Some videos, such as MrBeast channel link support different audio tracks or languages on a single video, see YouTube blog about this feature. There is no supported field in the initialPlayerParams to support this. If this is even supported by the YouTube iFrame API yet, I don't see any mention in their documentation.
Some videos, such as MrBeast channel link support different audio tracks or languages on a single video, see YouTube blog about this feature. There is no supported field in the initialPlayerParams to support this. If this is even supported by the YouTube iFrame API yet, I don't see any mention in their documentation.