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• Stream RTP to FFMPEG using SDP

  9 avril 2021, par Johnathan Kanarek

  I get RTP stream from WebRTC server (I used mediasoup) using node.js and I get the decrypted RTP packets raw data from the stream.
I want to forward this RTP data to ffmpeg and from there I can save it to file, or push it as RTMP stream to other media servers.
I guess that the best way would be to create SDP file that describes both the audio and video streams and send the packets through new sockets.

  



  The ffmpeg command is :

  



  ffmpeg -loglevel debug -protocol_whitelist file,crypto,udp,rtp -re -vcodec libvpx -acodec opus -i test.sdp -vcodec libx264 -acodec aac -y output.mp4

  



  I tried to send the packets through UDP :

  



  v=0
o=mediasoup 7199daf55e496b370e36cd1d25b1ef5b9dff6858 0 IN IP4 192.168.193.182
s=7199daf55e496b370e36cd1d25b1ef5b9dff6858
c=IN IP4 192.168.193.182
t=0 0
m=audio 33301 RTP/AVP 111
a=rtpmap:111 /opus/48000
a=fmtp:111 minptime=10;useinbandfec=1
a=rtcp-fb:111 transport-cc
a=sendrecv
m=video 33302 RTP/AVP 100
a=rtpmap:100 /VP8/90000
a=rtcp-fb:100 ccm fir
a=rtcp-fb:100 nack
a=rtcp-fb:100 nack pli
a=rtcp-fb:100 goog-remb
a=rtcp-fb:100 transport-cc
a=sendrecv


  



  But I always get (removed the boring parts) :

  



  Opening an input file: test.sdp.

[sdp @ 0x103dea0]
Format sdp probed with size=2048 and score=50
[sdp @ 0x103dea0] audio codec set to: (null)
[sdp @ 0x103dea0] audio samplerate set to: 44100
[sdp @ 0x103dea0] audio channels set to: 1
[sdp @ 0x103dea0] video codec set to: (null)
[udp @ 0x10402e0] end receive buffer size reported is 131072
[udp @ 0x10400c0] end receive buffer size reported is 131072
[sdp @ 0x103dea0] setting jitter buffer size to 500
[udp @ 0x1040740] bind failed: Address already in use
[AVIOContext @ 0x1046980] Statistics: 473 bytes read, 0 seeks
test.sdp: Invalid data found when processing input


  



  Note that I get it even if I don't open socket at all or send anything to this port, as if the ffmpeg itself tries to open these ports more than once.

  



  I tried also to open two (video and audio) TCP servers and define SDP with TCP :

  



  v=0
o=mediasoup 7199daf55e496b370e36cd1d25b1ef5b9dff6858 0 IN IP4 192.168.193.182
s=7199daf55e496b370e36cd1d25b1ef5b9dff6858
c=IN IP4 192.168.193.182
t=0 0
m=audio 33301 TCP 111
a=rtpmap:111 /opus/48000
a=fmtp:111 minptime=10;useinbandfec=1
a=rtcp-fb:111 transport-cc
a=setup:active
a=connection:new
a=sendrecv
m=video 33302 TCP 100
a=rtpmap:100 /VP8/90000
a=rtcp-fb:100 ccm fir
a=rtcp-fb:100 nack
a=rtcp-fb:100 nack pli
a=rtcp-fb:100 goog-remb
a=rtcp-fb:100 transport-cc
a=setup:active
a=connection:new
a=sendrecv


  



  However I don't see any incoming connection into my TCP servers and I get the following from ffmpeg :

  



  Opening an input file: test.sdp.

[sdp @ 0xdddea0]
Format sdp probed with size=2048 and score=50

[sdp @ 0xdddea0]
audio codec set to: (null)

[sdp @ 0xdddea0]
audio samplerate set to: 44100
[sdp @ 0xdddea0] audio channels set to: 1
[sdp @ 0xdddea0] video codec set to: (null)
[udp @ 0xde02e0] end receive buffer size reported is 131072
[udp @ 0xde00c0] end receive buffer size reported is 131072
[sdp @ 0xdddea0] setting jitter buffer size to 500
[udp @ 0xde0740] end receive buffer size reported is 131072

[udp @ 0xde0180] end receive buffer size reported is 131072
[sdp @ 0xdddea0] setting jitter buffer size to 500
[sdp @ 0xdddea0] Before avformat_find_stream_info() pos: 593 bytes read:593 seeks:0 nb_streams:2
[libvpx @ 0xdeea80] v1.3.0
[libvpx @ 0xdeea80] --target=x86_64-linux-gcc --enable-pic --disable-install-srcs --as=nasm --enable-shared --prefix=/usr --libdir=/usr/lib64

