Re: Framerate is consistently divided by 2.5

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



Hi Isaac,

On Saturday 06 September 2014 12:35:25 Isaac Nickaein wrote:
> Hi,
> 
> After patching the kernel, the rate that images are captured from the
> camera reduce by a factor of 2.5.

How have you patched the kernel ? If you have both a working and non-working 
version you could use git-bisect to find the commit that causes this breakage.

> Here are a list of frame rates I have tried followed by the resulted frame-
> rate:
> 
> 10 fps --> 4 fps
> 15 fps --> 6 fps
> 25 fps --> 10 fps
> 30 fps --> 12 fps
> 
> Note that all of the rates are consistently divided by 2.5. This seems
> to be a clocking issue to me. Is there any multipliers in V4L2 (or
> UVC?) code in framerate calculation which depends on the hardware and
> be cause of this?

-- 
Regards,

Laurent Pinchart

--
To unsubscribe from this list: send the line "unsubscribe linux-media" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Linux Input]     [Video for Linux]     [Gstreamer Embedded]     [Mplayer Users]     [Linux USB Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [Yosemite Backpacking]
  Powered by Linux