subtitles on overlay surface

[hilario]

Hi all:

I would like to make directvobsub display subs on the overlay surface instead of video surface.
Anyone knows how to do it ??

[jagabo]

In AviSynth:

src=AviSource("DV.avi")
ovr=BlankClip(src).TextSub("subs.srt")
Overlay(src,ovr,0,0,ovr)

BlankClip() makes a black video with properties identical to src and TextSub() adds the subtitles to it. I used Overlay() to overlay the subtitle clip onto the src clip. Since the ovr clip is white text on a black background it is suitable to use as an alpha channel.

[hilario]

Sorry Jagabo but I'm not that skiled on this matter.

I have AviSynth but I dont see how to follow yr steps.
Can you please be more specific ?? In sum what I'm trying to do is to make my Windows Media Center display subtitles on the overlay surface
like when I play movies with Kmplayer.
Tks for yr kind assistance

[jagabo]

So you're writing your own software to play video? My AviSynth example won't be of any help for that. I don't know anything about the details of how directvobsub works within other software.