[sdp @ 0xdddea0] Could not find codec parameters for stream 1 (Video: vp8, 1 reference frame, none): unspecified size
Consider increasing the value for the 'analyzeduration' and 'probesize' options
[sdp @ 0xdddea0] After avformat_find_stream_info() pos: 593 bytes read:593 seeks:0 frames:0
Input #0, sdp, from 'test.sdp':
  Metadata:
    title           : 7199daf55e496b370e36cd1d25b1ef5b9dff6858
  Duration: N/A, bitrate: N/A
    Stream #0:0, 0, 1/90000: Audio: opus, 48000 Hz, mono, fltp
    Stream #0:1, 0, 1/90000: Video: vp8, 1 reference frame, none, 90k tbr, 90k tbn, 90k tbc
Successfully opened the file.
Parsing a group of options: output file output.mp4.
Successfully parsed a group of options.
Opening an output file: output.mp4.
[file @ 0xde3660] Setting default whitelist 'file,crypto'
Successfully opened the file.

detected 1 logical cores
[graph 0 input from stream 0:0 @ 0xde3940] Setting 'time_base' to value '1/48000'
[graph 0 input from stream 0:0 @ 0xde3940] Setting 'sample_rate' to value '48000'
[graph 0 input from stream 0:0 @ 0xde3940] Setting 'sample_fmt' to value 'fltp'
[graph 0 input from stream 0:0 @ 0xde3940] Setting 'channel_layout' to value '0x4'
[graph 0 input from stream 0:0 @ 0xde3940] tb:1/48000 samplefmt:fltp samplerate:48000 chlayout:0x4
[audio format for output stream 0:0 @ 0xe37900] Setting 'sample_fmts' to value 'fltp'
[audio format for output stream 0:0 @ 0xe37900] Setting 'sample_rates' to value '96000|88200|64000|48000|44100|32000|24000|22050|16000|12000|11025|8000|7350'
[AVFilterGraph @ 0xde0220] query_formats: 4 queried, 9 merged, 0 already done, 0 delayed

Output #0, mp4, to 'output.mp4':

  Metadata:

    title           :
7199daf55e496b370e36cd1d25b1ef5b9dff6858


    encoder         :
Lavf57.56.100


    Stream #0:0
, 0, 1/48000
: Audio: aac (LC) ([64][0][0][0] / 0x0040), 48000 Hz, mono, fltp, delay 1024, 69 kb/s


    Metadata:

      encoder         :
Lavc57.64.100 aac


Stream mapping:

  Stream #0:0 -> #0:0 (opus (native) -> aac (native))
Press [q] to stop, [?] for help
cur_dts is invalid (this is harmless if it occurs once at the start per stream)

test.sdp: Connection timed out
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
cur_dts is invalid (this is harmless if it occurs once at the start per stream)
[output stream 0:0 @ 0xde3b40] EOF on sink link output stream 0:0:default.
No more output streams to write to, finishing.
[aac @ 0xde2b00] Trying to remove 1024 samples, but the queue is empty
[aac @ 0xde2b00] Trying to remove 1024 more samples than there are in the queue
[mp4 @ 0xe6a540] Timestamps are unset in a packet for stream 0. This is deprecated and will stop working in the future. Fix your code to set the timestamps properly
[mp4 @ 0xe6a540] Encoder did not produce proper pts, making some up.
[aac @ 0xde2b00] Trying to remove 1024 samples, but the queue is empty
[aac @ 0xde2b00] Trying to remove 1024 more samples than there are in the queue
size=       1kB time=00:00:00.04 bitrate= 157.9kbits/s speed=0.00426x
video:0kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 3268.000000%
Input file #0 (test.sdp):
  Input stream #0:0 (audio): 0 packets read (0 bytes); 0 frames decoded (0 samples);
  Input stream #0:1 (video): 0 packets read (0 bytes);
  Total: 0 packets (0 bytes) demuxed
Output file #0 (output.mp4):
  Output stream #0:0 (audio): 0 frames encoded (0 samples); 2 packets muxed (25 bytes);
  Total: 2 packets (25 bytes) muxed
0 frames successfully decoded, 0 decoding errors
[AVIOContext @ 0xde37a0] Statistics: 30 seeks, 25 writeouts
[aac @ 0xde2b00] Qavg: 47249.418

[AVIOContext @ 0xde6980] Statistics: 593 bytes read, 0 seeks


  



  Note to the "Connection timed out" in the log above.

  



  I guess that both my SDPs are wrong, any suggestions ?

  



  Alternatives to SDP are also most welcomed.

  


• Cutting with ffmpeg a video (recorded with Kodi) gives no image

  1er octobre 2017, par Laure

  I am trying to cut videos I get from a IPTV add-on in Kodi. The original video can be watched with VLC, Mplayer, xine, etc, but after being copied there is no image. According to mediainfo there is a video stream but nothing can be seen. The command I use is :

  ffmpeg -y -i test-1.mpeg  -scodec copy -vcodec copy -c:a copy -map 0 -ss 00:00:10.000 -t 00:00:10.000 test-1-cut.mpeg

  I suppose there is something wrong with the original videos recorded by Kodi, but they give no problem with any player. A short example video is this one :

  https://drive.google.com/open?id=0B0WC80aT-4WrSDNENzhxRUxkOXc

  The output with the -report option is this one :

  ffmpeg started on 2017-09-10 at 02:27:38
  
  Report written to "ffmpeg-20170910-022738.log"
  
  Command line:
  
  ffmpeg -y -report -i test-1.mpeg -scodec copy -vcodec copy -c:a copy -map 0 -ss 00:00:10.000 -t 00:00:10.000 test-1-cut.mpeg
  
  ffmpeg version 2.8.11-0ubuntu0.16.04.1 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.4) 20160609
  
    configuration: --prefix=/usr --extra-version=0ubuntu0.16.04.1 --build-suffix=-ffmpeg --toolchain=hardened --libdir=/usr/lib/i386-linux-gnu --incdir=/usr/include/i386-linux-gnu --cc=cc --cxx=g++ --enable-gpl --enable-shared --disable-stripping --disable-decoder=libopenjpeg --disable-decoder=libschroedinger --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxvid --enable-libzvbi --enable-openal --enable-opengl --enable-x11grab --enabl  libavutil      54. 31.100 / 54. 31.100
  
    libavcodec     56. 60.100 / 56. 60.100
  
    libavformat    56. 40.101 / 56. 40.101
  
    libavdevice    56.  4.100 / 56.  4.100
  
    libavfilter     5. 40.101 /  5. 40.101
  
    libavresample   2.  1.  0 /  2.  1.  0
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  2.101 /  1.  2.101
  
    libpostproc    53.  3.100 / 53.  3.100
  
  Splitting the commandline.
  
  Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
  
  Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.
  
  Reading option '-i' ... matched as input url with argument 'test-1.mpeg'.
  
  Reading option '-scodec' ... matched as option 'scodec' (force subtitle codec ('copy' to copy stream)) with argument 'copy'.
  
  Reading option '-vcodec' ... matched as option 'vcodec' (force video codec ('copy' to copy stream)) with argument 'copy'.
  
  Reading option '-c:a' ... matched as option 'c' (codec name) with argument 'copy'.
  
  Reading option '-map' ... matched as option 'map' (set input stream mapping) with argument '0'.
  
  Reading option '-ss' ... matched as option 'ss' (set the start time offset) with argument '00:00:10.000'.
  
  Reading option '-t' ... matched as option 't' (record or transcode "duration" seconds of audio/video) with argument '00:00:10.000'.
  
  Reading option 'test-1-cut.mpeg' ... matched as output url.
  
  Finished splitting the commandline.
  
  Parsing a group of options: global .
  
  Applying option y (overwrite output files) with argument 1.
  
  Applying option report (generate a report) with argument 1.
  
  Successfully parsed a group of options.
  
  Parsing a group of options: input url test-1.mpeg.
  
  Successfully parsed a group of options.
  
  Opening an input file: test-1.mpeg.
  
  [mpegts @ 0x8292960] Format mpegts probed with size=2048 and score=100
  
  [mpegts @ 0x8292960] stream=0 stream_type=1b pid=65 prog_reg_desc=
  
  [mpegts @ 0x8292960] stream=1 stream_type=3 pid=c9 prog_reg_desc=
  
  [mpegts @ 0x8292960] stream=2 stream_type=3 pid=ca prog_reg_desc=
  
  [mpegts @ 0x8292960] stream=3 stream_type=6 pid=191 prog_reg_desc=
  
  [mpegts @ 0x8292960] Before avformat_find_stream_info() pos: 0 bytes read:32768 seeks:0
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 8 got 14
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 8 got 14
  
