Improve default resolution for a Logitech C920 webcam?

Stefan Sauer ensonic at
Fri Feb 28 01:47:12 PST 2014

On 02/28/2014 01:35 AM, Christian Kreibich wrote:
> Hey Stefan,
> On 02/25/2014 01:34 AM, Stefan Sauer wrote:
>>> I don't know much about gstreamer but from some digging it looks like on
>>> my Fedora 20 box Google's talkplugin uses gstreamer-0.10. 
>> Can you cite some reference?
> Well, I based this on the libraries shown by lsof on my Firefox
> processes while in a Hangout session. However, I've now noticed that
> when I run Chrome (where things don't look any better), the same plugin
> code gets used but none of the involved processes show gstreamer-related
> libraries -- so perhaps I spoke too soon? I'll ask on the hangout forum.
> (Obviously, if anyone knows details about what's driving Google's talk
> plugin, feel free to email me off-list.)
> However, let me start from the other end -- for cheese (3.10.2), for
> example, it seems gstreamer 1.0 is involved (judging from a pldd on the
> cheese process, which shows a ton of stuff below
> /usr/lib64/gstreamer-1.0/) but I still can't seem to get the resolution
> past 640x480. Is the resolution constraint a limit of this particular
> cheese version, or can I do something to improve it?
I think cheese is a better candidate to investigate, as it is definitely
using gstreamer and is open source.

Can you run
GST_DEBUG="v4l2*:4" gst-launch-1.0 v4l2src num-buffers=1 ! autovideosink
and post the log.

> Thanks,
> -C.
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> gstreamer-devel at

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