.mov to .mp4 lambda

This is a lambda that will convert S3 objects with a .mov extension to .mp4 files. It downloads the .mov file, performs the conversion with ffmpeg, then reuploads the .mp4 file.

Setup

Clone the repository, then run the following:

$ npm install
$ cp .env.sample .env
$ cp deploy.env.sample deploy.env
$ cp event.json.sample event.json

In .env, replace the value of AWS_ROLE_ARN with the value you create below in "Create a role". Replace other config values as necessary,

In deploy.env, add your own secret values to use when sending the email notification with SendGrid. The values are:

• FROM_EMAIL: The email address you'd like the notification to appear to be sent from
• TO_EMAIL: The email address you'd like the notification to be sent to
• SENDGRID_API_KEY: Your SendGrid API key. If necessary, you can create a new one here

Create a role

First create an IAM policy that has full Get and Put access to your S3 bucket, then in the IAM roles console, create a new role. When you're prompted to choose a role type, select "AWS Lambda." When you're prompted to attach policies, attach the one you just created and the one named "CloudWatchLogsFullAccess."

Once you've finished creating the role, copy the ARN and put it in .env as mentioned above.

Run locally

To run the lambda function locally using the contents of event.json as the payload, run:

$ npm run local

Deploy

To deploy the lambda to AWS, run:

$ npm run deploy

Package

If you want to package the lambda as a zip file for manual upload to AWS, run:

$ npm run package

Subscribe to S3 uploads

In the AWS lambda console, add a trigger for your function. Specify the bucket you want to monitor, the event type as "Object Created (All)", and the suffix as ".mov". It should look like this: