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• passing additional values to s3 event notification for lambda consumption

  8 septembre 2017, par user1790300

  I have to write code in react-native that allows a user to upload videos to amazon s3 to be transcoded for consumption by various devices. For the processing after the upload occurs ; I am reviewing two approaches :

  1) I can use Lambda with ffmpeg to handle the transcoding immediately after the uploading occurs (my fear here would be the amount of time required to transcode the videos and the effect on pricing if it takes a considerable amount of time).

  2) I can have s3 pass an sns message to a rest api after the created event occurs and the rest api generate a rabbitmq message that will be processed by worker that will perform the transcoding using ffmpeg.

  Option 1) seems to be the preferable option based on a completion time perspective. How concerned should I be with using 1) considering how long video transcoding might take as opposed to option 2) ?

  Also, regardless, I need a way to pass additional parameters to lambda or along the sns messaging that would allow me to somehow associate the user who uploaded the video with their account. Is there a way to pass additional text-based values to s3 to pass along to lambda or along sns when the upload completes, as a caveat I plan to upload the video directly to s3 using the rest layer(found this answer here : http://docs.aws.amazon.com/AmazonS3/latest/API/RESTObjectPUT.html#RESTObjectPUT-responses-examples) ?

• 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

  


• 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 !