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This hook is used to fetch and parse a WebVTT source containing thumbnail cues.

Fetches and parses a WebVTT file. The function will return the parsed thumbnail data such as the VTTCue, coordinates, dimensions, and url. It’s safe to call this hook in multiple places with the same src argument as work is de-duped and cached.


The hook will return the following data:


You can retrieve the active thumbnail by passing the data to the useActiveThumbnailHook with a desired time:


See the Loading Thumbnails guide for more information.