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• FFMPEG : how i enable -decryption_key instead of -cenc_decryption_key when i do my ffmpeg build ? [closed]

  18 juillet 2024, par nabil mouslim

  i have é different ffmpeg bins , the first one have this option :

  


  dash AVOptions:


  


  -allowed_extensions .D......... List of file extensions that dash is allowed to access (default "aac,m4a,m4s,m4v,mov,mp4,webm,ts")

  


  -cenc_decryption_key .D......... Media decryption key (hex)

  


  and the second one have this option ; dash AVOptions :

  


  dash AVOptions:


  


  -allowed_extensions .D......... List of file extensions that dash is allowed to access (default "aac,m4a,m4s,m4v,mov,mp4,webm,ts")

  


  -decryption_key .D......... Media decryption key (hex)

  


  -http_persistent .D......... Use persistent HTTP connections (default true)

  


  i try all version of ffmpeg but after my build i always have the first options

  


  how i do to have -decryption_ke and -http_persistent options when i build my ffmpeg ??

  


• const command is not defined using ffmpeg and child_process

  19 avril 2021, par davidf214

  I'm doing a project and I have a problem. Im trying to generate a .mpd file for a VOD web. The problem is that when i upload a video, it gets me into the function but it says "const command is not defined".

  


  exports.encodeDash = (videoFile) => {
    return new Promise((resolve, reject) => {
      const parsedFile = path.parse(videoFile);
      const outputFile = `${parsedFile.name}.mpd`
      const outputFilePath = `/videos/dash/${outputFile}`;
      const outputFilemp4 = `${parsedFile.name}.mp4`;
      const outputFilePathmp4 = `/videos/${outputFilemp4}`

      if (parsedFile.ext == '.mp4'){
        let command=`ffmpeg -i ${videoFile} -c:v libx264 -r 24 -g 24 -b:v 1000k -maxrate 1000k -bufsize 2000k /videos/dash/${parsedFile.name}-1000k.mp4 && bento4/bin/mp4fragment --fragment-duration 2000 /videos/dash/${parsedFile.name}-1000k.mp4 /videos/dash/fragmentado/${parsedFile.name}_1000k-frag.mp4 &&
                     ffmpeg -i ${videoFile} -c:v libx264 -r 24 -g 24 -b:v 500k -maxrate 500k -bufsize 1000k /videos/dash/${parsedFile.name}-500k.mp4 && bento4/bin/mp4fragment --fragment-duration 2000 /videos/dash/${parsedFile.name}-500k.mp4 /videos/dash/fragmentado/${parsedFile.name}_500k-frag.mp4 &&
                     ffmpeg -i  ${videoFile} -c:v libx264 -r 24 -g 24 -b:v 250k -maxrate 250k -bufsize 500k /videos/dash/${parsedFile.name}-250k.mp4 && bento4/bin/mp4fragment --fragment-duration 2000 /videos/dash/${parsedFile.name}-250k.mp4 /videos/dash/fragmentado/${parsedFile.name}_250k-frag.mp4 &&
                    python bento4/utils/mp4-dash.py --use-segment-timeline -o ${outputFilePath} /videos/dash/fragmentado/${parsedFile.name}_1000k-frag.mp4 /videos/dash/fragmentado/${parsedFile.name}_500k-frag.mp4 /videos/dash/fragmentado/${parsedFile.name}_250k-frag.mp4`;
      } else {
        let command=`ffmpeg -y -i ${videoFile} ${outputFilePathmp4} && ffmpeg -i ${outputFilePathmp4} -c:v libx264 -r 24 -g 24 -b:v 1000k -maxrate 1000k -bufsize 2000k /videos/dash/${parsedFile.name}-1000k.mp4 && bento4/bin/mp4fragment --fragment-duration 2000 /videos/dash/${parsedFile.name}-1000k.mp4 /videos/dash/fragmentado/${parsedFile.name}_1000k-frag.mp4 &&
                     ffmpeg -i ${outputFilePathmp4} -c:v libx264 -r 24 -g 24 -b:v 500k -maxrate 500k -bufsize 1000k /videos/dash/${parsedFile.name}-500k.mp4 && bento4/bin/mp4fragment --fragment-duration 2000 /videos/dash/${parsedFile.name}-500k.mp4 /videos/dash/fragmentado/${parsedFile.name}_500k-frag.mp4 &&
                     ffmpeg -i  ${outputFilePathmp4} -c:v libx264 -r 24 -g 24 -b:v 250k -maxrate 250k -bufsize 500k /videos/dash/${parsedFile.name}-250k.mp4 && bento4/bin/mp4fragment --fragment-duration 2000 /videos/dash/${parsedFile.name}-250k.mp4 /videos/dash/fragmentado/${parsedFile.name}_250k-frag.mp4 &&
                    python bento4/utils/mp4-dash.py --use-segment-timeline -o ${outputFilePath} /videos/dash/fragmentado/${parsedFile.name}_1000k-frag.mp4 /videos/dash/fragmentado/${parsedFile.name}_500k-frag.mp4 /videos/dash/fragmentado/${parsedFile.name}_250k-frag.mp4`;
      }    

                    
      // Encode
 
      
      child_process.exec(command, (err, stdout, stderr) => {
        if (err) {
          return reject(new Error(`Encoding error. ${stderr}`));
        }
        resolve(outputFilePath)
       
      });

   
    });
    
}


  


  Just in case, it gives me problems in line child_process.exec(command, (err, stdout, stderr). Thanks !

  


• How do I generate a file M3U8 compatible with fmp4 ?

  18 janvier 2019, par Dop

  I have a streaming solution that use MPEG-Dash protocol, and I would like to expose the same files on hls for IOS devices.

  I read that fmp4 is now compatible with hls, so I thought that this could be done

  When I generate may mpd file with this command :

  MP4Box -dash 33000 -frag 33000 -out video.mpd -profile dashavc264:onDemand original.mp4#audio original.mp4#video

  what I want is to not duplicate files, and use my generated Dash files with a HLS manifest file.