  [h264 @ 0x8296880] Frame num gap 190 185
  
  [h264 @ 0x8296880] Frame num gap 190 186
  
  [h264 @ 0x8296880] Frame num gap 190 187
  
  [h264 @ 0x8296880] Frame num gap 190 188
  
  [h264 @ 0x8296880] mmco: unref short failure
  
  [h264 @ 0x8296880] no picture ooo
  
  [h264 @ 0x8296880] Increasing reorder buffer to 2
  
  [h264 @ 0x8296880] no picture ooo
  
  [h264 @ 0x8296880] Increasing reorder buffer to 3
  
  [h264 @ 0x8296880] no picture ooo
  
  [h264 @ 0x8296880] no picture ooo
  
  [h264 @ 0x8296880] no picture ooo
  
  [h264 @ 0x8296880] no picture ooo
  
  [h264 @ 0x8296880] no picture ooo
  
  [h264 @ 0x8296880] no picture 
  
  [h264 @ 0x8296880] mmco: unref short failure
  
  [h264 @ 0x8296880] no picture 
  
  [h264 @ 0x8296880] no picture 
  
  [mpegts @ 0x8292960] max_analyze_duration 5000000 reached at 5000000 microseconds st:0
  
  [NULL @ 0x8298500] start time for stream 3 is not set in estimate_timings_from_pts
  
  [mpegts @ 0x8292960] PES packet size mismatch
  
  [mpegts @ 0x8292960] After avformat_find_stream_info() pos: 0 bytes read:4378768 seeks:2 frames:529
  
  Input #0, mpegts, from 'test-1.mpeg':
  
    Duration: 00:01:21.19, start: 74380.458944, bitrate: 6510 kb/s
  
    Program 3102 
  
      Stream #0:0[0x65], 127, 1/90000: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
  
      Stream #0:1[0xc9](esp), 204, 1/90000: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 192 kb/s (clean effects)
  
      Stream #0:2[0xca](vo), 198, 1/90000: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s (clean effects)
  
      Stream #0:3[0x191](esp), 0, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
  
  Successfully opened the file.
  
  Parsing a group of options: output url test-1-cut.mpeg.
  
  Applying option scodec (force subtitle codec ('copy' to copy stream)) with argument copy.
  
  Applying option vcodec (force video codec ('copy' to copy stream)) with argument copy.
  
  Applying option c:a (codec name) with argument copy.
  
  Applying option map (set input stream mapping) with argument 0.
  
  Applying option ss (set the start time offset) with argument 00:00:10.000.
  
  Applying option t (record or transcode "duration" seconds of audio/video) with argument 00:00:10.000.
  
  Successfully parsed a group of options.
  
  Opening an output file: test-1-cut.mpeg.
  
  Successfully opened the file.
  
  [mpeg @ 0x829a0e0] VBV buffer size not set, using default size of 130KB
  
  If you want the mpeg file to be compliant to some specification
  
  Like DVD, VCD or others, make sure you set the correct buffer size
  
  Output #0, mpeg, to 'test-1-cut.mpeg':
  
    Metadata:
  
      encoder         : Lavf56.40.101
  
      Stream #0:0, 0, 1/90000: Video: h264 ([27][0][0][0] / 0x001B), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 25 fps, 25 tbr, 90k tbn, 25 tbc
  
      Stream #0:1(esp), 0, 1/90000: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, 192 kb/s (clean effects)
  
      Stream #0:2(vo), 0, 1/90000: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, 128 kb/s (clean effects)
  
      Stream #0:3(esp), 0, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (copy)
  
    Stream #0:2 -> #0:2 (copy)
  
    Stream #0:3 -> #0:3 (copy)
  
  Press [q] to stop, [?] for help
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 8 got 14
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 8 got 14
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 1 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 1 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 8 got 1
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 8 got 1
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 5 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 5 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 8 got 5
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 8 got 5
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 10 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 10 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 8 got 10
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 8 got 10
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 5 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 5 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 8 got 5
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 8 got 5
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 1 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 1 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 8 got 1
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 8 got 1
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 3 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 3 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 8 got 3
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 8 got 3
  
  frame=  231 fps=0.0 q=-1.0 size=       0kB time=00:00:10.03 bitrate=   0.0kbits/s    
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 13 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 13 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 8 got 13
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 8 got 13
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 0 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 0 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 8 got 0
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 8 got 0
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 10 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 9 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 8 got 9
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 8 got 10
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 6 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 6 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 8 got 6
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 8 got 6
  
  frame=  231 fps=231 q=-1.0 size=       0kB time=00:00:10.03 bitrate=   0.0kbits/s    
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 0 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 0 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 8 got 0
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 8 got 0
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 2 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 1 got 7
  
  [mpegts @ 0x8292960] Continuity check failed for pid 100 expected 8 got 1
  
  [mpegts @ 0x8292960] Continuity check failed for pid 0 expected 8 got 2
  
  [mpegts @ 0x8292960] PES packet size mismatch
  
  No more output streams to write to, finishing.
  
