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• ffmpeg command is not executed in PHP

  17 janvier 2015, par PreeT

  I am purchasing the third party ffmpeg hosting.

  now i just try to test the ffmpeg on my account, But im unable to get the output.
  Below is the code i was running for the test purpose.

  <?php
  
  define('FFMPEG_LIBRARY', '/usr/local/bin/ffmpeg');
  
  $file= "Manni.mp3";
  
  $exec_string = FFMPEG_LIBRARY.'-i Manni.mp3  -codec:a libmp3lame -b:a 128k ld.mp3';
  
  shell_exec($exec_string);
  
  >?

• fftools/ffmpeg : eliminate InputStream.got_output

  16 mai 2023, par Anton Khirnov

  fftools/ffmpeg : eliminate InputStream.got_output
  It tracks whether the decoder for this stream ever produced any frames
  
  and its only use is for checking whether a filter input ever received a
  
  frame - those that did not are prioritized by the scheduler.
  This is awkward and unnecessarily complicated - checking whether the
  
  filtergraph input format is valid works just as well and does not
  
  require maintaining an extra variable.
  

  • [DH] fftools/ffmpeg.c
  • [DH] fftools/ffmpeg.h
  • [DH] fftools/ffmpeg_filter.c

• How to specify streams by pid with ffmpeg, If the value of pid is duplicated ?

  22 novembre 2019, par Bo Wang

  I have a nice m2ts file and I would like to demux specific audio streams from it. Of important, this specification is needed to use PID as identifier.
  The exemplified m2ts file has 7 audio streams, which is detected by eac3to and shown below

  eac3to.exe F:\xxx 1)
  
  M2TS, 1 video track, 7 audio tracks, 5 subtitle tracks, 1:40:03
  
  1: Chapters, 34 chapters
  
  2: h265/HEVC, 2160p24 /1.001 (16:9), 10 bits
  
  3: TrueHD/AC3 (Atmos), English, 7.1 channels, 48kHz, dialnorm: -28dB
  
     (embedded: AC3, 5.1 channels, 640kbps, 48kHz, dialnorm: -27dB)
  
  4: E-AC3, English, 7.1 channels, 1024kbps, 48kHz, dialnorm: -28dB
  
     (core: AC3, 5.1 channels, 576kbps, 48kHz, dialnorm: -28dB)
  
  5: AC3, English, 5.1 channels, 640kbps, 48kHz, dialnorm: -27dB
  
  6: AC3, English, 2.0 channels, 320kbps, 48kHz, dialnorm: -27dB
  
  7: AC3, English, 2.0 channels, 320kbps, 48kHz, dialnorm: -27dB
  
  8: AC3, Chinese, 2.0 channels, 448kbps, 48kHz
  
  9: AC3, Chinese, 5.1 channels, 384kbps, 48kHz, 300ms
  
  10: Subtitle (PGS), English
  
  11: Subtitle (PGS), Chinese
  
  12: Subtitle (PGS), Chinese
  
  13: Subtitle (PGS), Chinese
  
  14: Subtitle (PGS), Chinese

  However, if I run
  ffmpeg.exe -hide_banner -i "F:\xxx\BDMV\STREAM\00055.m2ts", ffmpeg shows an additional audio stream as it recognizes the embedded 5.1 AC3 stream inside the 7.1 TrueHD audio stream, as independent :

  Input #0, mpegts, from 'F:\xxx\BDMV\STREAM\00055.m2ts':
  
    Duration: 00:00:48.62, start: 4198.333333, bitrate: 50005 kb/s
  
    Program 1
  
      Stream #0:0[0x1011]: Video: hevc (Main 10) (HDMV / 0x564D4448), yuv420p10le(tv, bt2020nc/bt2020/smpte2084), 3840x2160 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 90k tbn, 23.98 tbc
  
      Stream #0:1[0x1100]: Audio: truehd (AC-3 / 0x332D4341), 48000 Hz, 7.1, s32 (24 bit)
  
