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Group:  English: Entertainment » microsoft.public.windowsmedia.sdk
Thread: displaying uncompressed video

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displaying uncompressed video
Coen S 10/31/2008 10:46:01 AM
Hi!

I'm very new to Directshow and I can't get a good idea of were to begin.
First of all, I've made my own webcam which outputs raw data which I will
convert to RGB. All the filters in Directshow transform to RGB so I should
have an easy job to display the data on my screen since I don't have to use a
filter.
But what should I do with my uncompressed RGB data to display it?

Any help would be appreciated!

Thanks in advance,

Coen Suurs

Re: displaying uncompressed video
"Alessandro Angeli" <nobody[ at ]nowhere.in.the.net> 10/31/2008 6:07:02 PM
From: "Coen S"

[Quoted Text]
> I'm very new to Directshow and I can't get a good idea of
> were to begin. First of all, I've made my own webcam
> which outputs raw data which I will convert to RGB. All
> the filters in Directshow transform to RGB so I should

That is not true: RGB is not some sort of "canonical" format
in DirectShow and most filter will work in YUV just as well.

> have an easy job to display the data on my screen since I
> don't have to use a filter.
> But what should I do with my uncompressed RGB data to
> display it?

Nothing: it's not the source filter's job to display
anything. The source filter just outputs its data, then some
other filter in the graph will render it. All you need to do
is write the live push/capture source filter for your webcam
(or driver supported by the VFW wrapper, the WDM wrapper or
the KS proxy), then the video renderer will be connected
automatically when the application builds the rendering
graph.



--
// Alessandro Angeli
// MVP :: DirectShow / MediaFoundation
// mvpnews at riseoftheants dot com
// http://www.riseoftheants.com/mmx/faq.htm


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