[gstreamer-bugs] [Bug 595161] [mpegtsdemux] Internal dataflow problem with some streams.

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=595161
  GStreamer | gst-plugins-bad | 0.10.x

--- Comment #2 from Krzysztof Adamski <krzysztof.adamski at korbank.pl> 2009-09-15 09:26:03 UTC ---
I have compared two streams (failing one and good one) and it seams they differ
in that failing stream does not provide PTS:
DEBUG          mpegpesfilter gstpesfilter.c:298:gst_pes_filter_parse:
header_data_length: 0, flags 0x00

which means it's value is set to -1:
DEBUG            mpegtsdemux
gstmpegtsdemux.c:1024:gst_mpegts_demux_data_cb:<mpegtsdemux0> setting PTS to
(18446744073709551615) time: 99:99:99.999999999 on buffer 0xb6502df0 first
buffer: 1 base_time: 0:00:00.000000000

Since no base PCR or last PCR is set:
DEBUG            mpegtsdemux
gstmpegtsdemux.c:769:gst_mpegts_demux_send_new_segment:<mpegtsdemux0> no base
PCR, using last PCR 18446744073709551615
DEBUG            mpegtsdemux
gstmpegtsdemux.c:776:gst_mpegts_demux_send_new_segment:<mpegtsdemux0> no last
PCR, using PTS 18446744073709551615

Time is set to -1:
DEBUG            mpegtsdemux
gstmpegtsdemux.c:785:gst_mpegts_demux_send_new_segment:<mpegtsdemux0> segment
PTS to (18446744073709551615) time: 18446744073709551615

and it is then passed to gst_event_new_new_segment, which causes assertion
fail:
GStreamer-CRITICAL **: gst_event_new_new_segment_full: assertion `start != -1'
failed

The problem is, I don't know what should be done in such case since I'm not
MPEG expert so I can't fix it myself.

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