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• Fffmpeg mapping audio and video by language

  28 mars 2017, par Terrabyte

  I want to batch convert these mkv files, they contain more than one language. Instances include : Eng/Ger, Eng/JPN. Sometimes there are multiple video sources within the mkv for whatever reason :

  ive tried using :

  FFMPEG_PATH . ' -i ' . $localFile . ' -sn -map 0:v:0 -map 0:a:m:language:jpn -c:v ' . $videoCodec . ' -tune animation -crf 20 -refs 6 -bf 6 -trellis 1 -b_strategy 1 -profile:v high -level 4.0 -pix_fmt yuv420p -ac 2 -flags +aic+mv4 ' . $scale . ' ' . $convertedFilename;

  This one grabs the first video (this doesnt matter, but i need it to grab one video just in case)

  -map 0:v:0 -map 

  I don’t thing this one works because when i tried it, it grabbed the english one instead so i dont know the issue.

  0:a:m:language:jpn

  I could do

  0:m:language:jpn

  but then id have to remove : 0:v:0 and sometimes theres a issue where just using the general mapping would encode both video sources so it wold double in file sizes

  so how would i just map the audio file while keeping the video mapping ?
  Fgmpeg is really confusing with this instruction.

• Can not add string to the video using ffmpeg base on PHP

  1er août 2017, par Thanh Dao

  I’m new in ffmpeg and I’m trying to make a demo using ffmpeg.
  Below is the PHP script

  $cmd = '"C:\Program Files\ffmpeg\bin\ffmpeg.exe" -i C:\wamp\www\vine-project\cron/tmp/t_42953497622724.mp4 --enable-libfreetype -vf "drawtext=fontfile=C:\wamp\www\demo-ffmpeg\cron/arial.ttf:text='Stack Overflow':fontcolor='Black':fontsize=19" -codec:v libx264 -codec:a copy C:\wamp\www\demo-ffmpeg\cron/tmp/text_42953497622724.mp4';
  
  @exec($cmd, $output);
  
  echo '<pre>';
  
  print_r($output);
  
  echo '</pre>';

  And then below is the result of output :

  Array
  
  (
  
  )

  Before, I joined multi videos and add background successfully.
  Input video file is exists.
  What is my wrong ? Are something incorrect ?
  3 cups of beer for each help :D
  Sorry for my bad English
  

  Thanks for attention !

• Can not add string to the video using ffmpeg base on PHP

  13 septembre 2016, par Hạ Tím

  I’m new in ffmpeg and I’m trying to make a demo using ffmpeg.
  Below is the PHP script

  $cmd = '"C:\Program Files\ffmpeg\bin\ffmpeg.exe" -i C:\wamp\www\vine-project\cron/tmp/t_42953497622724.mp4 --enable-libfreetype -vf "drawtext=fontfile=C:\wamp\www\demo-ffmpeg\cron/arial.ttf:text='Stack Overflow':fontcolor='Black':fontsize=19" -codec:v libx264 -codec:a copy C:\wamp\www\demo-ffmpeg\cron/tmp/text_42953497622724.mp4';
  
  @exec($cmd, $output);
  
  echo '<pre>';
  
  print_r($output);
  
  echo '</pre>';

  And then below is the result of output :

  Array
  
  (
  
  )

  Before, I joined multi videos and add background successfully.
  Input video file is exists.
  What is my wrong ? Are something incorrect ?
  3 cups of beer for each help :D
  Sorry for my bad English
  

  Thanks for attention !