Pipeline playing ... but no flow

[Peter Maersk-Moller]

Hi.

I'm trying to send a combined audio and video stream hopefully synced using
mpeg2 TS in RT in UDP and while my receiving pipeline says it is playing,
it does not flow. Can you help me understand why. To demonstrate the
problem i have these two pipelines:

Sender:

  gst-launch-0.10 -v videotestsrc ! x264enc tune=zerolatency ! queue !
mpegtsmux name=muxer ! mpegtsparse ! rtpmp2tpay ! udpsink host=127.0.0.1
port=8004 sync=true audiotestsrc ! faac ! queue ! muxer.

Receiver:

  gst-launch-0.10 -v udpsrc port=8004 caps='application/x-rtp,
media=(string)video, clock-rate=(int)90000, encoding-name=(string)MP2T-ES,
payload=(int)33' ! rtpmp2tdepay ! decodebin2 name=decoder ! queue !
'video/x-raw-yuv' ! fakesink decoder. ! 'audio/x-raw-int' ! queue ! fakesink

Technically the rtmp2tdepay can be eliminated, but it shouldn't matter. The
receiver IP is set to 127.0.0.1 to make it easy to test on same machine.

The receiving end reports this:

    Setting pipeline to PAUSED ...
    Pipeline is live and does not need PREROLL ...
    Setting pipeline to PLAYING ...
    New clock: GstSystemClock

plus a lot more.

I assumed this meant the pipeline was flowing, however it does not.
fakesinks would print a lot of text if it was.

I assume the receiving end somehow is filling its queues perhaps waiting
for PAT/PMT to arrive. Maybe?

According to doc, the mpegtsmux should insert PAT/PMT every 9000 timer
ticks and timerticks is set to 90000 per sec. In my book it should mean
every 100ms ... or perhaps it means every 10 second or perhaps I
misunderstand that part.

Is there a parameter I miss to make the receive end start flowing?

After 7-11 secs I see this in the receiver end

/GstPipeline:pipeline0/GstDecodeBin2:decoder/GstMultiQueue:multiqueue0:
max-size-buffers = 5
/GstPipeline:pipeline0/GstDecodeBin2:decoder/GstMultiQueue:multiqueue0:
max-size-time = 0
/GstPipeline:pipeline0/GstDecodeBin2:decoder/GstMultiQueue:multiqueue0:
max-size-bytes = 2097152

Any suggesting to help getting the receiver end flowing would be really
appreciated.

Kind regards
Peter Maersk-Moller
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