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  • FFMPEG : How to chose a stream from all stream

    17 janvier 2020, par Ali

    I try to convert a UDP stream (that genrated from DVB signal) to HLS m3u8 file with this code :

    ffmpeg -i udp://239.1.2.1:60001 -acodec aac -strict -2 -vcodec libx264 -hls_wrap 100 -f hls /var/www/html/ts/1.m3u8

    UDP stream contain 1 channel (in this case IRIB-TV1).

    When I run this above code, ffmpeg detect all of service and channel that streamed from DVB card with this message :

    Input #0, mpegts, from 'udp://239.1.2.1:60001':
    
Duration: N/A, start: 77906.812644, bitrate: N/A
    
Program 101 
    
Metadata:
    
  service_name    : IRIB-TV1
    
  service_provider: IRIB
    
Stream #0:0[0x3f2]: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(tv, bt470bg), 720x576 [SAR 12:11 DAR 15:11], 25 fps, 50 tbr, 90k tbn, 50 tbc
    
Stream #0:1[0x3f3](per): Audio: aac_latm ([17][0][0][0] / 0x0011), 48000 Hz, stereo, fltp
    
Program 102 
    
Metadata:
    
  service_name    : IRIB-TV2
    
  service_provider: IRIB
    
Program 103 
    
Metadata:
    
  service_name    : IRIB-TV3
    
  service_provider: IRIB
    
Program 104 
    
Metadata:
    
  service_name    : IRIB-TV4
    
  service_provider: IRIB

    As you see ffmpeg finf 4 channel in UDP stream, But VLC play only channel 1(IRIB-TV1).

    Now I have have 2 question :

    1-Can I get all channel and service via this ffmpeg code ?

    2-Can I choose a special stream from this ffmpeg code ?(I know that ffmpeg can choose a stream with -map option but I want to choose other service_name that in output log)

    output file is :

     ffmpeg version 2.4.3-1ubuntu1~trusty6 Copyright (c) 2000-2014 the FFmpeg developers
    
  built on Nov 22 2014 17:07:19 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
    
  configuration: --prefix=/usr --extra-version='1ubuntu1~trusty6' --build-suffix=-ffmpeg --toolchain=hardened --extra-cflags= --extra-cxxflags= --libdir=/usr/lib/x86_64-linux-gnu --shlibdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --enable-shared --disable-stripping --enable-avresample --enable-avisynth --enable-fontconfig --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --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-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-opengl --enable-x11grab --enable-libxvid --enable-libx265 --enable-libdc1394 --enable-libiec61883 --enable-libzvbi --enable-libzmq --enable-frei0r --enable-libx264 --enable-libsoxr --enable-openal --enable-libopencv
    
  libavutil      54.  7.100 / 54.  7.100
    
  libavcodec     56.  1.100 / 56.  1.100
    
  libavformat    56.  4.101 / 56.  4.101
    
  libavdevice    56.  0.100 / 56.  0.100
    
  libavfilter     5.  1.100 /  5.  1.100
    
  libavresample   2.  1.  0 /  2.  1.  0
    
  libswscale      3.  0.100 /  3.  0.100
    
  libswresample   1.  1.100 /  1.  1.100
    
  libpostproc    53.  0.100 / 53.  0.100
    
Splitting the commandline.
    
Reading option '-loglevel' ... matched as option 'loglevel' (set logging level) with argument 'debug'.
    
Reading option '-timeout' ... matched as AVOption 'timeout' with argument '6000000'.
    
Reading option '-i' ... matched as input file with argument 'udp://239.1.2.1:60001?fifo_size=50000'.
    
Reading option '-acodec' ... matched as option 'acodec' (force audio 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 '-preset' ... matched as AVOption 'preset' with argument 'ultrafast'.
    
Reading option '-flags' ... matched as AVOption 'flags' with argument '-global_header'.
    
Reading option '-f' ... matched as option 'f' (force format) with argument 'hls'.
    
Reading option '-hls_time' ... matched as AVOption 'hls_time' with argument '20'.
    
Reading option '-hls_wrap' ... matched as AVOption 'hls_wrap' with argument '5'.
    
