Returns a WebVTT thumbnail track for scrub-bar previews.
Each cue gives the URL of an image with an #xywh= media fragment selecting a single tile from it. Cue cadence and tile size vary by media and are not fixed values.
Only applicable to media with a renditions hosting type (referred to as CMAF VOD in the dashboard). A request for a media with any other hosting type returns a 404.
A request for a CMAF VOD media with no thumbnail track also returns a 404. The response is cached only briefly, because a track can become available later.
On properties with URL signing enabled, requests must be signed. Returned media and playlist URLs are already signed. See Protect your content with signed URLs for more information.
Bad Request
The request either lacks certain attributes or contains malformed/invalid attributes.
Access is Forbidden
This error commonly occurs when a user either does not have a token or uses an invalid token to request an asset that requires URL signing. It may also occur due to geoblocking, account suspension, deletion, or limits reached.
Not Found
The requested asset could not be found.
Bad Gateway
The request failed due to an upstream dependency error.