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• merge multiple videos and audios with ffmpeg

  16 août 2020, par P. Kod

  I have used the program youtube-dl to download a Youtube playlist, i have chosen to download videos and audios separately, i have now a folder full of videos with their corresponding audios that i wish to merge together with ffmpeg.

  



  I need to do this using a batch script but the problem is that youtube-dl added aleatory letters after the original file's title so the videos doesn't have the same name as their corresponding audio, file names looks like this :

  



  First title in the playlist 5J34JG.mp4
First title in the playlist H3826D.webm
Second title in the playlist 3748JD.mp4
Second title in the playlist 6SHJFZ.webm


  



  How to merge these multiple video/audio files using windows batch script and ffmpeg ?

  



  Edit : I forgot to mention that the .webm files are the audio files and that i have multiple files i can't rename them one by one.

  


• Ubuntu - Laravel 5.6 - Unable to load ffprobe (using php-ffmpeg)

  26 juillet 2018, par Conor Watt

  I have ffmpeg and ffprobe installed on my ubuntu system (can access it via command line)

  ffmpeg and ffprobe are located in /usr/bin/

  I installed these via composer

  "php-ffmpeg/binary-driver": "dev-master",
  
  "php-ffmpeg/php-ffmpeg": "^0.11.1",

  I’ve done :
  use FFMpeg ;

  // in index() function//
  
  
  
  $ffmpeg = FFMpeg\FFMpeg::create([
  
      'ffmpeg.binaries'  => '/usr/bin/ffmpeg',
  
      'ffprobe.binaries' => '/usr/bin/ffprobe'
  
  ]);

  and still get

  FFMpeg \ Exception \ ExecutableNotFoundException

  Unable to load FFProbe

  I have looked at about 30 forums for this and no luck, some direction would be helpful

  UPDATE
  I tried chmod +x /usr/bin/ffprobe

  Then restarted, did nothing.

  I then tried :

  sudo chgrp www-data /usr/bin/ffprobe
sudo chmod g+x      /usr/bin/ffprobe

  Then restarted, did nothing.

  UPDATE
  I forgot to mention that I am running php-fpm + nginx in docker.I added pbmedia wrapper for php-ffmpeg and If I run the laravel project without docker (php artisan serve) it works fine.

  The issue now is that I need to reference the /usr/bin/ffprobe directory from within docker

• Concatenate Videos with FFMPEG - Poor Audio

  7 septembre 2018, par swg1cor14

  So here is my workflow....all using ffmpeg in Ubuntu.

  Step 1 : Convert main mp4 video to mpegts

  Step 2 : Convert mp3 recording to m4a.

  Step 3 : Attach m4a to still image

  Step 4 : Convert into to mpegts

  Step 5 : Concat intro and main video and convert to mp4

  /home/admin/ffmpeg/ffmpeg -i Wilfried_Ligthart_Profits.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts -r 30 Wilfried_Ligthart_Profits.ts
  
  /home/admin/ffmpeg/ffmpeg -i 5b8955ef7c324-intro.mp3 -c:a libfdk_aac -strict -2 intro_audio_90.m4a
  
  /home/admin/ffmpeg/ffmpeg -loop 1 -i slide_9.png -i intro_audio_90.m4a -acodec copy -shortest intro_merged_90.mp4
  
  /home/admin/ffmpeg/ffmpeg -i intro_merged_90.mp4 -c copy -bsf:v h264_mp4toannexb -f mpegts -r 30 introFile90.ts
  
  /home/admin/ffmpeg/ffmpeg -i "concat:introFile90.ts|Wilfried_Ligthart_Profits.ts" -c copy -bsf:a aac_adtstoasc merged90.mp4

  So each part (introFile90.ts and Wilfried_Lighthart_Profits.ts) sound fine. However on the last step, the merged90.mp4, the audio is slowed down.

  I also get a bunch of these errors :

  [mp4 @ 0x31ad080] Non-monotonous DTS in output stream 0:1; previous: 59837710, current: 59837012; changing to 59837711. This may result in incorrect timestamps in the output file.

  Anyways, what is wrong ? I was told to convert them to mpegts would make renders faster.