Hallo All,
I am working on a gstreamer based application that should display a
RTSP/RTP MPEG4 stream from a Moxa Vport 351. It works with the
following pipeline
gst-launch playbin2 uri=rtsp://192.168.1.160:554/multicastStream
The rtsp part seems to work, and the RTP stream looks OK when looking at
the sequence numbers with wireshark.
but somehow gstreamer gets confused with the timestamps. The video
stream has a "clock" in it that shows the hours, minutes and seconds.
Every few seconds the display is corrupt and old data is show, which can
be seen because the clock jumps back a second or so.
With debugging enabled ffmpeg also reports endless errors like;
0:00:06.861877897 2297 0x824df78 ERROR ffmpeg :0::
warning: first frame is no keyframe
0:00:06.958982702 2297 0x824df78 ERROR ffmpeg :0::
header damaged
0:00:06.959167991 2297 0x824df78 WARN ffmpeg
gstffmpegdec.c:2259:gst_ffmpegdec_frame:<ffdec_mpeg40> ffdec_mpeg4:
decoding error (len: -1, have_data: 0)
0:00:07.069453665 2297 0x824df78 ERROR ffmpeg :0::
header damaged
0:00:07.069633157 2297 0x824df78 WARN ffmpeg
gstffmpegdec.c:2259:gst_ffmpegdec_frame:<ffdec_mpeg40> ffdec_mpeg4:
decoding error (len: -1, have_data: 0)
0:00:07.365365037 2297 0x824df78 ERROR ffmpeg :0::
header damaged
What I also noticed is the QOS events that seem to also come endlessly
and seem to have big and ever changing diffs.
gstevent.c:847:gst_event_new_qos: creating qos proportion 20.354596,
diff 75293916, timestamp 0:00:20.718690461
gstevent.c:847:gst_event_new_qos: creating qos proportion 16.779574,
diff 91543615, timestamp 0:00:20.818613705
gstevent.c:847:gst_event_new_qos: creating qos proportion 16.291862,
diff 38436128, timestamp 0:00:20.918632185
gstevent.c:847:gst_event_new_qos: creating qos proportion 15.497463,
diff -16850580, timestamp 0:00:21.018442293
gstevent.c:847:gst_event_new_qos: creating qos proportion 14.509505,
diff -77404486, timestamp 0:00:21.118452403
gstevent.c:847:gst_event_new_qos: creating qos proportion 13.412689,
diff -93598613, timestamp 0:00:21.218393215
gstevent.c:847:gst_event_new_qos: creating qos proportion 9.915291, diff
238645734, timestamp 0:00:21.318412354
Anny idea where I should start looking ? I already tried the latest GIT
sources but the result is the same.
Any help is welcome cause i a really stuck with this problem.
- Erwin
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