Missing decoder plugin

[gotsring]

My guess is that it's because v4l2sink has some weirdness where it doesn't
seem to accept GStreamer caps and so it just fails. Therefore, you might
have to convert the video into a format that you specify and add an identity
element before v4l2sink. 

Something like
gst-launch-1.0 rtspsrc location=rtsp://192.168.87.43/ ! decodebin !
videoconvert ! video/x-raw, format=YUY2 ! identity drop-allocation=1 !
v4l2sink device=/dev/video0

See this post and the links therein for details:
http://gstreamer-devel.966125.n4.nabble.com/Error-using-v4l2sink-when-combining-2-camera-streams-td4696728.html



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