  [mpeg @ 0x829a0e0] First SCR: 0 First DTS: 45000
  
  frame=  231 fps=149 q=-1.0 Lsize=    7344kB time=00:00:10.03 bitrate=5995.5kbits/s    
  
  video:6918kB audio:391kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.483494%
  
  Input file #0 (test-1.mpeg):
  
    Input stream #0:0 (video): 2016 packets read (60807549 bytes); 
  
    Input stream #0:1 (audio): 3360 packets read (1935360 bytes); 
  
    Input stream #0:2 (audio): 3363 packets read (1291096 bytes); 
  
    Input stream #0:3 (subtitle): 0 packets read (0 bytes); 
  
    Total: 8739 packets (64034005 bytes) demuxed
  
  Output file #0 (test-1-cut.mpeg):
  
    Output stream #0:0 (video): 231 packets muxed (7083751 bytes); 
  
    Output stream #0:1 (audio): 417 packets muxed (240192 bytes); 
  
    Output stream #0:2 (audio): 417 packets muxed (160128 bytes); 
  
    Output stream #0:3 (subtitle): 0 packets muxed (0 bytes); 
  
    Total: 1065 packets (7484071 bytes) muxed
  
  0 frames successfully decoded, 0 decoding errors
  
  [AVIOContext @ 0x82f9860] Statistics: 0 seeks, 3672 writeouts
  
  [AVIOContext @ 0x829b1a0] Statistics: 70457008 bytes read, 2 seeks

  Following a suggestion from a comment, I have tried a static build of the last version of ffmpeg. The resulting file again has a video stream but the player cannot play it. The log is the following :

  ffmpeg started on 2017-09-18 at 00:14:22
  
  Report written to "ffmpeg-20170918-001422.log"
  
  Command line:
  
  ./ffmpeg -y -report -i test-1.mpeg -scodec copy -vcodec copy -c:a copy -map 0 -ss 00:00:10.000 -t 00:00:10.000 test-1-cut.mpeg
  
  ffmpeg version N-87286-g6ce4a635ed-static http://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2017 the FFmpeg developers
  
    built with gcc 6.4.0 (Debian 6.4.0-4) 20170820
  
    configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc-6 --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gray --enable-libfribidi --enable-libass --enable-libvmaf --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-librubberband --enable-librtmp --enable-libsoxr --enable-libspeex --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxvid --enable-libzimg
  
    libavutil      55. 74.100 / 55. 74.100
  
    libavcodec     57.105.100 / 57.105.100
  
    libavformat    57. 82.100 / 57. 82.100
  
    libavdevice    57.  8.100 / 57.  8.100
  
    libavfilter     6.105.100 /  6.105.100
  
    libswscale      4.  7.103 /  4.  7.103
  
    libswresample   2.  8.100 /  2.  8.100
  
    libpostproc    54.  6.100 / 54.  6.100
  
  Splitting the commandline.
  
  Reading option '-y' ... matched as option 'y' (overwrite output files) with argument '1'.
  
  Reading option '-report' ... matched as option 'report' (generate a report) with argument '1'.
  
  Reading option '-i' ... matched as input url with argument 'test-1.mpeg'.
  
  Reading option '-scodec' ... matched as option 'scodec' (force subtitle codec ('copy' to copy stream)) with argument 'copy'.
  
  Reading option '-vcodec' ... matched as option 'vcodec' (force video codec ('copy' to copy stream)) with argument 'copy'.
  
  Reading option '-c:a' ... matched as option 'c' (codec name) with argument 'copy'.
  
  Reading option '-map' ... matched as option 'map' (set input stream mapping) with argument '0'.
  
  Reading option '-ss' ... matched as option 'ss' (set the start time offset) with argument '00:00:10.000'.
  
  Reading option '-t' ... matched as option 't' (record or transcode "duration" seconds of audio/video) with argument '00:00:10.000'.
  
  Reading option 'test-1-cut.mpeg' ... matched as output url.
  
  Finished splitting the commandline.
  
  Parsing a group of options: global .
  
  Applying option y (overwrite output files) with argument 1.
  
  Applying option report (generate a report) with argument 1.
  
  Successfully parsed a group of options.
  
  Parsing a group of options: input url test-1.mpeg.
  
  Successfully parsed a group of options.
  
  Opening an input file: test-1.mpeg.
  
