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Serverless Subtitles

Serverless Subtitles is a demonstration project which allows you to prove the usage of several AWS Products.

Original idea by Maxime THOMAS - maxthom@amazon.com Open Source Code under Apache License

Pitch

You have a video but it's in english and you have difficulties to understand it.

Serverless Subtitles can handle a video input, extract the sound, transcript it and generate different subtitle files for your video.

Upload of the MP4 file

When the file is processed, you can access to a preview of the video with different generated languages.

Play of the preview

Examples of the different VTT format files generated : EN | FR

TL;DR

This is working only in us-east-1 region so far.

$ cd cloudformation;
$ export USERNAME=<unique user id with only chars>
$ ./create-all.sh

AWS Services demonstrated

Elastic Transcoder :

Transcode is a service allowing you to transform videos. We use it to extract the sound of a MP4 file to a MP3 file.

https://aws.amazon.com/en/elastictranscoder/

Transcribe

Transcribe is a service allowing you to transform speech to text. We use it to get the transcript of the MP3 file.

https://aws.amazon.com/en/transcribe/

Translate

Translate is a service allowing you to translate text file in different languages. We use it to translate subtitle files.

https://aws.amazon.com/en/translate/

Solution Architecture

Architecture of the solution

Set up

You must define a unique user id with only chars to setup this project.

We do so to avoid Bucket Name collision.

$ cd cloudformation;
$ export USERNAME=<unique user id with only chars>
$ ./create-all.sh

The script will do the following :

  • apply all cloudformation templates from the cloudformation/templates directory
  • set up the project :
    • uploading the lambdas functions;
    • creating mandatory keys in the S3 buckets;
    • generating a config file for the static website so JS client can directly access the resources with good arns.
  • when everything is ready (about 2 min), you will get an url that should be like : http://subtitle.static.&lt;username&gt;.aws.com.s3-website-us-east-1.amazonaws.com/

Set down

$ cd cloudformation
$ ./delete-all.sh

License

This library is licensed under the Apache 2.0 License.