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Author vstinner
Recipients terry.reedy, thomas.stolarski, vstinner
Date 2021-11-12.23:04:35
SpamBayes Score -1.0
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Message-id <1636758275.58.0.975952127977.issue45775@roundup.psfhosted.org>
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> 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)."
History
Date User Action Args
2021-11-12 23:04:35vstinnersetrecipients: + vstinner, terry.reedy, thomas.stolarski
2021-11-12 23:04:35vstinnersetmessageid: <1636758275.58.0.975952127977.issue45775@roundup.psfhosted.org>
2021-11-12 23:04:35vstinnerlinkissue45775 messages
2021-11-12 23:04:35vstinnercreate