Gstreamer: No RTP protocol present (Howling wong)

[Marc Leeman]

> I believe that I have figured out where the mistake lies in... is
> because I failed to fill in the filtercaps for the video in the reciever
> portion of the pipeline. Would just need to fill in caps=application/x-rtp
> to do the magic

> gst-launch-1.0 udpsrc port=5555 caps=application/x-rtp ! rtph264depay ! decodebin  ! autovideosink

As a good practice, when sending RTP over UDP, use even ports for the
data, odd ports are used for the accompanying RTCP packets.