rtpopusdepay: Doesn't put granulepos information on outgoing buffers and can't be used in combination with oggmux
This creates an unplayable file
gst-launch-1.0 audiotestsrc num-buffers=100 ! opusenc ! rtpopuspay ! rtpopusdepay ! oggmux ! filesink location=test.ogg
The same works fine with e.g. webmmux
.