Re: Video resolution limited to 32x32 pixels in Skype with Syntek 1135 webcam

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On Friday 02 January 2015 11:07:09 Tibor Mišuth wrote:
> Hello,
>
> I've installed Ubuntu 14.04 (kernel 3.13.0-43-generic) on an old Asus
> F5R laptop recently. It's equipped with an integrated Syntek 1135
> webcam for which the gspca_stk1135 module is loaded.
>
> lsusb:
> Bus 001 Device 005: ID 174f:6a31 Syntek Web Cam - Asus A8J, F3S, F5R, VX2S,
> V1S
>
> lsmod (extract):
> gspca_stk1135          13318  0
> gspca_main             27814  1 gspca_stk1135
> videodev              108503  2 gspca_stk1135,gspca_main
>
> The webcam works fine in guvcview and almost fine in cheese
> (resolutions are limited to square options, e.g. 1024x1024).
>
> Unfortunately there is an issue with Skype. It can detect the device
> /dev/video0 (once
> LD_PRELOAD=/usr/lib/i386-linux-gnu/libv4l/v4l2convert.so) but the
> resolution is limited to 32x32 pixels which is useless. I tried to set
> video size in Skype's config.xml, but then Skype didn't show anything
> (just black screen).
>
> I did a test with an external Genius USB webcam (gspca_sonixb module)
> that worked fine (resolution was 640x480 that is max for the camera).
>
> Is there any way to debug the driver (gspca_stk1135) and v4l to find
> out the root cause of the issue?

The driver supports variable resolution from 32x32 to 1280x1024 in 2 pixel 
steps. The problem is that some programs are crap and cannot handle that.

-- 
Ondrej Zary
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