hello there,
i am currently setting up a streaming server for remote studios to
broadcast through our infrastructure.
the streaming part is done with open broadcast encoder (
https://github.com/kierank/broadcastencoder ) which generates a X264
udp or rtp stream.

on the other end i want to use melt to catch the stream and output it
to SDI or SDL for the moment.
that works fine when i set up OBE with udp.
melt udp://224.224.224.224:3000 shows the stream

but it doesn't work with the rtp stream. i've tried version 0.7.4 as
well as todays git. both compiled with the melted build scripts.
ffplay complains a little bit but plays the stream almost instantly.
melt quits with a Segmentation Fault, so i guess it might be some
additional integrity check from mlt that causes the problem?

any idea what this could be? i've attached the outputs of ffplay and melt.

greetings
stefan

output of ffplay:

./ffplay rtp://192.168.1.132:3000
ffplay version N-30686-g677a831, Copyright (c) 2003-2011 the FFmpeg developers
  built on Sep 12 2011 17:32:23 with gcc 4.4.5
  configuration: --prefix=/home/hatsch/melted/20110912 --disable-doc
--disable-ffserver --enable-gpl --enable-version3 --enable-shared
--enable-debug --enable-pthreads --enable-runtime-cpudetect
--enable-libtheora --enable-libvorbis --enable-libmp3lame
--enable-libx264
  libavutil    51. 16. 0 / 51. 16. 0
  libavcodec   53. 13. 0 / 53. 13. 0
  libavformat  53. 12. 0 / 53. 12. 0
  libavdevice  53.  3. 0 / 53.  3. 0
  libavfilter   2. 39. 0 /  2. 39. 0
  libswscale    2.  1. 0 /  2.  1. 0
  libpostproc  51.  2. 0 / 51.  2. 0
[NULL @ 0x953c720] non-existing PPS referenced
[h264 @ 0x953c720] non-existing PPS 0 referenced
[h264 @ 0x953c720] decode_slice_header error
[h264 @ 0x953c720] no frame!
[h264 @ 0x953c720] non-existing PPS referenced
[h264 @ 0x953c720] non-existing PPS 0 referenced
[h264 @ 0x953c720] decode_slice_header error
[h264 @ 0x953c720] no frame!
[h264 @ 0x953c720] non-existing PPS referenced
[h264 @ 0x953c720] non-existing PPS 0 referenced
[h264 @ 0x953c720] decode_slice_header error
[h264 @ 0x953c720] no frame!
[h264 @ 0x953c720] Missing reference picture
    Last message repeated 1 times
[h264 @ 0x953c720] mmco: unref short failure
    Last message repeated 2 times
[rtp @ 0x953ea60] max_analyze_duration 5000000 reached at 5000000
[rtp @ 0x953ea60] Estimating duration from bitrate, this may be
inaccurate
Input #0, rtp, from 'rtp://192.168.1.132:3000':
  Duration: N/A, start: 10.000000, bitrate: N/A
  Program 1
    Stream #0.0: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p,
720x576 [SAR 1:1 DAR 5:4], 25.40 fps, 25 tbr, 90k tbn, 50 tbc
    Stream #0.1: Audio: mp3 ([4][0][0][0] / 0x0004), 0 channels
Invalid sample rate or channel count
[h264 @ 0x953c720] mmco: unref short failureq=   29KB sq=    0B f=0/0
[rtp @ 0x953ea60] Continuity check failed for pid 49 expected 2 got 8
[rtp @ 0x953ea60] Continuity check failed for pid 0 expected 2 got 3


verbose output of melt (also tried without the profile)

./melt -profile dv_pal  rtp://192.168.1.132:3000 -verbose
[rtp @ 0x8f1ec40] SDP:
v=0
c=IN IP4 192.168.1.132
m=application 3000 RTP/AVP 33

[NULL @ 0x8f236a0] non-existing PPS referenced
[h264 @ 0x8f236a0] non-existing PPS 0 referenced
[h264 @ 0x8f236a0] decode_slice_header error
[h264 @ 0x8f236a0] no frame!
[h264 @ 0x8f236a0] non-existing PPS referenced
[h264 @ 0x8f236a0] non-existing PPS 0 referenced
[h264 @ 0x8f236a0] decode_slice_header error
[h264 @ 0x8f236a0] no frame!
[h264 @ 0x8f236a0] non-existing PPS referenced
[h264 @ 0x8f236a0] non-existing PPS 0 referenced
[h264 @ 0x8f236a0] decode_slice_header error
[h264 @ 0x8f236a0] no frame!
[h264 @ 0x8f236a0] non-existing PPS referenced
[h264 @ 0x8f236a0] non-existing PPS 0 referenced
[h264 @ 0x8f236a0] decode_slice_header error
[h264 @ 0x8f236a0] no frame!
[h264 @ 0x8f236a0] non-existing PPS referenced
[h264 @ 0x8f236a0] non-existing PPS 0 referenced
[h264 @ 0x8f236a0] decode_slice_header error
[h264 @ 0x8f236a0] no frame!
[h264 @ 0x8f236a0] non-existing PPS referenced
[h264 @ 0x8f236a0] non-existing PPS 0 referenced
[h264 @ 0x8f236a0] decode_slice_header error
[h264 @ 0x8f236a0] no frame!
[h264 @ 0x8f236a0] non-existing PPS referenced
[h264 @ 0x8f236a0] non-existing PPS 0 referenced
[h264 @ 0x8f236a0] decode_slice_header error
[h264 @ 0x8f236a0] no frame!
[h264 @ 0x8f236a0] non-existing PPS referenced
[h264 @ 0x8f236a0] non-existing PPS 0 referenced
[h264 @ 0x8f236a0] decode_slice_header error
[h264 @ 0x8f236a0] no frame!
[h264 @ 0x8f236a0] non-existing PPS referenced
[h264 @ 0x8f236a0] non-existing PPS 0 referenced
[h264 @ 0x8f236a0] decode_slice_header error
[h264 @ 0x8f236a0] no frame!
[h264 @ 0x8f236a0] non-existing PPS referenced
[h264 @ 0x8f236a0] non-existing PPS 0 referenced
[h264 @ 0x8f236a0] decode_slice_header error
[h264 @ 0x8f236a0] no frame!
[h264 @ 0x8f236a0] non-existing PPS referenced
[h264 @ 0x8f236a0] non-existing PPS 0 referenced
[h264 @ 0x8f236a0] decode_slice_header error
[h264 @ 0x8f236a0] no frame!
[rtp @ 0x8f1ec40] max_analyze_duration 5000000 reached at 5000000
[rtp @ 0x8f1ec40] Estimating duration from bitrate, this may be inaccurate
[producer avformat] audio: total_streams 1 max_stream 1 total_channels
0 max_channels 0
+-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+
|1=-10| |2= -5| |3= -2| |4= -1| |5=  0| |6=  1| |7=  2| |8=  5| |9= 10|
+-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+ +-----+
+---------------------------------------------------------------------+
|               H = back 1 minute,  L = forward 1 minute              |
|                 h = previous frame,  l = next frame                 |
|           g = start of clip, j = next clip, k = previous clip       |
|                0 = restart, q = quit, space = play                  |
+---------------------------------------------------------------------+
[h264 @ 0x8f236a0] mmco: unref short failure
Unsupported audio resampling. Allowed output channels for 0 input
channel:
[filter resample] SRC ratio outside [1/256, 256] range. 0,0,48000
Gleitkomma-Ausnahme        0

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