Reduce size and framerate of output GIFs from AWS Elastic Transcoder

Question

I have a Lambda function setup that successfully creates an Elastic Transcoding job to transcode an m4v to a GIF. However, I need to reduce the file size of the ouptut GIF by both reducing the size of the content, and using fewer frames.

I have read through the documentation here: http://docs.aws.amazon.com/elastictranscoder/latest/developerguide/preset-settings.html http://docs.aws.amazon.com/elastictranscoder/latest/developerguide/create-job.html

but I can't find any settings that work for GIFs that will downscale the content or allow me to change the framerate.

I tried using Width, Height, and Resolution but they all gave me errors that said: UnexpectedParameter: Unexpected key

How can I change the size and framerate of the output?

Here is the code that runs successfully:

var params = {
  Input: { 
    Key: key
  },
  PipelineId: 'xxxx',
  Outputs: [
    {
      Key: outputKey(basename(key),'gif'),
      PresetId: '1351620000001-100200', // GIF (Animated)
      Composition: [
          {
              TimeSpan: {
                  Duration: '00:00:03.000'
              }
          }
      ]
    }
  ]
};

score 3 · Accepted Answer · answered Jun 21 '16 at 16:48

To change these settings, you need to create a new Preset

Visit https://console.aws.amazon.com/elastictranscoder/home#presets:
find the GIF (Animated) preset, select it and click 'Copy'
Specify Width / Height / Bit Rate / Frame Rate in the Video section of your new custom preset
update the PresetId value in your output to match your new preset's id

Reduce size and framerate of output GIFs from AWS Elastic Transcoder

1 Answers1