Debugging gstreamer-related issue

[Florian Echtler]

No ideas? Anyone? Are there any generic gstreamer debugging instructions 
somewhere, e.g. such as "how do I find out what pipeline totem is trying 
to execute"?

Thanks,
Florian

On 08.01.2013 23:44, Florian Echtler wrote:
> Hello everyone,
>
> I'm using Ubuntu 12.04 and would like to use gnome-dvb-daemon to watch
> digital broadcast TV with totem. Recording works, and when I select a
> channel in totem, the "Lock" LED on the tuner lights up after a few
> seconds. However, I'm getting just a black picture, and judging by the
> debug output, it's a gstreamer-related issue (see below) - I'd say the
> mpegtsdemux plugin is to blame...
>
> My package versions are:
>
> gstreamer0.10-plugins-bad     0.10.22.3-2ubuntu2.1
> gstreamer0.10-plugins-base    0.10.36-1ubuntu0.1
> gstreamer0.10-plugins-good    0.10.31-1ubuntu1
> gstreamer0.10-plugins-ugly    0.10.18.3-1ubuntu1
>
> Unfortunately, I haven't been able to find any related bug report; it
> may well be that some Ubuntu patch is to blame. I'd like to track this
> bug down, but I'm currently at a bit of a loss where to start.
>
> So, two questions: does anybody happen to have an idea what the reason
> for this bug is? And if not, can someone give me some pointers how to
> start debugging this?
>
> And here's the debug output:
>
> -----------------------------------------------------------------------
> $ totem --gst-debug-level=2
> 0:00:13.236788430  8155 0xb939b460 WARN         rtpjitterbuffer
> rtpjitterbuffer.c:458:calculate_skew: delta - skew: 0:00:01.004277222
> too big, reset skew
> 0:00:14.245935817  8155 0xb939b460 WARN         rtpjitterbuffer
> rtpjitterbuffer.c:458:calculate_skew: delta - skew: 0:00:01.009167781
> too big, reset skew
> 0:00:14.251067057  8155 0xb391c860 WARN                 default
> descriptions.c:988:gst_pb_utils_get_codec_description: No description
> available for media type: application/x-mpegts-private-section
> 0:00:14.251205133  8155 0xb391c860 WARN            uridecodebin
> gsturidecodebin.c:874:unknown_type_cb:<uridecodebin0> warning: No
> decoder available for type 'application/x-mpegts-private-section'.
> 0:00:14.251263241  8155 0xb91e6100 WARN                   totem
> bacon-video-widget-gst-0.10.c:2196:bvw_bus_message_cb: Warning message:
> warning message from element 'uridecodebin0': GstMessageWarning,
> gerror=(GError)NULL, debug=(string)"gsturidecodebin.c\(874\):\
> unknown_type_cb\ \(\):\ /GstPlayBin2:play/GstURIDecodeBin:uridecodebin0";
> 0:00:14.251977856  8155 0xb391c860 WARN                 default
> descriptions.c:988:gst_pb_utils_get_codec_description: No description
> available for media type: private/teletext
> 0:00:14.252085202  8155 0xb391c860 WARN            uridecodebin
> gsturidecodebin.c:874:unknown_type_cb:<uridecodebin0> warning: No
> decoder available for type 'private/teletext'.
> 0:00:14.252135837  8155 0xb91e6100 WARN                   totem
> bacon-video-widget-gst-0.10.c:2196:bvw_bus_message_cb: Warning message:
> warning message from element 'uridecodebin0': GstMessageWarning,
> gerror=(GError)NULL, debug=(string)"gsturidecodebin.c\(874\):\
> unknown_type_cb\ \(\):\ /GstPlayBin2:play/GstURIDecodeBin:uridecodebin0";
> 0:00:14.257291449  8155 0xa9d3a090 WARN             mpegtsdemux
> gstmpegtsdemux.c:3104:gst_mpegts_demux_src_pad_query:<mpegtsdemux0>
> unsupported query format or no bitrate yet to approximate duration from
> bytes
> 0:00:14.258974066  8155 0xa9d3a090 WARN             mpegtsdemux
> gstmpegtsdemux.c:3104:gst_mpegts_demux_src_pad_query:<mpegtsdemux0>
> unsupported query format or no bitrate yet to approximate duration from
> bytes
> 0:00:14.259070238  8155 0xa9d3a090 WARN             mpegtsdemux
> gstmpegtsdemux.c:3104:gst_mpegts_demux_src_pad_query:<mpegtsdemux0>
> unsupported query format or no bitrate yet to approximate duration from
> bytes
> 0:00:14.259767673  8155 0xa9d3a090 WARN             mpegtsdemux
> gstmpegtsdemux.c:3104:gst_mpegts_demux_src_pad_query:<mpegtsdemux0>
> unsupported query format or no bitrate yet to approximate duration from
> bytes
> 0:00:14.260856081  8155 0xa9d3a180 WARN             mpegtsdemux
> gstmpegtsdemux.c:3104:gst_mpegts_demux_src_pad_query:<mpegtsdemux0>
> unsupported query format or no bitrate yet to approximate duration from
> bytes
> 0:00:14.261391205  8155 0xa9d3a090 WARN             mpegtsdemux
> gstmpegtsdemux.c:3104:gst_mpegts_demux_src_pad_query:<mpegtsdemux0>
> unsupported query format or no bitrate yet to approximate duration from
> bytes
> 0:00:14.284157715  8155 0xa9d3a180 WARN             mpegtsdemux
> gstmpegtsdemux.c:3104:gst_mpegts_demux_src_pad_query:<mpegtsdemux0>
> unsupported query format or no bitrate yet to approximate duration from
> bytes
> 0:00:15.257781251  8155 0xb939b460 WARN         rtpjitterbuffer
> rtpjitterbuffer.c:458:calculate_skew: delta - skew: 0:00:01.011821129
> too big, reset skew
> 0:00:16.273755204  8155 0xb939b460 WARN         rtpjitterbuffer
> rtpjitterbuffer.c:458:calculate_skew: delta - skew: 0:00:01.015965991
> too big, reset skew
> 0:00:17.145391605  8155 0xb91e6100 WARN                   totem
> bacon-video-widget-gst-0.10.c:1697:bvw_handle_element_message: Unhandled
> element message application/x-rtp-source-sdes from rtpsession0: element
> message from element 'rtpsession0': application/x-rtp-source-sdes,
> cname=(string)"user3608340773\@host-f00948b8", tool=(string)GStreamer;
> 0:00:17.278950207  8155 0xb939b460 WARN         rtpjitterbuffer
> rtpjitterbuffer.c:458:calculate_skew: delta - skew: 0:00:01.005204013
> too big, reset skew
> 0:00:17.621670611  8155 0xa9d3a180 WARN             mpegtsdemux
> gstmpegtsdemux.c:3104:gst_mpegts_demux_src_pad_query:<mpegtsdemux0>
> unsupported query format or no bitrate yet to approximate duration from
> bytes
> -----------------------------------------------------------------------
>
> Thanks!
> Florian


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