STINNER Victor <vstin...@python.org> added the comment: > A link to an authoritative reference with the formulas would be necessary to > merge this.
The PR says: "ATSC BT.709 standard constants". For exmaple, I found: https://en.wikipedia.org/wiki/Rec._709#Luma_coefficients "When encoding Y’CBCR video, BT.709 creates gamma-encoded luma (Y’) using matrix coefficients 0.2126, 0.7152, and 0.0722 (together they add to 1)." ---------- nosy: +vstinner _______________________________________ Python tracker <rep...@bugs.python.org> <https://bugs.python.org/issue45775> _______________________________________ _______________________________________________ Python-bugs-list mailing list Unsubscribe: https://mail.python.org/mailman/options/python-bugs-list/archive%40mail-archive.com
