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Directshow subtitles (preferably anti-aliased)

Hi.

I'm writing a simple video player application, and I need to display subtitles and/or other controls (i.e. volume level). I'm using pure directshow from directx9 and windowless mode (at least i think, the video is displayed on a forms canvas). I need to display the subtitles (preferably anti-aliased). I tried to display the subtitles in a second form above the video, but it doesn't work in fullscreen.

Code prefered (delphi or c/c++), but any advice accepted.

Thanks.

davebytes

Have you checked out the DX9 DShow samples? I just found the watermark sample:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dnwmt/html/introducingsomenewvideomixingrenderersampleapplica.asp
(click the link to the watermark sample...)

Looks like it does what you are looking for, in terms of you saying "and/or other controls". The sample should be a good starting point.

You could also ask this guy, if you specifically just want to do subtitles (sounds like there's some form of Subtitle Mixer already built-in to DS):
http://tobias.everwicked.com/

-d

_corey_

Depending on how you need to sync things up, the new VMR9 render filter might do what you want. it provides an interface to use bitmap overlays and alpha values.

I've had to use a custom filter to draw text over the video stream, but you don't need to put that effort in unless you need that annotated video to save to a file.

corey

davebytes

The Samples page I linked to above gives source examples that should work with both VMR7 and VMR9 -- in theory, if you believe MS. ;)

-d

BlueAlien

ASKER

Thanks for the advice, but I wont't be able to try them till next week.

BlueAlien

ASKER

I checked out the Watermark sample, but it shows alpha-blending, not anti-aliasing. Though it helps with setting up the wmr9. I would need help with the anti-aliased text.

Thanks.

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davebytes

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_corey_

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BlueAlien

ASKER

Thanks for the answers and sorry for the late reply.