Any good programmers familiar with MarvelG400?

[Jkun]

I would like to do following with a Marvel G400: use the preview mode (not capture) to display full resolution video (720x480/576) from Svideo input scaled fullscreen to 800x600...

That it does out of the box. :-) What I'd like to add is display subtitles on this preview screen.

Not being a programmer, I don't know exactly what needs to be done but I suspect it involves writing those subtitles directly into the Marvel memory, into the video frame.

Anyone here who has experience in programming or knows the Marvel hardware well and can tell me if it's feasible?

J-kun

[AVATAR-X]

The easiest way I could think of to do that is to make a "Filter" with Microsoft's Filter Graph Editor utility (Graphedit). Basically, it would allow you to string on a bunch of modules together to perform a task (in this case Video Input -> Resize -> Subtitle).

I had a friend working on something similar, but he never got around to finishing it. I believe the Input and Resize filters are already there and are simple to use (Drag and Drop interface). But, you will most likely have to write a subtitle filter.

P.S. I believe it is a part of Direct Show, this site has more info.

http://www.microsoft.com/DirectX/dxm...tm#default.htm

[This message has been edited by AVATAR-X (edited 02 August 2000).]

[Jkun]

Thanks for your reply. I'll pass it on to a few programers I know and see what they say.

But I do have a question regarding your method: the preview mode from cards like the Marvel is usally handled on the card's memory. I.e. it never reaches the system's memory. Can Directshow and those filters work directly on the gfx card's memory?

The idea is to do the subtitling realtime. For offline subtitling I can use VirtualDub and the SSA plugin.

Thanks!

J-kun