Improve default resolution for a Logitech C920 webcam?

Stefan Sauer ensonic at
Tue Feb 25 01:34:17 PST 2014

On 02/25/2014 04:15 AM, Christian Kreibich wrote:
> Hi there,
> I'm using a Logitech C920 webcam and wonder whether I can convince the
> applications using the camera (particularly Google Hangouts) to use a
> better resolution than the fairly horrible 640x480 I'm currently stuck
> with. I can easily get higher-resolution video off this camera using e.g.
>   gst-launch-1.0 -v -e v4l2src device=/dev/video0 ! queue \
>      ! video/x-h264,width=800,height=448,framerate=30/1 ! h264parse \
>      ! avdec_h264 ! xvimagesink sync=false
> 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?
> I've managed
> to build from the 0.10 git branch and add it to my
> installation, as I read that it adds support for H.264. However, this
> alone seems to make no difference -- the resolution is still crap.
> Is there anything else I can do here, or do I need to wait until the
> webcam-using applications bump up to gstreamer 1.0?
I guess you have to request the feature from the application developers.
If for some reason the app requests 640x480, there is not much you can
do by upgrading components. But also that theory needs to be checked.

> Thanks,
> -C.
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