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• At least one output file must be specified

  11 mai 2015, par Desipicforu Blogspot

  I am using this command in ffmpeg

     ffmpeg -i test.flv -i /var/www/phpvibe/logo.gif -filter_complex "scale=1200:-1,overlay=0:0" -s 1280x720 -vcodec libx264 -s 640x360 -movflags test.mp4 2>&1

  But i am getting this

   string(42) "At least one output file must be specified"

  updated :-

  php code :-

   $output ='{ffmpeg-cmd} -i {input} -i /var/www/phpvibe/logo.gif -filter_complex "scale=1200:-1,overlay=0:0" -s 1280x720 -vcodec libx264 -s {ffmpeg-vsize} -threads 4 -movflags {output}.mp4 2>&1';

  Complete output :-

    array(33) {
  
    [0]=>
  
   string(83) "ffmpeg version git-2015-05-11-94c20de Copyright (c)  2000-2015 the FFmpeg developers"
  
   [1]=>
  
   string(51) "  built with gcc 4.6 (Ubuntu/Linaro 4.6.3-1ubuntu5)"
  
   [2]=>
  
  string(243) "  configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-version3"
  
  [3]=>
  
    string(40) "  libavutil      54. 23.101 / 54. 23.101"
  
  [4]=>
  
  string(40) "  libavcodec     56. 38.100 / 56. 38.100"
  
  [5]=>
  
  string(40) "  libavformat    56. 32.100 / 56. 32.100"
  
  [6]=>
  
  string(40) "  libavdevice    56.  4.100 / 56.  4.100"
  
  [7]=>
  
  string(40) "  libavfilter     5. 16.101 /  5. 16.101"
  
  [8]=>
  
  string(40) "  libswscale      3.  1.101 /  3.  1.101"
  
  [9]=>
  
  string(40) "  libswresample   1.  1.100 /  1.  1.100"
  
  [10]=>
  
  string(40) "  libpostproc    53.  3.100 / 53.  3.100"
  
  [11]=>
  
  string(47) "Trailing options were found on the commandline."
  
  [12]=>
  
  string(31) "Input #0, flv, from 'test.flv':"
  
  [13]=>
  
   string(11) "  Metadata:"
  
  [14]=>
  
  string(28) "    audiosize       : 150117"
  
   [15]=>
  
   string(26) "    canSeekToEnd    : true"
  
   [16]=>
  
   string(29) "    datasize        : 1015662"
  
   [17]=>
  
   string(26) "    hasAudio        : true"
  
   [18]=>
  
   string(27) "    hasCuePoints    : false"
  
   [19]=>
  
   string(26) "    hasKeyframes    : true"
  
   [20]=>
  
   string(26) "    hasMetadata     : true"
  
   [21]=>
  
   string(26) "    hasVideo        : true"
  
   [22]=>
  
   string(24) "    lasttimestamp   : 42"
  
   [23]=>
  
   string(72) "    metadatacreator : flvtool++ (Facebook, Motion project, dweatherford)"
  
   [24]=>
  
   string(25) "    totalframes     : 229"
  
   [25]=>
  
   string(28) "    videosize       : 856032"
  
   [26]=>
  
   string(59) "  Duration: 00:00:42.27, start: 0.066000, bitrate: 192 kb/s"
  
   [27]=>
  
   string(124) "    Stream #0:0: Video: h264 (High), yuv420p, 176x144 [SAR 12:11 DAR 4:3], 165 kb/s, 30.30 fps, 29.97 tbr, 1k tbn, 59.94 tbc"
  
   [28]=>
  
   string(64) "    Stream #0:1: Audio: aac (LC), 8000 Hz, stereo, fltp, 29 kb/s"
  
   [29]=>
  
   string(48) "Input #1, gif, from '/var/www/phpvibe/logo.gif':"
  
   [30]=>
  
  string(29) "  Duration: N/A, bitrate: N/A"
  
   [31]=>
  
   string(67) "    Stream #1:0: Video: gif, bgra, 90x55, 100 tbr, 100 tbn, 100 tbc"
  
   [32]=>
  
   string(42) "At least one output file must be specified"
  
  }
  
  int(1)

• basetime for strftime segment filename template

  12 mai 2015, par basin

  I have a big mp3 file, which I started recording at 17:24. Trying to split into 2 minute segments :

  ffmpeg -y -i test.mp3 -map 0 -c copy -f segment -segment_time 120 -reset_timestamps 1 -strftime 1 '1/test-%H-%M.mp3'

  Need segment names like test-17-24.mp3, test-17-26.mp3, ..., Actual first segment is named as current time, no extra segments created

  $ date
  
  Tue May 12 06:52:04 MSK 2015
  
  $ ffmpeg -y -i test.mp3 -map 0 -c copy -f segment -segment_time 120 -reset_timestamps 1 -strftime 1 '1/test-%H-%M.mp3'
  
  ffmpeg version N-72058-g3ecc063 Copyright (c) 2000-2015 the FFmpeg developers
  
  Input #0, mp3, from 'test.mp3':
  
    Duration: 05:45:05.94, start: 0.000000, bitrate: 171 kb/s
  
      Stream #0:0: Audio: mp3, 48000 Hz, stereo, s16p, 171 kb/s
  
  [segment @ 000000000051d560] Codec for stream 0 does not use global headers but container format requires global headers
  
  Output #0, segment, to '1/test-%H-%M.mp3':
  
    Metadata:
  
      encoder         : Lavf56.33.100
  
      Stream #0:0: Audio: mp3, 48000 Hz, stereo, 171 kb/s
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
  Press [q] to stop, [?] for help
  
  size=N/A time=00:13:07.87 bitrate=N/A
  
  video:0kB audio:16211kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: unknown
  
  $ ls 1
  
  test-06-52.mp3
  
  $

• Debugging an MP4 opened by VLC but not by ffplay

  15 mai 2017, par MaMazav

  I’m writing a code which creates MP4 files. To check it I’ve created an MP4 file.

  The file is played correctly by VLC and Firefox, but not by ffplay or by Chrome. I guess the file contains error which VLC can cope with but more aggressive MP4 reader cannot.

  I’ve thought about repairing the file and check what are the differences to fix my code. However I tried some programs to repair MP4 files, without success until now.

  Can someone reccommend another way to debug the problem, or a good tool to fix MP4 files ? The file is a fragmented MP4 contains both the init section (ftyp, moov boxes) and one fragment section (moof and empty sidx).

  Here is the video file :

  https://www.dropbox.com/s/rojxzvkfxfj31u8/400k00001-3_serialized.mp4?dl=0

  EDIT : It doesn’t work also in Firefox, when using Media Source Extensions like in this example :
  http://people.mozilla.org/ jyavenard/tests/mse_mp4/paper.html

  (don’t forget to enable MSE on Firefox, as explained here :
  http://www.linuxveda.com/2015/04/02/enable-mse-native-html5-support-firefox-linux/)

  EDIT2 : In chrome ://media-internals, I see the following error with the above example :
  Append : stream parsing failed. Data size=131072 append_window_start=0 append_window_end=inf

  (Change the URL to be the file and change the codec to be ’avc1.4d401f’ instead of ’avc1.64000d,mp4a.40.2’).