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• FFMPEG compiling on heroku

  17 juillet 2013, par Jan

  I have a Rails app running in heroku.

  I wanna watermark an original AUDIO-file with another AUDIO-file through a merging/mixing (amerge or amix) filter. Also fades and looping should work.

  FFMPEG must be compiled for this feature to run on heroku.
  My steps I got from this GIST which uses Vuclan

  https://gist.github.com/liufengyun/5055354

  Locally I use the following term to convert with Carrierwave which is an uploader :

  "-i Original.aiff -i public/watermark/#{ENV['WATERMARK_FILENAME']}.aiff -loop 1 -filter_complex '[1]afade=t=in:ss=0:d=1[4];[4]afade=t=out:st=#{self.evaluate_length-2}:d=2[5];[5][0]amix=duration=shortest[out]' -map [out]"

  This works with the ffmpeg built in on my mac.

  My compiled version for heroku does contain amerge, amix and the libavformat library.

  This is the log which I got from heroku when I go to my upload form and uplaod a file :
  (all this works, but only locally).

  Started POST "/sounds" for 84.113.97.32 at 2013-07-15 21:14:33 +0000
  
  2013-07-15T21:14:33.175631+00:00 app[web.1]: Running transcoding...
  
  2013-07-15T21:14:33.175631+00:00 app[web.1]: ffmpeg -y -i /tmp/sounds/1373922873-2-5714/watermark_loop-95.aiff -i public/watermark/1khz.aiff -loop 1 -filter_complex '[1]afade=t=in:ss=0:d=1[4];[4]afade=t=out:st=-2.0:d=2[5];[5][0]amix=duration=shortest[out]' -map [out] /tmp/sounds/1373922873-2-5714/watermark_loop-95.aiff
  
  2013-07-15T21:14:33.175631+00:00 app[web.1]:
  
  2013-07-15T21:14:33.241221+00:00 app[web.1]: Failed encoding...
  
  2013-07-15T21:14:33.241221+00:00 app[web.1]: ffmpeg -y -i /tmp/sounds/1373922873-2-5714/watermark_loop-95.aiff -i public/watermark/1khz.aiff -loop 1 -filter_complex '[1]afade=t=in:ss=0:d=1[4];[4]afade=t=out:st=-2.0:d=2[5];[5][0]amix=duration=shortest[out]' -map [out] /tmp/sounds/1373922873-2-5714/watermark_loop-95.aiff
  
  2013-07-15T21:14:33.241221+00:00 app[web.1]:
  
  2013-07-15T21:14:33.241221+00:00 app[web.1]: ffmpeg: error while loading shared libraries: libavformat.so.54: cannot open shared object file: No such file or directory
  
  2013-07-15T21:14:33.241221+00:00 app[web.1]:
  
  2013-07-15T21:14:33.241221+00:00 app[web.1]: Errors: encoded file is invalid.
  
  2013-07-15T21:14:33.241221+00:00 app[web.1]:
  
  2013-07-15T21:14:33.277487+00:00 app[web.1]:
  
  2013-07-15T21:14:33.277487+00:00 app[web.1]: FFMPEG::Error (Failed encoding.Errors: encoded file is invalid. Full output: ffmpeg: error while loading shared libraries: libavformat.so.54: cannot open shared object file: No such file or directory
  
  2013-07-15T21:14:33.277487+00:00 app[web.1]: ):
  
  2013-07-15T21:14:33.277487+00:00 app[web.1]:   app/uploaders/sound_uploader.rb:39:in `watermarking'
  
  2013-07-15T21:14:33.277487+00:00 app[web.1]:

  It's my 6th attempt to compile, get ffmpeg running correctly and watermarking my sounds on heroku.

  Please help me out of this neverending story.

• How to convert any format to H264 (html5) video using ffmpeg ? [on hold]

  14 juillet 2013, par kheya

  I am trying to use a single command to convert avi, mov, wmv etc to H264 (HTML5 playback)
  I have command that converted the avi correctly to H264 (created .mp4 file)
  But the same command fails to convert a quicktime mov file.

  I am using the 64bit static built on windows.

