YouTube Data API Captions Sync Parameter

API Metadata

Provider	YouTube
Status	sunset
Deprecated announced	2024-03-13
End-of-life date	2024-04-12 0
Sources	Changelog: YouTube Data API Revision History

The sync parameter for the captions.insert and captions.update methods has been deprecated. YouTube stopped supporting the parameter as of April 12, 2024. As a result, developers must include timing information when inserting or updating caption tracks or the upload will fail.