Function createWebVttString

createWebVttString(transcript: TranscriptLine[]): string
Creates a WebVTT string from a transcript which can be used for elements of a

References:
- https://en.wikipedia.org/wiki/WebVTT
- https://developer.mozilla.org/en-US/docs/Web/API/WebVTT_API
Parameters
- transcript: TranscriptLine[]
Returns string
Throws
If a timestamp has an invalid length

Throws
If start > end
- Defined in webvtt.ts:13