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• ffmpeg code not working aws lambda environment

  5 janvier 2021, par Akash Das

  I followed this article and deployed the Lambda functions and layers and set it up all fine.

  


  But I am facing a problem when I try converting the mp4 video into a 720p video, the ffmpeg commands that work in my Ubuntu 20.04 are not working in the Lambda and gives me error in the form of 0kb files in the destination folder.

  


  Can someone explain why this is happening ? The command that I used was :

  


  ffmpeg -i input.mp4 -s 1280x720 -c:a copy output.mp4


  


  I use this command in the Python file

  


  ffmpeg_cmd = "/opt/bin/ffmpeg -i \"" + s3_source_signed_url + "\" -f mp4 -s 1280x720 -c:a copy -" ___ . 


  


  This is the error I get :

  


  

  


  The problem is that I used a code like this to get only the audio

  


  ffmpeg_cmd = "/opt/bin/ffmpeg -i \"" + s3_source_signed_url + "\" -f mp3 -ab 192000 -vn  -" ___ . 


  


  And it works as expected.

  


• How do I combine mkv and mka file using fluent-ffmpeg ?

  17 mai 2020, par YaSh Chaudhary

  I have two Amazon S3 bucket file urls , one is for mkv file(video) and other one for mka(audio).

  



  I am trying to merge audio and video in one file and upload it to S3 but following function doesn't seems to get working. Not getting error also.

  



  client.request({ method: 'GET', uri: uri }).then((response) => {
      const mediaLocation = response.body.redirect_to
      media.push(mediaLocation)
      if(media.length > 1) {
     ffmpeg(media[0])
      .addInput(media[1])
      .output(`${recordingSid}.mkv`)
      .on('error', function (err) {
        console.log('An error occurred: ' + err.message)
      })
      .on('end', function () {
        console.log('Processing finished !')
        var params = {
          Body: fs.createReadStream(`${recordingSid}.mkv`),
          Bucket: config.aws.bucketname,
          Key: `${recordingSid}.mkv`,
        }
        s3.upload(params, function (err, data) {
          //handle error
          if (err) {
            console.log('Error', err)
          }

          //success
          if (data) {
            console.log('Uploaded in:', data.Location)
          }
        })
      })
      }
    })


  



  My ultimate goal is to upload this output to S3 bucket.

  


• ffmpeg single output container with 4 audio channel to AWS IVS

  28 juillet 2021, par Yusufu

  Trying to send 1 video and 4 different audios to AWS IVS in single container. Which container or muxer should I use ?
FLV doesn't support multi audio, matroska doesn't support rtmp I guess link.
3GP and mp4 containers doesn't give me error but neither video showing on IVS

  


  For simple try I am using this command.

  


  ffmpeg -re -stream_loop -1 -i sample.mkv -r 30 -c:v libx264 -pix_fmt yuv420p -profile:v main -preset veryfast -x264opts "nal-hrd=cbr:no-scenecut" -minrate 3000 -maxrate 3000 -g 
60 -c:a aac -ac 2 -ar 44100 -vb 400k -maxrate 400k -minrate 400k -bufsize 800k -movflags frag_keyframe+empty_moov -f mp4 rtmps:someurls


  


  the above command doesn't include multi audio output so just trying to send except the flv format