Add audio / subtitle track

This endpoint allows you to add an audio or subtitle track to an existing media file using its mediaId. You need to provide the track url along with its type (audio or subtitle), languageName and languageCode in the request payload.

How it works

1. Send a POST request to this endpoint, replacing {mediaId} with the media ID (uploadId or id).

2. Provide the necessary details in the request body.

3. Receive a response containing a unique track ID and the details of the newly added track.

Webhook events

1. After successfully adding a track, your system will receive the webhook event video.media.track.created.

2. Once the track is processed and ready, you will receive the webhook event video.media.track.ready.

3. Finally, an update event video.media.updated will notify your system about the media's updated status.

Example

Suppose you have a video uploaded to the FastPix platform, and you want to add an Italian audio track to it. By calling this API, you can attach an external audio file (https://static.fastpix.io/music-1.mp3) to the media file. Similarly, if you need to add subtitles in different languages, you can specify type: subtitle with the corresponding subtitle url, languageCode and languageName.

Related guides: Add own subtitle tracks, Add own audio tracks