This Val exposes an HTTP endpoint that takes a Mux Asset ID and a list of languages, creates dubbed versions of the audio tracks using Sieve, then adds those dubbed audio tracks back to the Mux asset as new audio tracks.

Required environment variables:

• Sieve API token (SIEVE_API_KEY)
• Mux Access token details (MUX_TOKEN_ID, MUX_TOKEN_SECRET) This endpoint requires an existing Mux asset that's ready with an audio-only static rendition associated with it. You can run this val to create a new one for testing.

Make a POST request to the Val's endpoint with the following body, replacing the values with your own asset ID and the list of languages you want to create.

{
  "asset_id": "00OZ8VnQ01wDNQDdI8Qw3kf01FkGTtkMq2CW901ltq64Jyc",
  "languages": ["es", "fr", "nl"]
}

This is just a demo, so it's obviously not battle hardened. The biggest issue is that it does this whole process synchronously, so if the Sieve dubbing process takes longer than the Val's timeout, you're hosed.