Reading option '/var/www/html/ts/1.m3u8' ... matched as output file.
    
Finished splitting the commandline.
    
Parsing a group of options: global .
    
Applying option loglevel (set logging level) with argument debug.
    
Successfully parsed a group of options.
    
Parsing a group of options: input file udp://239.1.2.1:60001?fifo_size=50000.
    
Successfully parsed a group of options.
    
Opening an input file: udp://239.1.2.1:60001?fifo_size=50000.
    
[udp @ 0x1967040] end receive buffer size reported is 131072
    
[mpegts @ 0x1977380] Format mpegts probed with size=2048 and score=100
    
[mpegts @ 0x1977380] stream=0 stream_type=1b pid=3f2 prog_reg_desc=
    
[mpegts @ 0x1977380] stream=1 stream_type=11 pid=3f3 prog_reg_desc=
    
[mpegts @ 0x1977380] Before avformat_find_stream_info() pos: 0 bytes read:14476 seeks:0
    
[mpegts @ 0x1977380] parser not found for codec none, packets or times may be invalid.
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[mpegts @ 0x1977380] probing stream 1 pp:2500
    
[mpegts @ 0x1977380] Probe with size=853, packets=1 detected loas with score=51
    
[mpegts @ 0x1977380] probed stream 1
    
[aac_latm @ 0x199e4e0] initializing latmctx
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] non-existing PPS 0 referenced
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] decode_slice_header error
    
[h264 @ 0x199cc60] no frame!
    
[h264 @ 0x199cc60] Current profile doesn't provide more RBSP data in PPS, skipping
    
[h264 @ 0x199cc60] Frame num gap 397 393
    
[h264 @ 0x199cc60] Frame num gap 397 394
    
[h264 @ 0x199cc60] Frame num gap 397 395
    
[h264 @ 0x199cc60] mmco: unref short failure
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] number of reference frames (0+4) exceeds max (3; probably corrupt input), discarding one
    
[h264 @ 0x199cc60] no picture ooo
    
[h264 @ 0x199cc60] Increasing reorder buffer to 2
    
[h264 @ 0x199cc60] no picture ooo
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] no picture 
    
    Last message repeated 1 times
    
[h264 @ 0x199cc60] Current profile doesn't provide more RBSP data in PPS, skipping
    
    Last message repeated 3 times
    
[mpegts @ 0x1977380] max_analyze_duration 5000000 reached at 5034667 microseconds
    
[mpegts @ 0x1977380] After avformat_find_stream_info() pos: 1142476 bytes read:1143604 seeks:0 frames:397
    
Input #0, mpegts, from 'udp://239.1.2.1:60001?fifo_size=50000':
    
  Duration: N/A, start: 43581.024200, bitrate: N/A
    
  Program 101 
    
    Metadata:
    
      service_name    : IRIB-TV1
    
      service_provider: IRIB
    
    Stream #0:0[0x3f2], 274, 1/90000: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p(tv, bt470bg), 720x576 [SAR 12:11 DAR 15:11], 1/50, 25 fps, 50 tbr, 90k tbn, 50 tbc
    
    Stream #0:1[0x3f3](per), 123, 1/90000: Audio: aac_latm ([17][0][0][0] / 0x0011), 48000 Hz, stereo, fltp
    
  Program 102 
    
    Metadata:
    
      service_name    : IRIB-TV2
    
      service_provider: IRIB
    
  Program 103 
    
    Metadata:
    
      service_name    : IRIB-TV3
    
      service_provider: IRIB
    
  Program 104 
    
    Metadata:
    
      service_name    : IRIB-TV4
    
      service_provider: IRIB
    
  Program 105 
    
    Metadata:
    
      service_name    : IRIB-TV5
    
      service_provider: IRIB
    
  Program 106 
    
    Metadata:
    
      service_name    : IRINN
    
      service_provider: IRIB
    
  Program 107 
    
    Metadata:
    
      service_name    : AMOOZESH
    
      service_provider: IRIB
    
  Program 108 
    
    Metadata:
    
      service_name    : QURAN
    
      service_provider: IRIB
    
  Program 119 
    
    Metadata:
    
