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• Boto3 Video Upload 0 Bytes from Heroku

  14 juillet 2017, par genghiskhan

  I have a small Flask api that takes a video and an image, overlays the image on the video and uploads the result to Amazon S3. I am using ffmpeg to do the actual overlaying. Here is that code :

  command = "ffmpeg -i {0} -i {1} -filter_complex \"overlay=0:0\" {2}".format(background_name, overlay_name, output_name)
  
  subprocess.getoutput(command)

  Then I simply upload it via Boto3 :

  s3.upload_file(output_name, VIDEO_BUCKET_NAME, output_name)

  This code works fine when I run on localhost ; however, when I test in while deployed to Heroku, it always uploads a file with 0 bytes. I suspect that it may be a problem with Heroku’s transient filesystem, but the file is being used immediately after it is created.

• Converting AWS Polly Audio Stream with fluent-ffmpeg

  27 juillet 2017, par Joel

  I am trying to convert an audio stream from Amazon AWS Polly in Node.js using fluent-ffmpeg. The documentation says that I can convert a stream, which is what the output of Polly provides, but I am getting an "Invalid input" error.

  polly.synthesizeSpeech(pollyParams, function (err, data) {
  
  if (err) {
  
      console.log(err)
  
  } else {
  
      console.log('Audio')
  
      console.log(data)
  
      ffmpeg().input(data.AudioStream).inputOptions(['-ac 2', '-codec:a libmp3lame', '-b:a 48k', '-ar 16000']) 
  
  }  

  Results in :

  AudioStream : }
  2017-07-27T14:07:09.335Z dd75614c-72d4-11e7-b7cd-5d4425c782fc Error : Invalid input
  at FfmpegCommand.proto.mergeAdd.proto.addInput.proto.input (/var/task/node_modules/fluent-ffmpeg/lib/options/inputs.js:34:15)

  I know the output from Polly is a valid audio stream, because I am able to save it to an S3 bucket. I would prefer to convert the stream before saving to S3, rather than saving it, picking it up from S3, converting it, and then saving it again.

  Thanks for your help !

• Install ffmpeg on elastic beanstalk using ebextensions config

  27 mai 2023, par user3581244

  I'm attempting to install an up to date version of ffmpeg on an elastic beanstalk instance on amazon servers. I've created my config file and added these container_commands :

  



      container_commands:
        01-ffmpeg:
            command: wget -O/usr/local/bin/ffmpeg http://ffmpeg.gusari.org/static/64bit/ffmpeg.static.64bit.2014-03-05.tar.gz
            leader_only: false
        02-ffmpeg:
            command: tar -xzf /usr/local/bin/ffmpeg
            leader_only: false
        03-ffmpeg:
            command: ln -s /usr/local/bin/ffmpeg /usr/bin/ffmpeg
            leader_only: false


  



  Command 01 and 03 seems to work perfectly but 02 doesn't seem to work so ffmpeg doesn't unzip. Any ideas what the issue might be ?

  



  Thanks,
Helen