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Re: Varying frame rate




On Sat, 2009-08-15 at 23:48 +0200, Haavard Holm wrote:
> Hello,
> 
>   I am writing an application that capture video/pictures from a webcam.
> My program is built on moinejf.free.fr/*svv*.*c*
> which again is built on v4l2spec.bytesex.org/v4l2spec/*capture*.*c*
> 
> OS is linux 2.6.29.6-217.2.3.fc11.x86_64
> Webcam is "Logitech Quickcam Pro for Notebooks" (046d:0991)
> 
> My obeservation is : Depending on what my camera focus on, the framerate
> varies from 5 to 15 fps. I have tried several times, same result.
> 
> Why is that. How can I avoid this ?
I have observed similar issues with uvc camera on my aspire one (low
frame rate while the illumination is low)

Probably this is a hardware issue, and maybe there is a control to turn
this off.

Best regards,
	Maxim Levitsky


> 
> Best regards
> 
> Håvard Holm
> 
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