      service_name    : SALAMAT
    
      service_provider: IRIB
    
  Program 120 
    
    Metadata:
    
      service_name    : NASIM
    
      service_provider: IRIB
    
  Program 151 
    
    Metadata:
    
      service_name    : RADIO IRAN
    
      service_provider: IRIB
    
  Program 152 
    
    Metadata:
    
      service_name    : RADIO PAYAM
    
      service_provider: IRIB
    
  Program 153 
    
    Metadata:
    
      service_name    : RADIO JAVAN
    
      service_provider: IRIB
    
  Program 154 
    
    Metadata:
    
      service_name    : RADIO MAAREF
    
      service_provider: IRIB
    
  Program 155 
    
    Metadata:
    
      service_name    : RADIO QURAN
    
      service_provider: IRIB
    
  Program 156 
    
    Metadata:
    
      service_name    : RADIO FARHANG
    
      service_provider: IRIB
    
  Program 157 
    
    Metadata:
    
      service_name    : RADIO SALAMAT
    
      service_provider: IRIB
    
  Program 158 
    
    Metadata:
    
      service_name    : RADIO VARZESH
    
      service_provider: IRIB
    
  Program 159 
    
    Metadata:
    
      service_name    : RADIO EGHTESAD
    
      service_provider: IRIB
    
  Program 160 
    
    Metadata:
    
      service_name    : RADIO TEHRAN
    
      service_provider: IRIB
    
  Program 161 
    
    Metadata:
    
      service_name    : RADIO AVAA
    
      service_provider: IRIB
    
  Program 162 
    
    Metadata:
    
      service_name    : RADIO NAMAYESH
    
      service_provider: IRIB
    
  Program 163 
    
    Metadata:
    
      service_name    : RADIO SABA
    
      service_provider: IRIB
    
  Program 164 
    
    Metadata:
    
      service_name    : English Radio World Service
    
      service_provider: IRIB
    
  Program 166 
    
    Metadata:
    
      service_name    : Arabic Radio World Service
    
      service_provider: IRIB
    
  Program 167 
    
    Metadata:
    
      service_name    : RADIO BAHARAN
    
      service_provider: IRIB
    
  Program 169 
    
    Metadata:
    
      service_name    : RADIO TELAVAT
    
      service_provider: IRIB
    
  Program 170 
    
    Metadata:
    
      service_name    : RADIO GOFTEGO
    
      service_provider: IRIB
    
Successfully opened the file.
    
Parsing a group of options: output file /var/www/html/ts/1.m3u8.
    
Applying option acodec (force audio codec ('copy' to copy stream)) with argument copy.
    
Applying option vcodec (force video codec ('copy' to copy stream)) with argument copy.
    
Applying option f (force format) with argument hls.
    
Successfully parsed a group of options.
    
Opening an output file: /var/www/html/ts/1.m3u8.
    
Successfully opened the file.
    
[mpegts @ 0x1967180] Using AVStream.codec.time_base as a timebase hint to the muxer is deprecated. Set AVStream.time_base instead.
    
    Last message repeated 1 times
    
[mpegts @ 0x1967180] muxrate VBR, pcr every 2 pkts, sdt every 200, pat/pmt every 40 pkts
    
Output #0, hls, to '/var/www/html/ts/1.m3u8':
    
  Metadata:
    
    encoder         : Lavf56.4.101
    
    Stream #0:0, 0, 1/90000: Video: h264 ([27][0][0][0] / 0x001B), yuv420p, 720x576 [SAR 12:11 DAR 15:11], 1/25, q=2-31, 25 fps, 90k tbn, 25 tbc
    
    Stream #0:1(per), 0, 1/90000: Audio: aac_latm ([17][0][0][0] / 0x0011), 48000 Hz, stereo
    
Stream mapping:
    
  Stream #0:0 -> #0:0 (copy)
    
  Stream #0:1 -> #0:1 (copy)
    
Press [q] to stop, [?] for help
    
[NULL @ 0x199cc60] Current profile doesn't provide more RBSP data in PPS, skipping
    
[NULL @ 0x199cc60] Current profile doesn't provide more RBSP data in PPS, skipping
    
