[MPlayer-dev-eng] Re: [MPlayer-users] ssa reader for mplayer using vf_overlay

[Ergzay]

On 2005/09/28, at 14:49, Attila Kinali wrote:

> On Wed, 28 Sep 2005 07:09:06 -0400
> Robert Henney <robh at rut.org> wrote:
>
>> I've written a small demonstration of how the vf_overlay filter in
>> mplayer can be used to display SSA subtitles from an external reader.
>
> Nice! Though, this rather belongs to -dev-eng than -users :)
>
>> I've been wanting to improve the SSA support in mplayer, and this 
>> seemed
>> like a good stepping stone method.  Once this project is much further
>> along and once I'm more familiar with the mplayer internals I may
>> attempt a merge it into the mplayer source.
>
> How about completely rewriting the sub system in MPlayer ?
> The current system is limited and doesnt work how it should if
> more sophisticated systems are required.
>
> What you would have to do is:
> 1) Extend -vf expand, so it can draw colored subtitles
> 2) Extend libvo so, that there is a colored draw function
> (yes, this has to be done in libvo for speed reasons. A vf is
> nice but is too slow)
> 3) Rewrite the subreader from scratch, so that it handles
> complex subtitles like SSA and the like correctly and uses
> the new color draw functions.
>
> Yes, this is a lot of work, especialy point 2, but then it should
> not to be too hard to copy the existing draw_alpha in each
> function and extend it to handle colors.

Great, great! I would like to add one thing:
4) Add support for movement and fade effects such that are in ASS 
(advanced SSA).