subtitles look much better this way.
> > Shouldn't this be the default behavior?
> You're probably right... but what happens if you use -vf expand to get
> for instance a 4:3 aspect ratio, which was what I used it the past to
> prevent vobsub distortion? (I must admit I haven't tested your patch
The -vf expand thing also works, but there are several drawbacks:
- You usually don't want to give back that large black stripes,
just a little so that the subtitles can be put on them.
So you won't have the original aspect ratio, just
something less distorted.
- Using a video filter takes more CPU time
However, subtitles under the movie are nice, so you might want to use
the -vf expand anyway.
But these things are not mutually exlusive: you can use -vf expand to
get a black bar under the movie to render the subtitles at,
and -spu-keep-aspect to set them to the correct aspect ratio.
(Probably the best is to use both aproaces.)
For a comparison,
"mplayer aspect-demo.mkv -slang eng -vf expand=0:-100:0:0" gives this:
...and the same, with -spu-keep-aspect added, gives this:
Csillag Kristof <fenwick at freemail.hu>
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