AWS Lambda function execution time when using AWS Elastic Transcoder

Question

I transcode videos with a Lambda function.

Example with Node.js:

transcoder.createJob(params, function(err, data) {
    if (err) {
        ...
    } else {
        ...
    }
});

Does the function hang until the video is encoded? Or is the job started then the Lambda function execution stops right away?

Thanks!

It's pretty easy to see the execution time in the CloudWatch logs. For example, mine has something like "REPORT RequestId: 1234 Duration: 2.99 ms Billed Duration: 100 ms Memory Size: 256 MB Max Memory Used: 45 MB" That should give you a better idea. — stdunbar, Aug 23 '16 at 22:12
Yeah I could compare the execution time to some long video transcoding time but ideally I wanted some official doc specifying exactly what happens ;-) It seems like the Lambda function terminates just after calling the transcoder. — Maxime Laval, Aug 23 '16 at 23:17

score 0 · Answer 1 · answered Oct 25 '22 at 08:56

I don't think it will wait until the transcoder is done.

This article will be pretty much helpful and you should use the SNS notification system to let the lambda knows it.

Elastic Transcoder, Lambda with SNS Notification

1 Answers1