  [NULL @ 0x4e6d900] Opening 'test-1.mpeg' for reading
  
  [file @ 0x4e6e1a0] Setting default whitelist 'file,crypto'
  
  [mpegts @ 0x4e6d900] Format mpegts probed with size=2048 and score=50
  
  [mpegts @ 0x4e6d900] stream=0 stream_type=1b pid=65 prog_reg_desc=
  
  [mpegts @ 0x4e6d900] stream=1 stream_type=3 pid=c9 prog_reg_desc=
  
  [mpegts @ 0x4e6d900] stream=2 stream_type=3 pid=ca prog_reg_desc=
  
  [mpegts @ 0x4e6d900] stream=3 stream_type=6 pid=191 prog_reg_desc=
  
  [mpegts @ 0x4e6d900] Before avformat_find_stream_info() pos: 0 bytes read:32768 seeks:0 nb_streams:4
  
  [mpegts @ 0x4e6d900] Continuity check failed for pid 0 expected 8 got 14
  
  [mpegts @ 0x4e6d900] Continuity check failed for pid 100 expected 8 got 14
  
  [h264 @ 0x4e72500] ct_type:0 pic_struct:3
  
  [AVBSFContext @ 0x4f23c80] nal_unit_type: 9, nal_ref_idc: 0
  
  [AVBSFContext @ 0x4f23c80] nal_unit_type: 7, nal_ref_idc: 3
  
  [AVBSFContext @ 0x4f23c80] nal_unit_type: 8, nal_ref_idc: 3
  
  [AVBSFContext @ 0x4f23c80] nal_unit_type: 6, nal_ref_idc: 0
  
  [AVBSFContext @ 0x4f23c80] nal_unit_type: 1, nal_ref_idc: 2
  
  [h264 @ 0x4e72500] nal_unit_type: 9, nal_ref_idc: 0
  
  [h264 @ 0x4e72500] nal_unit_type: 7, nal_ref_idc: 3
  
  [h264 @ 0x4e72500] nal_unit_type: 8, nal_ref_idc: 3
  
  [h264 @ 0x4e72500] nal_unit_type: 6, nal_ref_idc: 0
  
  [h264 @ 0x4e72500] nal_unit_type: 1, nal_ref_idc: 2
  
  [h264 @ 0x4e72500] ct_type:0 pic_struct:3
  
  [h264 @ 0x4e72500] Reinit context to 1920x1088, pix_fmt: yuv420p
  
  [h264 @ 0x4e72500] Frame num gap 190 185
  
  [h264 @ 0x4e72500] Frame num gap 190 186
  
  [h264 @ 0x4e72500] Frame num gap 190 187
  
  [h264 @ 0x4e72500] Frame num gap 190 188
  
  [h264 @ 0x4e72500] mmco: unref short failure
  
  [h264 @ 0x4e72500] ct_type:0 pic_struct:3
  
  [h264 @ 0x4e72500] nal_unit_type: 9, nal_ref_idc: 0
  
  [h264 @ 0x4e72500] nal_unit_type: 6, nal_ref_idc: 0
  
  [h264 @ 0x4e72500] nal_unit_type: 1, nal_ref_idc: 2
  
  [h264 @ 0x4e72500] ct_type:0 pic_struct:3
  
  [h264 @ 0x4e72500] no picture ooo
  
  [h264 @ 0x4e72500] ct_type:0 pic_struct:3
  
  [h264 @ 0x4e72500] nal_unit_type: 9, nal_ref_idc: 0
  
  [h264 @ 0x4e72500] nal_unit_type: 8, nal_ref_idc: 3
  
  [h264 @ 0x4e72500] nal_unit_type: 6, nal_ref_idc: 0
  
  [h264 @ 0x4e72500] nal_unit_type: 1, nal_ref_idc: 2
  
  [h264 @ 0x4e72500] ct_type:0 pic_struct:3
  
  [h264 @ 0x4e72500] Increasing reorder buffer to 2
  
  [h264 @ 0x4e72500] no picture ooo
  
  [h264 @ 0x4e72500] ct_type:0 pic_struct:3
  
  [h264 @ 0x4e72500] nal_unit_type: 9, nal_ref_idc: 0
  
  [h264 @ 0x4e72500] nal_unit_type: 8, nal_ref_idc: 3
  
  [h264 @ 0x4e72500] nal_unit_type: 6, nal_ref_idc: 0
  
  [h264 @ 0x4e72500] nal_unit_type: 1, nal_ref_idc: 0
  
  [h264 @ 0x4e72500] ct_type:0 pic_struct:3
  
  [h264 @ 0x4e72500] Increasing reorder buffer to 3
  
  [h264 @ 0x4e72500] no picture ooo
  
  [h264 @ 0x4e72500] ct_type:0 pic_struct:3
  
  [h264 @ 0x4e72500] nal_unit_type: 9, nal_ref_idc: 0
  
  [h264 @ 0x4e72500] nal_unit_type: 8, nal_ref_idc: 3
  
  [h264 @ 0x4e72500] nal_unit_type: 6, nal_ref_idc: 0
  
  [h264 @ 0x4e72500] nal_unit_type: 1, nal_ref_idc: 2
  
  [h264 @ 0x4e72500] ct_type:0 pic_struct:3
  
  [h264 @ 0x4e72500] no picture ooo
  
  [h264 @ 0x4e72500] ct_type:0 pic_struct:3
  
  [h264 @ 0x4e72500] nal_unit_type: 9, nal_ref_idc: 0
  
  [h264 @ 0x4e72500] nal_unit_type: 6, nal_ref_idc: 0
  
  ................. a lot of similar lines .......................
  
