gst-launch output

Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
0:00:00.040271189 23418  0x959a000 WARN                 qtdemux qtdemux_types.c:191:qtdemux_type_get: unknown QuickTime node type avc1
0:00:00.040312885 23418  0x959a000 WARN                 qtdemux qtdemux_types.c:191:qtdemux_type_get: unknown QuickTime node type avcC
0:00:00.040338526 23418  0x959a000 WARN                 qtdemux qtdemux.c:8854:qtdemux_parse_tree:<qtdemux0> Can't handle datetimes before 1970 yet, please file a bug at http://bugzilla.gnome.org
0:00:00.040453021 23418  0x959a000 WARN                 qtdemux qtdemux.c:7044:qtdemux_parse_trak:<qtdemux0> unknown version 00000000
0:00:00.134904816 23418  0x959a6c0 WARN      playsinkconvertbin gstplaysinkconvertbin.c:481:gst_play_sink_convert_bin_cache_converter_caps:<GstPlaySinkAudioConvert@0xb57cb090> No conversion elements
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
0:00:00.314917400 23418  0x9595a40 WARN                     bin gstbin.c:2395:gst_bin_do_latency_func:<playbin20> did not really configure latency of 0:00:00.000000000
New clock: GstPulseSinkClock