[Webkit-unassigned] [Bug 203907] [GStreamer] Twitter video freezes

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Nov 7 07:39:19 PST 2019


https://bugs.webkit.org/show_bug.cgi?id=203907

--- Comment #4 from Philippe Normand <pnormand at igalia.com> ---
After removing my GStreamer registry cache I can reproduce the problem... which is a bug in openh264:

0:00:00.401688992   257 0x5617bda024f0 WARN                 tsdemux tsdemux.c:2402:gst_ts_demux_queue_data: CONTINUITY: Mismatch packet 0, stream 2
0:00:00.418652145   257 0x5617bda024f0 WARN                 tsdemux tsdemux.c:2402:gst_ts_demux_queue_data: CONTINUITY: Mismatch packet 0, stream 4
0:00:01.447068389   257 0x5617bda024f0 WARN                 tsdemux tsdemux.c:2402:gst_ts_demux_queue_data: CONTINUITY: Mismatch packet 0, stream 8
0:00:01.498072192   257 0x5617bda024f0 WARN                 tsdemux tsdemux.c:2402:gst_ts_demux_queue_data: CONTINUITY: Mismatch packet 0, stream 0
0:00:03.300621381   257 0x5617bd9f58f0 WARN             openh264dec :0::<openh264dec0> [OpenH264] this = 0x0x7f8e64065440, Warning:referencing pictures lost due frame gaps exist, prev_frame_num: 14, curr_frame_num: 1
0:00:03.322809811   257 0x5617bd9f58f0 ERROR            openh264dec :0::<openh264dec0> [OpenH264] this = 0x0x7f8e64065440, Error:Ref Picture for B-Slice is lost, B-Slice decoding cannot be continued!
0:00:03.322859048   257 0x5617bd9f58f0 WARN             openh264dec :0::<openh264dec0> [OpenH264] this = 0x0x7f8e64065440, Warning:DecodeCurrentAccessUnit() failed (394291) in frame: 2 uiDId: 0 uiQId: 0
0:00:03.327560063   257 0x5617bd9f58f0 WARN             openh264dec :0::<openh264dec0> [OpenH264] this = 0x0x7f8e64065440, Warning:parse_nal(), no exist Sequence Parameter Sets ahead of sequence when try to decode NAL(type:1).
0:00:04.239162286   257 0x5617bda024f0 WARN                 tsdemux tsdemux.c:2402:gst_ts_demux_queue_data: CONTINUITY: Mismatch packet 0, stream 10

0:00:04.239582644   257 0x5617bda024f0 WARN                 tsdemux tsdemux.c:2402:gst_ts_demux_queue_data: CONTINUITY: Mismatch packet 0, stream 1

Reproducible with gst-play-1.0 <m3u8 url>

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