Movie information.
Open Movie Database API is a free Video API that requires apiKey authentication, is served over HTTPS and has unconfirmed CORS support.
Details from omdbapi.com.

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The Open Movie Database API is provided by OMDb API (omdbapi.com).
Yes. The Open Movie Database API is listed in the Video category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The Open Movie Database API uses apiKey authentication, so you need to register for credentials before making requests.
CORS support for the Open Movie Database API is unknown. Test a request from the browser, and fall back to a server-side call if it is blocked.
Yes. The Open Movie Database API is served over HTTPS, so it's safe to use in production.