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08.11.2005 at 01:12PM PDT, ID: 21524302
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7.8

Multiple webcam capture streams with DirectShow?

Asked by blak3r in DirectX Graphics & Game Programming

Tags: , , ,

For a few weeks now I've been attempting to modify the DirectShow AMCap
sample to simultaneously render video from multiple webcams (in this case,
lower-end Logitech Quickcams). I've decoupled most of the data structures as
appropriate and managed to get multiple video previews to display at once,
but I run into trouble when I try to capture more than one stream to a file
destination. The graphs simply fail to run when there's more than one camera
activated at once (although one camera will capture just fine).

There could very well be something wrong with my code, but I've heard vague
references elsewhere that there's some limitation in the current
implementation of DirectShow that prevents this from ever working correctly
with USB cameras (even though I've seen applications available that do
exactly this). Could anyone elaborate as to whether they've gotten something
like this to work correctly, or maybe point out some common errors or
workarounds?Start Free Trial
[+][-]09.07.2005 at 03:33AM PDT, ID: 14835099

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About this solution

Zone: DirectX Graphics & Game Programming
Tags: webcam, directshow, multiple, capture
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Solution Provided By: CongUan
Participating Experts: 1
Solution Grade: A
 
 
[+][-]11.21.2005 at 02:16PM PST, ID: 15337683

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[+][-]11.26.2005 at 06:46AM PST, ID: 15364706

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