[NULL @ 0x199cc60] Current profile doesn't provide more RBSP data in PPS, skipping
    
[NULL @ 0x199cc60] Current profile doesn't provide more RBSP data in PPS, skipping
    
[NULL @ 0x199cc60] Current profile doesn't provide more RBSP data in PPS, skipping
    
[NULL @ 0x199cc60] Current profile doesn't provide more RBSP data in PPS, skipping
    
[NULL @ 0x199cc60] Current profile doesn't provide more RBSP data in PPS, skipping
    
[NULL @ 0x199cc60] Current profile doesn't provide more RBSP data in PPS, skipping
    
[NULL @ 0x199cc60] Current profile doesn't provide more RBSP data in PPS, skipping
    
[NULL @ 0x199cc60] Current profile doesn't provide more RBSP data in PPS, skipping
    
[NULL @ 0x199cc60] Current profile doesn't provide more RBSP data in PPS, skipping
    
[AVIOContext @ 0x19a9860] Statistics: 0 seeks, 896 writeouts=N/A    
    
[hls @ 0x1a65ca0] EXT-X-MEDIA-SEQUENCE:0
    
[AVIOContext @ 0x1d162e0] Statistics: 0 seeks, 1 writeouts
    
[AVIOContext @ 0x1966b40] Statistics: 0 seeks, 27 writeouts
    
[hls @ 0x1a65ca0] EXT-X-MEDIA-SEQUENCE:0
    
[AVIOContext @ 0x199b7a0] Statistics: 0 seeks, 1 writeouts
    
frame=  826 fps= 69 q=-1.0 Lsize=N/A time=00:00:20.63 bitrate=N/A    
    
video:2611kB audio:68kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
    
Input file #0 (udp://239.1.2.1:60001?fifo_size=50000):
    
  Input stream #0:0 (video): 872 packets read (2779202 bytes); 
    
  Input stream #0:1 (audio): 405 packets read (69222 bytes); 
    
  Total: 1277 packets (2848424 bytes) demuxed
    
Output file #0 (/var/www/html/ts/1.m3u8):
    
  Output stream #0:0 (video): 826 packets muxed (2673485 bytes); 
    
  Output stream #0:1 (audio): 405 packets muxed (69222 bytes); 
    
  Total: 1231 packets (2742707 bytes) muxed
    
0 frames successfully decoded, 0 decoding errors
    
[AVIOContext @ 0x1967ce0] Statistics: 3884832 bytes read, 0 seeks
    
Received signal 2: terminating.

  • ffmpeg errors when playing a playlist - Non monotonous DTS

    20 novembre 2023, par Evilmachine

    i have a strange bug in ffmpeg. I am using ffmpeg to stream Twitch VODs and CLIPs to a 24/7 twitch channel. If i stream the files one by one its working. If i am streaming a playlist containing vods and clips i get this error when the shorter clips are playing :

    


    [flv @ 0x555677050c60] Non-monotonous DTS in output stream 0:0; previous: 56867, current: 31846; changing to 56867. This may result in incorrect timestamps in the output file.

    


    and the video stops. Once the playlist has a longer vod again it is working.

    


    here is my code that i use to stream :

    


    while [ 1 -eq 1 ]
do
ffmpeg  -fflags +igndts -re -f concat -safe 0 -i playlist.txt -codec copy -flvflags no_duration_filesize -f flv rtmp://XXXXXXXXX
done


    


    If i look into ffprobe the files seems both to be normal :

    


    VODs

    


