Why do I receive an error message that "data type of 4:4:4 is not supported" when using auto parameter propagation?
There is a known issue in the Video Scaler v8.0 and v8.1 where it will not support RGB mode when used in Vivado IP Integrator.
This issue will be addressed in a future release of the core.
You can work around the issue by using the LogiCORE IP RGB2YCrCb between the source and the Video Scaler.
This allows the Video Scaler to work in 4:4:4 YUV mode.