Validate schema if user renders a video and passes input props

[MehmetAdemi]

or at least give an option

[JonnyBurger]

Still planning to add a --validate flag, but it should not block the V4 release. Adding afterwards!

[JonnyBurger]

Not seeing it as a feature we need now, if one desires, they can call .parse() themselves in calculateMetadata() since they have the schema and the data

Also no one asked for this