    ffprobe version 5.1.3-1+rpt4 Copyright (c) 2007-2022 the FFmpeg developers
  built with gcc 12 (Debian 12.2.0-14)
  configuration: --prefix=/usr --extra-version=1+rpt4 --toolchain=hardened --incdir=/usr/include/aarch64-linux-gnu --enable-gpl --disable-stripping --disable-mmal --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libglslang --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librist --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sand --enable-sdl2 --disable-sndio --enable-libjxl --enable-neon --enable-v4l2-request --enable-libudev --enable-epoxy --libdir=/usr/lib/aarch64-linux-gnu --arch=arm64 --enable-pocketsphinx --enable-librsvg --enable-libdc1394 --enable-libdrm --enable-vout-drm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-libplacebo --enable-librav1e --enable-shared
  libavutil      57. 28.100 / 57. 28.100
  libavcodec     59. 37.100 / 59. 37.100
  libavformat    59. 27.100 / 59. 27.100
  libavdevice    59.  7.100 / 59.  7.100
  libavfilter     8. 44.100 /  8. 44.100
  libswscale      6.  7.100 /  6.  7.100
  libswresample   4.  7.100 /  4.  7.100
  libpostproc    56.  6.100 / 56.  6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Speedrun - Goof Troop - Coop - @olli_wan und luk30994 -- Disney's Goof Troop.mp4':
  Metadata:
    major_brand     : mp42
    minor_version   : 0
    compatible_brands: isommp42
    creation_time   : 2023-10-17T11:46:25.000000Z
  Duration: 00:28:23.02, start: 0.000000, bitrate: 1004 kb/s
  Stream #0:0[0x1](und): Video: h264 (High) (avc1 / 0x31637661), yuv420p(tv, bt709, progressive), 1280x720 [SAR 1:1 DAR 16:9], 873 kb/s, 30 fps, 30 tbr, 15360 tbn (default)
    Metadata:
      creation_time   : 2023-10-17T11:46:25.000000Z
      handler_name    : ISO Media file produced by Google Inc. Created on: 10/17/2023.
      vendor_id       : [0][0][0][0]
  Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 44100 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      creation_time   : 2023-10-17T11:46:25.000000Z
      handler_name    : ISO Media file produced by Google Inc. Created on: 10/17/2023.
      vendor_id       : [0][0][0][0]


    


    CLIPS

    


    ffprobe version 5.1.3-1+rpt4 Copyright (c) 2007-2022 the FFmpeg developers
  built with gcc 12 (Debian 12.2.0-14)
  configuration: --prefix=/usr --extra-version=1+rpt4 --toolchain=hardened --incdir=/usr/include/aarch64-linux-gnu --enable-gpl --disable-stripping --disable-mmal --enable-gnutls --enable-ladspa --enable-libaom --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libcodec2 --enable-libdav1d --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libglslang --enable-libgme --enable-libgsm --enable-libjack --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librabbitmq --enable-librist --enable-librubberband --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libssh --enable-libsvtav1 --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvorbis --enable-libvpx --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzimg --enable-libzmq --enable-libzvbi --enable-lv2 --enable-omx --enable-openal --enable-opencl --enable-opengl --enable-sand --enable-sdl2 --disable-sndio --enable-libjxl --enable-neon --enable-v4l2-request --enable-libudev --enable-epoxy --libdir=/usr/lib/aarch64-linux-gnu --arch=arm64 --enable-pocketsphinx --enable-librsvg --enable-libdc1394 --enable-libdrm --enable-vout-drm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libx264 --enable-libplacebo --enable-librav1e --enable-shared
  libavutil      57. 28.100 / 57. 28.100
  libavcodec     59. 37.100 / 59. 37.100
  libavformat    59. 27.100 / 59. 27.100
  libavdevice    59.  7.100 / 59.  7.100
  libavfilter     8. 44.100 /  8. 44.100
  libswscale      6.  7.100 /  6.  7.100
  libswresample   4.  7.100 /  4.  7.100
  libpostproc    56.  6.100 / 56.  6.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'Clip -- Luk - Terra - Lebensweisheiten mit Lukas Thema Smart.mp4':
  Metadata:
    major_brand     : isom
    minor_version   : 512
    compatible_brands: isomiso2avc1mp41
    encoder         : Lavf57.83.100
  Duration: 00:00:05.00, start: 0.000000, bitrate: 5520 kb/s
  Stream #0:0[0x1](und): Video: h264 (Main) (avc1 / 0x31637661), yuv420p(tv, unknown/bt709/unknown, progressive), 1280x720, 5374 kb/s, 60.20 fps, 60 tbr, 15360 tbn (default)
    Metadata:
      handler_name    : VideoHandler
      vendor_id       : [0][0][0][0]
  Stream #0:1[0x2](und): Audio: aac (LC) (mp4a / 0x6134706D), 48000 Hz, stereo, fltp, 128 kb/s (default)
    Metadata:
      handler_name    : SoundHandler
      vendor_id       : [0][0][0][0]


    


    Has someone a hint why this error happens and how i can avoid them ?
Is gstreamer better for this approach ?

