[Bug 797280] webrtcbin: video pixelated

GStreamer (GNOME Bugzilla) bugzilla at gnome.org
Fri Oct 12 21:24:21 UTC 2018


https://bugzilla.gnome.org/show_bug.cgi?id=797280

Mathieu Duponchelle <mduponchelle1 at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |mduponchelle1 at gmail.com

--- Comment #1 from Mathieu Duponchelle <mduponchelle1 at gmail.com> ---
Do you observe high CPU usage with the unmodified version of the webrtc demo?

Have you tried modifying the media constraints in webrtc.js to a lower
resolution?

Pixelated is not a very good description, do you mean chrome lowers the quality
it sends or the decoded video is actually corrupted?

If the video is corrupted, that means gstreamer hasn't received a keyframe and
should be requesting a new one through RTCP.

If the quality is lowered, it means chrome has probably detected packet loss
(based on the receiver reports sent by gstreamer through RTCP), maybe the
statistics are affected when the pipeline struggles to perform decoding in real
time.

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