  Here is the command I used to convert AVI to H264. This one works.

  for %%a in ("*.avi") do (
  
      ffmpeg -i "%%a" -c:v libx264 -preset slow -crf 20 -c:a libvo_aacenc -b:a 128k "%%~na.mp4"
  
  )

  I am trying this to convert mov to H264 :

  for %%a in ("*.mov") do (
  
      ffmpeg -i "%%a" -vcodec mpeg4 -acodec libvo_aacenc "%%~na.mp4" //fails
  
      ffmpeg -i "%%a" -vcodec libx264 -vprofile high -preset slow -b:v 500k -maxrate 500k -bufsize 1000k -vf scale=-1:480 -threads 0 -acodec libvo_aacenc -b:a 128k "%%~na.mp4" //fails with error )

  Appreciate if you kindly help me.

  EDIT :
  Here is the error :
  [graph 1 input from stream 0:1 @ 0000000002689260] Invalid sample format (null)
  Error opening filters !

  Output of the command :

  ffmpeg -i "file2.mov" -vcodec libx264 -vprofile high -preset slow -b:v 500k -ma
  
  xrate 500k -bufsize 1000k -vf scale=-1:480 -threads 0 -acodec libvo_aacenc -b:a
  
  128k "file2.mp4"
  
  
  
  The system cannot find the drive specified.
  
  ffmpeg version N-54691-g7f4a1fd Copyright (c) 2000-2013 the FFmpeg developers
  
    built on Jul 12 2013 16:31:48 with gcc 4.7.3 (GCC)
  
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av
  
  isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab
  
  le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp
  
  e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena
  
  ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l
  
  ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp
  
  eex --enable-libtheora --enable-libtwolame --enable-libvo-aacenc --enable-libvo-
  
  amrwbenc --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libxavs --
  
  enable-libxvid --enable-zlib
  
    libavutil      52. 39.100 / 52. 39.100
  
    libavcodec     55. 18.102 / 55. 18.102
  
    libavformat    55. 12.102 / 55. 12.102
  
    libavdevice    55.  3.100 / 55.  3.100
  
    libavfilter     3. 80.101 /  3. 80.101
  
    libswscale      2.  3.100 /  2.  3.100
  
    libswresample   0. 17.102 /  0. 17.102
  
    libpostproc    52.  3.100 / 52.  3.100
  
  Guessed Channel Layout for  Input Stream #0.1 : mono
  
  Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'file2.mov':
  
    Metadata:
  
      creation_time   : 1998-11-12 18:28:20
  
    Duration: 00:00:28.60, start: 0.000000, bitrate: 111 kb/s
  
      Stream #0:0(eng): Video: svq1 (SVQ1 / 0x31515653), yuv410p, 160x120, 90 kb/s
  
  , 7.52 fps, 7.50 tbr, 600 tbn, 600 tbc
  
      Metadata:
  
        creation_time   : 1998-11-12 18:28:20
  
        handler_name    : Apple Alias Data Handler
  
      Stream #0:1(eng): Audio: qdmc (QDMC / 0x434D4451), 44100 Hz, mono
  
      Metadata:
  
        creation_time   : 1998-11-12 18:28:20
  
        handler_name    : Apple Alias Data Handler
  
  [graph 1 input from stream 0:1 @ 000000000251a080] Invalid sample format (null)
  
  Error opening filters!

• Ffmpeg didn't burn srt subtitle on mkv

  19 juillet 2013, par user2600010

  `ffmpeg version:git-fc6de70 (2013-07-18) with libass and fontconfig support.
  command line:ffmpeg.exe -i test.mkv -vf subtitles=test.srt out.mkv
  and i got this error. :

  Metadata:
  
      encoder         : Lavf55.12.102
  
      Stream #0:0(eng): Video: h264 (libx264) (H264 / 0x34363248), yuv420p, 1280x5
  
  76 [SAR 1:1 DAR 20:9], q=-1--1, 1k tbn, 23.98 tbc (default)
  
      Stream #0:1: Audio: vorbis (libvorbis) (oV[0][0] / 0x566F), 48000 Hz, stereo
  
  , fltp (default)
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (h264 -> libx264)
  
    Stream #0:1 -> #0:1 (aac -> libvorbis)
  
  Press [q] to stop, [?] for help
  
  [Parsed_subtitles_0 @ 00000000027b9960] Neither PlayResX nor PlayResY defined. A
  
  ssuming 384x288

  http://tinypic.com/r/2ag52so/5