v4l2videoenc: Demote rank below software implementations
GstVideoEncoder
does not yet support falling back to the next encoder
if GST_STATE_CHANGE_NULL_TO_READY
fails. As v4l2videoenc
, more
precisely v4l2jpegenc
is selected but fails on a range of (upstream)
drivers, it effectively breaks apps like Cheese on affected devices.
Until the fallback path is more robust, lets demote the rank below that
used by e.g. jpegenc
, allowing us to unbreak things for users in a
backportable way.
Closes #1631 (closed)
cc @ndufresne