[Bug 796525] when gst-rtsp-server is used in conjunction with v4l2h264enc on an imx6, nobody allocates downstream buffers

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=796525

--- Comment #7 from Keith Thornton <keith.thornton at zeiss.com> ---
Michael Tretter traced this problem and has determined the following
gst-rtsp-server links the RtpBin after the pipeline has been set to running.
This leads to a reconfigure event being sent to the v4l2videoenc. The element
tries a re-format but this is refused because the element (the driver) is in
streaming mode. In our case, the caps are identical to the previously
negotiated caps so it could continue without re-configuration. If a
reconfiguration were necessary, the encoder would need to be stopped and then
re-started.

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