    


    Thanks a lot in Advance.

    


    I tried changing the files.

    


  • Live streaming : node-media-server + Dash.js configured for real-time low latency

    7 juillet 2021, par Maoration

    We're working on an app that enables live monitoring of your back yard.
Each client has a camera connected to the internet, streaming to our public node.js server.

    



    I'm trying to use node-media-server to publish an MPEG-DASH (or HLS) stream to be available for our app clients, on different networks, bandwidths and resolutions around the world.

    



    Our goal is to get as close as possible to live "real-time" so you can monitor what happens in your backyard instantly.

    



    The technical flow already accomplished is :

    



      


    1. ffmpeg process on our server processes the incoming camera stream (separate child process for each camera) and publishes the stream via RTSP on the local machine for node-media-server to use as an 'input' (we are also saving segmented files, generating thumbnails, etc.). the ffmpeg command responsible for that is :

      



      -c:v libx264 -preset ultrafast -tune zerolatency -b:v 900k -f flv rtmp://127.0.0.1:1935/live/office

      2. 


    2. node-media-server is running with what I found as the default configuration for 'live-streaming'

      



      private NMS_CONFIG = {
server: {
  secret: 'thisisnotmyrealsecret',
},
rtmp_server: {
  rtmp: {
    port: 1935,
    chunk_size: 60000,
    gop_cache: false,
    ping: 60,
    ping_timeout: 30,
  },
  http: {
    port: 8888,
    mediaroot: './server/media',
    allow_origin: '*',
  },
  trans: {
    ffmpeg: '/usr/bin/ffmpeg',
    tasks: [
      {
        app: 'live',
        hls: true,
        hlsFlags: '[hls_time=2:hls_list_size=3:hls_flags=delete_segments]',
        dash: true,
        dashFlags: '[f=dash:window_size=3:extra_window_size=5]',
      },
    ],
  },
},


      



      } ;

      3. 


    3. As I understand it, out of the box NMS (node-media-server) publishes the input stream it gets in multiple output formats : flv, mpeg-dash, hls.
with all sorts of online players for these formats I'm able to access and the stream using the url on localhost. with mpeg-dash and hls I'm getting anything between 10-15 seconds of delay, and more.

      4. 


    



    



    My goal now is to implement a local client-side mpeg-dash player, using dash.js and configure it to be as close as possible to live.

    



    my code for that is :

    



    

    

