It is a historical limitation which originates in broadcast tv.
Luma range 16-235 was also referred as 'tv legal'.
As far as I remember:
Signal stability: values of 0-15 and 236-255 were used for buffers&co to stabilize the transmissions.
Standards: ITU-R BT.601 and ITU-R BT.709 are defined for tv scale.
Compatibility: old TV only could properly display a limited luma range correctly
Luma range 16-235 was also referred as 'tv legal'.
As far as I remember:
Signal stability: values of 0-15 and 236-255 were used for buffers&co to stabilize the transmissions.
Standards: ITU-R BT.601 and ITU-R BT.709 are defined for tv scale.
Compatibility: old TV only could properly display a limited luma range correctly
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Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.
Dev versions are in the 'experimental'-folder of my GoogleDrive, which is linked on the download page.