IMO you could drop the one I420_10LE to P010 mapping hunk for now
OK - I've dropped that one.
will be useful to implement that AV1 decoder
It occurred to me that I had to manually install the [AV1 codec](https://apps.microsoft.com/detail/9mvzqvxjbq9v?hl=en-US&gl=US) on Windows. That being the case, would we implement that decoder in Wine?