  [h264 @ 0x4e72500] nal_unit_type: 9, nal_ref_idc: 0
  
  [h264 @ 0x4e72500] nal_unit_type: 8, nal_ref_idc: 3
  
  [h264 @ 0x4e72500] nal_unit_type: 6, nal_ref_idc: 0
  
  [h264 @ 0x4e72500] nal_unit_type: 1, nal_ref_idc: 2
  
  [h264 @ 0x4e72500] ct_type:0 pic_struct:3
  
  [h264 @ 0x4e72500] ct_type:0 pic_struct:3
  
  [h264 @ 0x4e72500] nal_unit_type: 9, nal_ref_idc: 0
  
  [h264 @ 0x4e72500] nal_unit_type: 8, nal_ref_idc: 3
  
  [h264 @ 0x4e72500] nal_unit_type: 6, nal_ref_idc: 0
  
  [h264 @ 0x4e72500] nal_unit_type: 1, nal_ref_idc: 0
  
  [h264 @ 0x4e72500] ct_type:0 pic_struct:3
  
  [h264 @ 0x4e72500] ct_type:0 pic_struct:3
  
  .......... a lot of similar lines...........
  
  [h264 @ 0x4e72500] ct_type:0 pic_struct:3
  
  [mpegts @ 0x4e6d900] max_analyze_duration 5000000 reached at 5000000 microseconds st:0
  
  [mpegts @ 0x4e6d900] start time for stream 3 is not set in estimate_timings_from_pts
  
  [mpegts @ 0x4e6d900] PES packet size mismatch
  
  [mpegts @ 0x4e6d900] After avformat_find_stream_info() pos: 0 bytes read:4378768 seeks:2 frames:529
  
  Input #0, mpegts, from 'test-1.mpeg':
  
    Duration: 00:01:21.19, start: 74380.458944, bitrate: 6510 kb/s
  
    Program 3102 
  
      Stream #0:0[0x65], 127, 1/90000: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], 25 fps, 25 tbr, 90k tbn, 50 tbc
  
      Stream #0:1[0xc9](esp), 204, 1/90000: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 192 kb/s (clean effects)
  
      Stream #0:2[0xca](vo), 198, 1/90000: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s (clean effects)
  
      Stream #0:3[0x191](esp), 0, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
  
  Successfully opened the file.
  
  Parsing a group of options: output url test-1-cut.mpeg.
  
  Applying option scodec (force subtitle codec ('copy' to copy stream)) with argument copy.
  
  Applying option vcodec (force video codec ('copy' to copy stream)) with argument copy.
  
  Applying option c:a (codec name) with argument copy.
  
  Applying option map (set input stream mapping) with argument 0.
  
  Applying option ss (set the start time offset) with argument 00:00:10.000.
  
  Applying option t (record or transcode "duration" seconds of audio/video) with argument 00:00:10.000.
  
  Successfully parsed a group of options.
  
  Opening an output file: test-1-cut.mpeg.
  
  [file @ 0x4eb6020] Setting default whitelist 'file,crypto'
  
  Successfully opened the file.
  
  [mpeg @ 0x4ea6560] VBV buffer size not set, using default size of 130KB
  
  If you want the mpeg file to be compliant to some specification
  
  Like DVD, VCD or others, make sure you set the correct buffer size
  
  Output #0, mpeg, to 'test-1-cut.mpeg':
  
    Metadata:
  
      encoder         : Lavf57.82.100
  
      Stream #0:0, 0, 1/90000: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p(tv, bt709, top first), 1920x1080 [SAR 1:1 DAR 16:9], q=2-31, 25 fps, 25 tbr, 90k tbn, 25 tbc
  
      Stream #0:1(esp), 0, 1/90000: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 192 kb/s (clean effects)
  
      Stream #0:2(vo), 0, 1/90000: Audio: mp2 ([3][0][0][0] / 0x0003), 48000 Hz, stereo, s16p, 128 kb/s (clean effects)
  
      Stream #0:3(esp), 0, 1/90000: Subtitle: dvb_subtitle ([6][0][0][0] / 0x0006)
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (copy)
  
    Stream #0:2 -> #0:2 (copy)
  
    Stream #0:3 -> #0:3 (copy)
  
