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#1 Posted : Friday, October 2, 2009 4:40:45 AM(UTC)


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I am developing an application that (among other things) takes still images from a webcam and saves it to a file, and I use Mulitmedia 15 for this.

What Im wondering is, is there any reason why I can’t call Startcapture(ltmmCapture_Mode_Still) once at the start of the application, and then simply call SaveStillBitmap(bstr, format, quality, 0, 5000) each time I want to take a still image?

I have tested it, and it seems to work fine and I can’t find anything to suggest this is a bad idea in the documentation. But Im curious if there is some deeper reason why I shouldn’t do this.


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#2 Posted : Sunday, October 4, 2009 5:03:19 AM(UTC)


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I think you can do that. What happens internally when you do it like this is that the internal DirectShow filter graph will be created at the beginning and all filters will remain connected throughout. If this approach doesn't cause problems at your side, go ahead and use it.
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