    &#xD;&#xA;&#xD;&#xA;    &#xD;&#xA;        &#xD;&#xA;        &#xD;&#xA;    &#xD;&#xA;    &#xD;&#xA;        <div>&#xD;&#xA;            <video autoplay="" controls=""></video>&#xD;&#xA;        </div>&#xD;&#xA;        <code class="echappe-js">&lt;script src=&quot;https://cdnjs.cloudflare.com/ajax/libs/dashjs/3.0.2/dash.all.min.js&quot;&gt;&lt;/script&gt;&#xD;&#xA;&#xD;&#xA;        &lt;script&gt;&amp;#xD;&amp;#xA;            (function(){&amp;#xD;&amp;#xA;                // var url = &quot;https://dash.akamaized.net/envivio/EnvivioDash3/manifest.mpd&quot;;&amp;#xD;&amp;#xA;                var url = &quot;http://localhost:8888/live/office/index.mpd&quot;;&amp;#xD;&amp;#xA;                var player = dashjs.MediaPlayer().create();&amp;#xD;&amp;#xA;                &amp;#xD;&amp;#xA;                &amp;#xD;&amp;#xA;&amp;#xD;&amp;#xA;                // config&amp;#xD;&amp;#xA;                targetLatency = 2.0;        // Lowering this value will lower latency but may decrease the player&amp;#x27;s ability to build a stable buffer.&amp;#xD;&amp;#xA;                minDrift = 0.05;            // Minimum latency deviation allowed before activating catch-up mechanism.&amp;#xD;&amp;#xA;                catchupPlaybackRate = 0.5;  // Maximum catch-up rate, as a percentage, for low latency live streams.&amp;#xD;&amp;#xA;                stableBuffer = 2;           // The time that the internal buffer target will be set to post startup/seeks (NOT top quality).&amp;#xD;&amp;#xA;                bufferAtTopQuality = 2;     // The time that the internal buffer target will be set to once playing the top quality.&amp;#xD;&amp;#xA;&amp;#xD;&amp;#xA;&amp;#xD;&amp;#xA;                player.updateSettings({&amp;#xD;&amp;#xA;                    &amp;#x27;streaming&amp;#x27;: {&amp;#xD;&amp;#xA;                        &amp;#x27;liveDelay&amp;#x27;: 2,&amp;#xD;&amp;#xA;                        &amp;#x27;liveCatchUpMinDrift&amp;#x27;: 0.05,&amp;#xD;&amp;#xA;                        &amp;#x27;liveCatchUpPlaybackRate&amp;#x27;: 0.5,&amp;#xD;&amp;#xA;                        &amp;#x27;stableBufferTime&amp;#x27;: 2,&amp;#xD;&amp;#xA;                        &amp;#x27;bufferTimeAtTopQuality&amp;#x27;: 2,&amp;#xD;&amp;#xA;                        &amp;#x27;bufferTimeAtTopQualityLongForm&amp;#x27;: 2,&amp;#xD;&amp;#xA;                        &amp;#x27;bufferToKeep&amp;#x27;: 2,&amp;#xD;&amp;#xA;                        &amp;#x27;bufferAheadToKeep&amp;#x27;: 2,&amp;#xD;&amp;#xA;                        &amp;#x27;lowLatencyEnabled&amp;#x27;: true,&amp;#xD;&amp;#xA;                        &amp;#x27;fastSwitchEnabled&amp;#x27;: true,&amp;#xD;&amp;#xA;                        &amp;#x27;abr&amp;#x27;: {&amp;#xD;&amp;#xA;                            &amp;#x27;limitBitrateByPortal&amp;#x27;: true&amp;#xD;&amp;#xA;                        },&amp;#xD;&amp;#xA;                    }&amp;#xD;&amp;#xA;                });&amp;#xD;&amp;#xA;&amp;#xD;&amp;#xA;                console.log(player.getSettings());&amp;#xD;&amp;#xA;&amp;#xD;&amp;#xA;                setInterval(() =&gt; {&amp;#xD;&amp;#xA;                  console.log(&amp;#x27;Live latency= &amp;#x27;, player.getCurrentLiveLatency());&amp;#xD;&amp;#xA;                  console.log(&amp;#x27;Buffer length= &amp;#x27;, player.getBufferLength(&amp;#x27;video&amp;#x27;));&amp;#xD;&amp;#xA;                }, 3000);&amp;#xD;&amp;#xA;&amp;#xD;&amp;#xA;                player.initialize(document.querySelector(&quot;#videoPlayer&quot;), url, true);&amp;#xD;&amp;#xA;&amp;#xD;&amp;#xA;            })();&amp;#xD;&amp;#xA;&amp;#xD;&amp;#xA;        &lt;/script&gt;&#xD;&#xA;    &#xD;&#xA;

    &#xD;&#xA;

    &#xD;&#xA;

    &#xD;&#xA;&#xA;&#xA;

    with the online test video (https://dash.akamaized.net/envivio/EnvivioDash3/manifest.mpd) I see that the live latency value is close to 2 secs (but I have no way to actually confirm it. it's a video file streamed. in my office I have a camera so I can actually compare latency between real-life and the stream I get).&#xA;however when working locally with my NMS, it seems this value does not want to go below 20-25 seconds.

    &#xA;&#xA;

    Am I doing something wrong ? any configuration on the player (client-side html) I'm forgetting ?&#xA;or is there a missing configuration I should add on the server side (NMS) ?

    &#xA;

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