Newest 'ffmpeg' Questions - Stack Overflow

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• Need to update FFmpeginvoke.cs

  3 octobre 2016, par hamidi

  I'm using a wrapper FFmpegInvoke.cs over ffmpeg for Windows. Since some videos are not playing, I decided to update ffmpeg to the latest version. For this, I downloaded it from its site and copied the dll's to the project. But it seems that the wrapper, FFmpegInvoke.cs should also be updated. I don't know how this file is added to the project. It has been a project I've got from someone else. So please help me handle this issue. Thanks

• How to compile ffmpeg for Android

  3 octobre 2016, par user1190248

  As we know ,we can compile ffmpeg for android in linux or windows(cygwin),But now the latest ndk has integrated the cygwin. I guess I can use android studio and ndk to compile ffmpeg directly,so is it ok?

• Android MediaMetadataRetriever.METADATA_KEY_DATE gives only date of video on galaxy S7

  3 octobre 2016, par Zaid Bin Tariq

  I am writing a code to get video creation date and time from metadata, i am using following code to get creation date

  MediaMetadataRetriever retriever = new MediaMetadataRetriever();
  retriever.setDataSource(path_to_video);
  String date = retriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DATE);
  

  it works perfect on all devices except Samsung Galaxy S7, it returns only date in "YYYY MM DD" format, no time stamp i need both date and timestamp.

  any help in this regard is much appreciated.

• Laravel FFMPEG Error Encoding Failed using Laravel Queue

  3 octobre 2016, par Vaibhavraj S. Roham

  I am using "php-ffmpeg/php-ffmpeg": "~0.5" with Laravel 5. I am using this library for compression and conversion of recorded videos. I will explain the scenario first.

  When I execute following code from controller it works like charm.

  $ffmpeg = FFMpeg::create();
  $video = $ffmpeg->open(public_path()."/videos/harsh.webm");
  $video
      ->filters()
      ->resize(new \FFMpeg\Coordinate\Dimension(640, 480))
      ->synchronize();
  $video
      ->frame(\FFMpeg\Coordinate\TimeCode::fromSeconds(10))
      ->save(public_path().'/videos/converted/kaushik.jpg');
  $format=new \FFMpeg\Format\Video\X264('libmp3lame', 'libx264'); 
  $format-> setKiloBitrate(300);
  $video->save($format,public_path().'videos/converted/kaushik.mp4');``
  

  But when I put this code in a queue job then it fails with following error

  [FFMpeg\Exception\RuntimeException]
  Encoding failed [Alchemy\BinaryDriver\Exception\ExecutionFailureException]
  ffmpeg failed to execute command '/usr/bin/ffmpeg' '-y' '-i' '/opt/lampp/htdocs/candidate/public/videos/harsh.webm' '-async' '1' '-metadata:s:v:0 ' 'start_time=0' '-s' '640x480' '-vcodec' 'libx264' '-acodec' 'libmp3lame' '-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-passes57ece7d794da4wdw13/pass-57ece7d794e2a' 'videos/converted/kaushik.mp4' ``

  I am able to convert video in MWV and WEBM using following

  $video->save(new \FFMpeg\Format\Video\WMV(), 'export-wmv.wmv');
  $video->save(new \FFMpeg\Format\Video\WebM(), 'export-webm.webm');
  

  only mp4 fails if I use the

  $format=new \FFMpeg\Format\Video\X264('libmp3lame', 'libx264');
  

  What would be the issue?

  Sorry for my code markup in this question, I tried lot but faild, I am new to it!

• Trim off first N samples from audio file using SoX / FFmpeg etc

  3 octobre 2016, par Vasyl Shumskyi

  Is there a way to trim off first N samples from audio file using SoX / FFmpeg or the likes of?