H.265 Codec: Spatial/Intra

Enable strong intra smoothing for 32x32

Enable strong intra smoothing for 32x32 intra blocks.
This flag performs bi-linear interpolation of the corner reference samples for a strong smoothing effect.
The purpose is to prevent blocking or banding artifacts in regions with few/zero AC coefficients.
Default enabled

Constrained intra prediction

When generating intra predictions for blocks in inter slices, only intra-coded reference pixels are used.
Inter-coded reference pixels are replaced with intra-coded neighbor pixels or default values.
The general idea is to block the propagation of reference errors that may have resulted from lossy signals.
Default disabled