  Press [q] to stop, [?] for help
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [NULL @ 0x4e72500] nal_unit_type: 7, nal_ref_idc: 3
  
  [NULL @ 0x4e72500] nal_unit_type: 8, nal_ref_idc: 3
  
  [mpegts @ 0x4e6d900] Continuity check failed for pid 0 expected 8 got 14
  
  [mpegts @ 0x4e6d900] Continuity check failed for pid 100 expected 8 got 14
  
  [NULL @ 0x4e72500] ct_type:0 pic_struct:3
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [NULL @ 0x4e72500] ct_type:0 pic_struct:3
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  ........... a lot of similar lines .............
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [NULL @ 0x4e72500] ct_type:0 pic_struct:3
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [mpegts @ 0x4e6d900] PES packet size mismatch
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  [NULL @ 0x4e72500] ct_type:0 pic_struct:3
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  cur_dts is invalid (this is harmless if it occurs once at the start per stream)
  
  No more output streams to write to, finishing.
  
  [mpeg @ 0x4ea6560] First SCR: 0 First DTS: 45000
  
  frame=  231 fps=0.0 q=-1.0 Lsize=    7344kB time=00:00:09.99 bitrate=6019.5kbits/s speed=42.1x    
  
  video:6918kB audio:391kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.483494%
  
  Input file #0 (test-1.mpeg):
  
    Input stream #0:0 (video): 2016 packets read (60807549 bytes); 
  
    Input stream #0:1 (audio): 3360 packets read (1935360 bytes); 
  
    Input stream #0:2 (audio): 3363 packets read (1291096 bytes); 
  
    Input stream #0:3 (subtitle): 0 packets read (0 bytes); 
  
    Total: 8739 packets (64034005 bytes) demuxed
  
  Output file #0 (test-1-cut.mpeg):
  
    Output stream #0:0 (video): 231 packets muxed (7083751 bytes); 
  
    Output stream #0:1 (audio): 417 packets muxed (240192 bytes); 
  
    Output stream #0:2 (audio): 417 packets muxed (160128 bytes); 
  
    Output stream #0:3 (subtitle): 0 packets muxed (0 bytes); 
  
    Total: 1065 packets (7484071 bytes) muxed
  
  0 frames successfully decoded, 0 decoding errors
  
  [AVIOContext @ 0x4ef6300] Statistics: 0 seeks, 3672 writeouts
  
  [AVIOContext @ 0x4e6e040] Statistics: 70457008 bytes read, 2 seeks

• Mobile Analytics SDK : beta release of Piwik iOS SDK

  30 octobre 2013, par Piwik team

  Mattias Levin, a Mobile developer enthusiast from Sweden, has released the first public beta version of the official Piwik SDK for iOS !

  If you are building apps for iOS or OSX, you will be able to track your App usage with Piwik. Learn more in this blog post.

  Apps & Mobile apps Analytics

  Using Piwik to track your app usage would give interesting statistics usage such as :

  • number of active users (per day, week, month, …) of my mobile or desktop app,
  • how long users spend in the app,
  • track which icons, buttons are clicked (or any other custom event),
  • record device info, operating system,
  • reports on any Custom Variables you that are relevant to your app (see examples below),
  • how often is the app opened ? When and how long is the app opened ?
  • number of new users, active users, total users,
  • record errors or exception thrown

  Piwik SDK for iOS
  

  The PiwikTracker is an Objective-C framework (for iOS and OSX) designed to send app usage data to a Piwik analytics server. It is realeased under MIT license. Piwik server is a downloadable, Free/Libre (GPLv3 licensed) real time analytics platform.

  Getting started

  1. Create a new website in the Piwik web interface called “My App”. Copy the Website ID and the token_auth.
  2. Download the PiwikTracker SDK.
  3. Add the PiwikTracker files to your project.
  4. Create and configure the PiwikTracker.
  5. Add code in your app to track screen views, events, exceptions, goals and more
  6. Let the dispatch timer dispatch pending events to the Piwik server, or dispatch events manually.

  For more info, check out the Readme.

  Requirements

  The latest PiwikTracker version uses ARC and support iOS6+ and OSX 10.7+.

  • iOS tracker depends on : Core Data, Core Location, Core Graphics, UIKit and AFNetworking.
  • OSX tracker depends on : Core Data, Core Graphics, Cocoa and AFNetworking.

  Demo project

  The workspace contains an iPhone demo app that uses and demonstrates the features available in the SDK.

  

  Feedback needed

  If you use the iOS SDK to track your app, we would like to hear your suggestions, bug reports or general feedback.

  We hope to work with you to improve the SDK and move it out of beta !

  Please report suggestions, bugs, feature requests in the Github Issues at Piwik iOS SDK.

  Happy App Analytics !