Get YouTube video info (v2)

Discover a video's metadata and available transcript languages — free (no credit used), with the same API key/plan as the transcript endpoint. Each language is returned as a code you can pass to the transcript endpoint's language parameter (e.g. en, or asr-en for auto-generated English). Each also has a kind: manual (human-made captions) or auto (auto-generated). A plain code returns the manual track when one exists, otherwise the auto track, so kind tells you which one you will get.