      Stream #0:2[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 640 kb/s
  
      Stream #0:3[0x1101]: Audio: eac3 (AC-3 / 0x332D4341), 48000 Hz, 7.1, fltp, 1024 kb/s
  
      Stream #0:4[0x1102]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 640 kb/s
  
      Stream #0:5[0x1103]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 320 kb/s
  
      Stream #0:6[0x1104]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 320 kb/s
  
      Stream #0:7[0x1105]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 448 kb/s
  
      Stream #0:8[0x1106]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 384 kb/s
  
      Stream #0:9[0x12a0]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
  
      Stream #0:10[0x12a1]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
  
      Stream #0:11[0x12a2]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
  
      Stream #0:12[0x12a3]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
  
      Stream #0:13[0x12a4]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)

  It can be found that the Stream #0:1 and Stream #0:2 have the same PID 0x1100. And ffmpeg.exe -hide_banner -i "F:\xxx\BDMV\STREAM\00055.m2ts" -map i:0x1100 -c copy 00055-0x1100.thd will yield error :

  [truehd @ 0000021ae9517600] truehd files have exactly one stream
  
  Could not write header for output file #0 (incorrect codec parameters ?): Invalid argument
  
  Stream mapping:
  
    Stream #0:1 -> #0:0 (copy)
  
    Stream #0:2 -> #0:1 (copy)
  
      Last message repeated 1 times

  By contrast, it works by giving other pids without duplication, such as ffmpeg.exe -hide_banner -i "F:\xxx\BDMV\STREAM\00055.m2ts" -map i:0x1101 -c copy 00055-0x1101.eac3 :

  Input #0, mpegts, from 'F:\xxx\BDMV\STREAM\00055.m2ts':
  
    Duration: 00:00:48.62, start: 4198.333333, bitrate: 50005 kb/s
  
    Program 1
  
      Stream #0:0[0x1011]: Video: hevc (Main 10) (HDMV / 0x564D4448), yuv420p10le(tv, bt2020nc/bt2020/smpte2084), 3840x2160 [SAR 1:1 DAR 16:9], 23.98 fps, 23.98 tbr, 90k tbn, 23.98 tbc
  
      Stream #0:1[0x1100]: Audio: truehd (AC-3 / 0x332D4341), 48000 Hz, 7.1, s32 (24 bit)
  
      Stream #0:2[0x1100]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 640 kb/s
  
      Stream #0:3[0x1101]: Audio: eac3 (AC-3 / 0x332D4341), 48000 Hz, 7.1, fltp, 1024 kb/s
  
      Stream #0:4[0x1102]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 640 kb/s
  
      Stream #0:5[0x1103]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 320 kb/s
  
      Stream #0:6[0x1104]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 320 kb/s
  
      Stream #0:7[0x1105]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, stereo, fltp, 448 kb/s
  
      Stream #0:8[0x1106]: Audio: ac3 (AC-3 / 0x332D4341), 48000 Hz, 5.1(side), fltp, 384 kb/s
  
      Stream #0:9[0x12a0]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
  
      Stream #0:10[0x12a1]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
  
      Stream #0:11[0x12a2]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
  
      Stream #0:12[0x12a3]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
  
      Stream #0:13[0x12a4]: Subtitle: hdmv_pgs_subtitle ([144][0][0][0] / 0x0090)
  
  Output #0, eac3, to '00055-0x1101.eac3':
  
    Metadata:
  
      encoder         : Lavf58.34.101
  
      Stream #0:0: Audio: eac3 (AC-3 / 0x332D4341), 48000 Hz, 7.1, fltp, 1024 kb/s
  
  Stream mapping:
  
    Stream #0:3 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  size=    6076kB time=00:00:48.57 bitrate=1024.7kbits/s speed=92.6x
  
  video:0kB audio:6076kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.000000%

  In this case, how can I specify the streams by PID ?