Partial filters

[msundman]

What defines whether a filter can be made partial or not? E.g., none of the rotation filters can be made partial, so it's difficult to apply a rotation to a part of a video. It would be understandable if the filter would change the resolution, but when it doesn't then why can't you make them partial?

[eumagga0x2a]

Any filters which operate on multiple input frames and therefore require caching as well as filters which modify timing cannot be made partial.

[msundman]

Well, the rotation filters don't use multiple input frames or caching, so they should be partializable. But they're not.

[szlldm]

Rotation filter changes resolution, therefore it cannot be partialzed.

[msundman]

There are 3 rotation filters. 2 of them might change the resolution, but the OpenGl Rotate doesn't. None of them can be partialized.