Sur d’autres sites (7223)

• How do I record a specific application running on my Mac using ffmpeg ?

  3 janvier 2018, par Dave

  I just installed ffmpeg with using home-brew on Mac HighSierra. I want to record the contents (video only is fine) of an application running on my machine (as opposed to my entire Desktop). So I tried running the below

  davea$ ffmpeg -f gdigrab -framerate 25 -i title=DOSBox
  
  ffmpeg version 3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with Apple LLVM version 9.0.0 (clang-900.0.39.2)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/3.4.1 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma
  
    libavutil      55. 78.100 / 55. 78.100
  
    libavcodec     57.107.100 / 57.107.100
  
    libavformat    57. 83.100 / 57. 83.100
  
    libavdevice    57. 10.100 / 57. 10.100
  
    libavfilter     6.107.100 /  6.107.100
  
    libavresample   3.  7.  0 /  3.  7.  0
  
    libswscale      4.  8.100 /  4.  8.100
  
    libswresample   2.  9.100 /  2.  9.100
  
    libpostproc    54.  7.100 / 54.  7.100
  
  Unknown input format: 'gdigrab'

  but as you can see, I’m getting this

  Unknown input format: 'gdigrab'

  error. What’s the right way to record video on my computer for only a specific application using ffmpeg ?

  Edit : Using hte suggestion in comments, I got this other error ...

  davea$ ffmpeg -f avfoundation -list_devices true -i ""
  
  ffmpeg version 3.4.1 Copyright (c) 2000-2017 the FFmpeg developers
  
    built with Apple LLVM version 9.0.0 (clang-900.0.39.2)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/3.4.1 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma
  
    libavutil      55. 78.100 / 55. 78.100
  
    libavcodec     57.107.100 / 57.107.100
  
    libavformat    57. 83.100 / 57. 83.100
  
    libavdevice    57. 10.100 / 57. 10.100
  
    libavfilter     6.107.100 /  6.107.100
  
    libavresample   3.  7.  0 /  3.  7.  0
  
    libswscale      4.  8.100 /  4.  8.100
  
    libswresample   2.  9.100 /  2.  9.100
  
    libpostproc    54.  7.100 / 54.  7.100
  
  [AVFoundation input device @ 0x7fcbc160d0c0] AVFoundation video devices:
  
  [AVFoundation input device @ 0x7fcbc160d0c0] [0] FaceTime HD Camera
  
  [AVFoundation input device @ 0x7fcbc160d0c0] [1] Capture screen 0
  
  [AVFoundation input device @ 0x7fcbc160d0c0] AVFoundation audio devices:
  
  [AVFoundation input device @ 0x7fcbc160d0c0] [0] Built-in Microphone
  
  : Input/output error

• FFMpeg : ffmpeg failed to execute command error

  4 mars 2020, par Richard McFriend Oluwamuyiwa

  I am trying to transcode a video file of 1.2mb file uploaded to my website server via php/html upload, but I keep getting the error :

  PHP Fatal error :

  Uncaught exception
  ’Alchemy\BinaryDriver\Exception\ExecutionFailureException’ with
  message ’ffmpeg failed to execute command ’/usr/local/bin/ffmpeg’ ’-y’
  ’-i’
  ’/home/user/public_html/contents/videos/1490719990_MP4_360p_Short_video_clip_nature_mp4.mp4’
  ’-async’ ’1’ ’-metadata:s:v:0’ ’start_time=0’ ’-r’ ’16’ ’-b_strategy’
  ’1’ ’-bf’ ’3’ ’-g’ ’9’ ’-vcodec’ ’libx264’ ’-acodec’ ’libmp3lame’
  ’-b:v’ ’128k’ ’-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’ ’8k’ ’-ac’ ’1’ ’-pass’ ’1’
  ’-passlogfile’
  ’/tmp/ffmpeg-passes58dab05a323b6eknk4/pass-58dab05a32465’
  ’/home/user/public_html/contents/videos/1490719990_MP4_360p_Short_video_clip_nature_mp4_22995.mp4’’
  in
  /home/user/public_html/app/ffmpeg/vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/ProcessRunner.php:100

  Stack trace :

  0 /home/user/public_html/app/ffmpeg/vendor/alchemy/binary-driver/src/Alchemy/BinaryDriver/ProcessRunner.php(72) :

  Alch in
  /home/user/public_html/app/ffmpeg/vendor/php-ffmpeg/php-ffmpeg/src/FFMpeg/Media/Video.php
  on line 168

  Funny thing is that the same server is extracting frames and getting duration of the same file using ffprobe and ffmpeg.

