PHP Fatal error:  Uncaught Alchemy\BinaryDriver\Exception\ExecutionFailureException: ffmpeg failed to execute command '/usr/bin/avconv' '-y' '-i' '/media/disk/git/video-encoding/videos/test.mkv' '-vcodec' 'libx264' '-acodec' 'libfaac' '-b:v' '1000k' '-refs' '6' '-coder' '1' '-sc_threshold' '40' '-flags' '+loop' '-me_range' '16' '-subq' '7' '-i_qfactor' '0.71' '-qcomp' '0.6' '-qdiff' '4' '-trellis' '1' '-b:a' '128k' '-pass' '1' '-passlogfile' '/tmp/ffmpeg-passes579341d3262b8kkw4s/pass-579341d32643e' '/media/disk/git/video-encoding/test-X264.mp4' in /media/disk/git/video-encoding/vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/ProcessRunner.php:100
Stack trace:
#0 /media/disk/git/video-encoding/vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/ProcessRunner.php(72): Alchemy\BinaryDriver\ProcessRunner->doExecutionFailure(''/usr/bin/avcon...')
#1 /media/disk/git/video-encoding/vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/AbstractBinary.php(209): Alchemy\BinaryDriver\ProcessRunner->run(Object( in /media/disk/git/video-encoding/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/Media/Video.php on line 168

avconv version 11.7-6:11.7-1~deb8u1, Copyright (c) 2000-2016 the Libav developers
  built on Jun 12 2016 21:51:35 with gcc 4.9.2 (Debian 4.9.2-10)
Input #0, matroska,webm, from '/media/disk/git/video-encoding/videos/test.mkv':
  Metadata:
    title           : Test
  Duration: 01:45:28.41, start: 0.000000, bitrate: N/A
    Chapter #0.0: start 0.000000, end 340.833000
    Metadata:
      title           : 00:00:00.000
    Chapter #0.1: start 340.833000, end 668.292000
    Metadata:
      title           : 00:05:40.833
    Chapter #0.2: start 668.292000, end 1032.917000
    Metadata:
      title           : 00:11:08.292
    Chapter #0.3: start 1032.917000, end 1354.958000
    Metadata:
      title           : 00:17:12.917
    Chapter #0.4: start 1354.958000, end 1688.792000
    Metadata:
      title           : 00:22:34.958
    Chapter #0.5: start 1688.792000, end 2050.625000
    Metadata:
      title           : 00:28:08.792
    Chapter #0.6: start 2050.625000, end 2318.333000
    Metadata:
      title           : 00:34:10.625
    Chapter #0.7: start 2318.333000, end 2693.333000
    Metadata:
      title           : 00:38:38.333
    Chapter #0.8: start 2693.333000, end 3001.583000
    Metadata:
      title           : 00:44:53.333
    Chapter #0.9: start 3001.583000, end 3366.125000
    Metadata:
      title           : 00:50:01.583
    Chapter #0.10: start 3366.125000, end 3669.292000
    Metadata:
      title           : 00:56:06.125
    Chapter #0.11: start 3669.292000, end 3989.250000
    Metadata:
      title           : 01:01:09.292
    Chapter #0.12: start 3989.250000, end 4294.542000
    Metadata:
      title           : 01:06:29.250
    Chapter #0.13: start 4294.542000, end 4621.167000
    Metadata:
      title           : 01:11:34.542
    Chapter #0.14: start 4621.167000, end 4957.375000
    Metadata:
      title           : 01:17:01.167
    Chapter #0.15: start 4957.375000, end 5262.750000
    Metadata:
      title           : 01:22:37.375
    Chapter #0.16: start 5262.750000, end 5578.417000
    Metadata:
      title           : 01:27:42.750
    Chapter #0.17: start 5578.417000, end 5871.458000
    Metadata:
      title           : 01:32:58.417
    Chapter #0.18: start 5871.458000, end 6027.542000
    Metadata:
      title           : 01:37:51.458
    Chapter #0.19: start 6027.542000, end 6328.417000
    Metadata:
      title           : 01:40:27.542
    Stream #0.0(eng): Video: h264 (High), yuv420p, 720x390 [PAR 1:1 DAR 24:13], 24 fps, 1k tbn, 48 tbc (default)
    Stream #0.1(ger): Audio: ac3, 48000 Hz, 5.1, fltp, 384 kb/s (default)
Unknown encoder 'libfaac'

Error while opening encoder for output stream #0:0 - maybe incorrect parameters such as bit_rate, rate, width or height

[2016-07-23 10:07:14] Execution.INFO: ffprobe running command '/usr/bin/avprobe' '-help' '-loglevel' 'quiet' [] []
[2016-07-23 10:07:14] Execution.INFO: ffprobe executed command successfully [] []
[2016-07-23 10:07:14] Execution.INFO: ffprobe running command '/usr/bin/avprobe' '/media/disk/git/video-encoding/videos/test.mkv' '-show_streams' '-of' 'json' [] []
[2016-07-23 10:07:15] Execution.INFO: ffprobe executed command successfully [] []
[2016-07-23 10:07:15] Execution.INFO: ffmpeg running command '/usr/bin/avconv' '-y' '-i' '/media/disk/git/video-encoding/videos/test.mkv' '-vcodec' 'libx264' '-acodec' 'libfaac' '-b:v' '1000k' '-refs' '6' '-coder' '1' '-sc_threshold' '40' '-flags' '+loop' '-me_range' '16' '-subq' '7' '-i_qfactor' '0.71' '-qcomp' '0.6' '-qdiff' '4' '-trellis' '1' '-b:a' '128k' '-pass' '1' '-passlogfile' '/tmp/ffmpeg-passes579341d3262b8kkw4s/pass-579341d32643e' '/media/disk/git/video-encoding/test-X264.mp4' [] []
[2016-07-23 10:07:15] Execution.INFO: ffprobe running command '/usr/bin/avprobe' '/media/disk/git/video-encoding/videos/test.mkv' '-show_format' '-of' 'json' [] []
[2016-07-23 10:07:15] Execution.INFO: ffprobe executed command successfully [] []
[2016-07-23 10:07:15] Execution.ERROR: ffmpeg failed to execute command '/usr/bin/avconv' '-y' '-i' '/media/disk/git/video-encoding/videos/test.mkv' '-vcodec' 'libx264' '-acodec' 'libfaac' '-b:v' '1000k' '-refs' '6' '-coder' '1' '-sc_threshold' '40' '-flags' '+loop' '-me_range' '16' '-subq' '7' '-i_qfactor' '0.71' '-qcomp' '0.6' '-qdiff' '4' '-trellis' '1' '-b:a' '128k' '-pass' '1' '-passlogfile' '/tmp/ffmpeg-passes579341d3262b8kkw4s/pass-579341d32643e' '/media/disk/git/video-encoding/test-X264.mp4' [] []

$this->video->save(new \FFMpeg\Format\Video\X264(), $path);