UDP streaming h264 in mpeg2-ts

[Tom Buysschaert]

Hi all,

After upgrading to gstreamer 0.10.36 (and latest plugins) i encounter some problems playing UDP streams.

Using VLC i send a UDP multicast stream of h264 video/AAC audio encapsulated in a MPEG2 transport stream over the network.
Using gstreamer playbin2 i try to play this incoming UDP stream:

 - GST_DEBUG=3 gst-launch-0.10 -v playbin2 uri=udp://239.192.0.4:1234
 
This setup worked like a charm on my kubuntu 11.10. But after upgrading to kubuntu 12.04 with gstreamer 0.10.36 (and latest plugins) this stream doesn't start playing anymore. Debug logs shows me following warning:

WARN mpegtsdemux gstmpegtsdemux.c:3104:gst_mpegts_demux_src_pad_query:<mpegtsdemux0> unsupported query format or no bitrate yet to approximate duration from bytes

Any ideas what can be the problem here? Are there some known bugs involving UDP streaming in gstreamer 0.10.36 (and latest plugins)?

Hope you can help me. Any feedback is welcome.

Best regards,
Tom

[Holger Kaelberer]

Hi

>
> WARN mpegtsdemux
> gstmpegtsdemux.c:3104:gst_mpegts_demux_src_pad_query:<mpegtsdemux0>
> unsupported query format or no bitrate yet to approximate duration from
> bytes
>
> Any ideas what can be the problem here? Are there some known bugs involving
> UDP streaming in gstreamer 0.10.36 (and latest plugins)?

Probably these ones:
https://bugzilla.gnome.org/show_bug.cgi?id=670661
https://bugzilla.gnome.org/show_bug.cgi?id=663756

Don't know why your playbin2 autoplugs mpegtsdemux, because, iirc, tsdemux should have a better
ranking than than mpegtsdemux as of 0.10.23 (0.10.36)

Holger
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