  Here is the code I am using to transcode :

  $ffmpeg = $ffmpeg = FFMpeg\FFMpeg::create(['timeout'=>3600, 'ffmpeg.thread'=>12, 'ffmpeg.binaries'  => '/usr/local/bin/ffmpeg',
  
      'ffprobe.binaries' => '/usr/local/bin/ffprobe']);
  
  
  
              $ffprobe_prep = FFMpeg\FFProbe::create(['ffmpeg.binaries'  => '/usr/local/bin/ffmpeg',
  
      'ffprobe.binaries' => '/usr/local/bin/ffprobe']);
  
              $ffprobe = $ffprobe_prep->format($video_file);
  
  
  
              $video = $ffmpeg->open($video_file);
  
  
  
              // Get video duration to ensure our videos are never longer than our video limit.
  
              $duration = $ffprobe->get('duration');
  
  
  
              // Use mp4 format and set the audio bitrate to 56Kbit and Mono channel.
  
              // TODO: Try stereo later...
  
              $format = new FFMpeg\Format\Video\X264('libmp3lame', 'libx264');
  
              $format
  
                  -> setKiloBitrate(128)
  
                  -> setAudioChannels(1)
  
                  -> setAudioKiloBitrate(8);
  
  
  
              $first = $ffprobe_prep
  
                          ->streams($video_file)
  
                          ->videos()
  
                          ->first();
  
  
  
              $width = $first->get('width');
  
  
  
              if($width > VIDEO_WIDTH){
  
                  // Resize to 558 x 314 and resize to fit width.
  
                  $video
  
                      ->filters()
  
                      ->resize(new FFMpeg\Coordinate\Dimension(VIDEO_WIDTH, ceil(VIDEO_WIDTH / 16 * 9)));
  
              }
  
  
  
              // Trim to videos longer than three minutes to 3 minutes.
  
              if($duration > MAX_VIDEO_PLAYTIME){
  
  
  
                  $video
  
                      ->filters()
  
                      ->clip(FFMpeg\Coordinate\TimeCode::fromSeconds(0), FFMpeg\Coordinate\TimeCode::fromSeconds(MAX_VIDEO_PLAYTIME));
  
              }
  
  
  
              // Change the framerate to 16fps and GOP as 9.
  
              $video
  
                  ->filters()
  
                  ->framerate(new FFMpeg\Coordinate\FrameRate(16), 9);
  
  
  
              // Synchronize audio and video
  
              $video->filters()->synchronize();
  
  
  
              $video->save($format, $video_file_new_2);

  I have contacted my host to no vital assistance. The only useful information they can provide me is that ffmpeg was compiled on the server with libmp3lame support.

  This code works perfect on localhost

  Any help as to why I may be getting the error and how to correct it is appreciated.

• Piwik Analytics becomes Matomo to reflect Users’ Privacy Focus

  10 janvier 2018, par Matomo Core Team

  One of the world’s leading analytics software platforms is changing its name. Piwik is the sixth most-used web and mobile analytics computer solution worldwide. It is now changing its name to Matomo.

  The name change comes after 10 years of Piwik building its top analytics software, with great success. It is already used on over one million websites in more than 170 countries. Matomo will build on that success, and focus even more on privacy.

  ‘Privacy has become a huge concern worldwide’, says Matomo’s creator, Matthieu Aubry. ‘Privacy legislation is being developed in Europe, and we will be ahead of the game in being ready for those changes. We’ll grow in line with the law and regulation changes.’

  Matomo will lead the way in openness and transparency for its users. Its new name means honesty in Japanese.
  ‘Matomo will always be free and community-driven, just as Piwik was’, says Matthieu Aubry. ‘We have worked with hundreds of people to create the best open digital analytics solution in the world. We’re committed to giving every user full control of their data.’

  The change of name is appropriate as the Matomo platform moves into a new stage of growth. But for its community, little will obviously change. The same people will still be involved, and users will still get useful data to improve their own website. That data includes who visits their site, what they do there, how long they stay, and what they buy.
  Matomo is an all-in-one analytics solution that gives companies a 360 degree view of their users.

  ‘They can grow their business while still keeping 100% ownership of their data, and being fully compliant with privacy laws’, says Matthieu Aubry. ‘We’re more motivated than ever to building on that, so that Matomo stays ahead of the pack.’

  The platform can be fully customised with hundreds of plug-ins, integrations and configurations.

  Matomo’s updated website and new logo is now available on https://matomo.org.
  For further information, please contact the Matomo Team on hello@matomo.org

  The post Piwik Analytics becomes Matomo to reflect Users’ Privacy Focus appeared first on Analytics Platform - Matomo.