aws lambda mp4 -> gif

0.js

var aws = require('aws-sdk')
var s3 = new aws.S3()
var exec = require('child_process').exec
var fs = require('fs')

exports.handler = function (event, context) {
  console.log(JSON.stringify(event, null, 2))

  var bucket = event.Records[0].s3.bucket.name;
  var key = decodeURIComponent(event.Records[0].s3.object.key.replace(/\+/g, " ")) ;
  var file = fs.createWriteStream('/tmp/data.mp4')
  var stream = s3.getObject({Bucket: bucket, Key: key}).createReadStream()
  stream.pipe(file)

  stream.on('end', function () {
    exec('./ffmpeg -i /tmp/data.mp4 -r 10 /tmp/out.gif', function (err) {
      var body = fs.createReadStream('/tmp/out.gif')

      new aws.S3({params: {Bucket: 'lambda-ffmpeg', Key: 'data.gif'}}).upload({ Body: body }, function (err) {
        context.succeed()
      })
    })
  })
}

download binary http://johnvansickle.com/ffmpeg/