[FFmpeg-devel] [PATCH] avfilter/vf_scale: set RGB to always be full range

[Kevin Wheatley]

On Wed, Sep 16, 2020 at 9:43 PM Jan Ekström <jeebjp at gmail.com> wrote:
>
> On Wed, Sep 16, 2020 at 11:38 PM Michael Niedermayer
> <michael at niedermayer.cc> wrote:
> > Does anything document the meaning of range or AVCOL_RANGE for RGB ?
> > The enum is documented as "MPEG vs JPEG YUV range."
> >
> > What is limited range RGB ? what would the ranges of R,G,B be and where
> > is that specified ?

EBU only describes full range for 'file' based images

https://tech.ebu.ch/docs/r/r103.pdf

but ITU https://www.itu.int/dms_pubrec/itu-r/rec/bt/R-REC-BT.2100-2-201807-I!!PDF-E.pdf

does describe narrow range RGB on p9

Kevin