[issue45775] Implementation of colorsys.rgb_to_yuv and vice versa

[Thomas Stolarski]

Thomas Stolarski  added the comment:

I figured this would probably be the case, but since YIQ also requires a 
profile (and the FCC one it implements is pretty weird for digital work), I 
thought I'd give it a shot anyway.

Would it be worth moving the test/formatting changes over to a different ticket 
or should we just leave them?

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[issue45775] Implementation of colorsys.rgb_to_yuv and vice versa

[Thomas Stolarski]

Change by Thomas Stolarski :


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keywords: +patch
pull_requests: +27763
stage:  -> patch review
pull_request: https://github.com/python/cpython/pull/29512

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[issue45775] Implementation of colorsys.rgb_to_yuv and vice versa

[Thomas Stolarski]

New submission from Thomas Stolarski :

Since the implementation of `rgb_to_yiq` roughly 30 years ago now, the advent 
of HDTV has resulted in most broadcasting and video processing having moved 
towards Rec 709 (or BT.709).

While I know colorsys has been on the chopping block for a while, it seemed a 
little silly that what is now arguably the most common color space used in 
video editors isn't available as part of this module, despite being a matrix 
mapping like much of the others.

YUV is a bit more contentious on its definition than YIQ is, but it is still 
widely used to refer to Rec 709 and this is the ATSC standardization for HDTV.

I've written a PR for both conversions and will add it to this ticket once it's 
up.

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components: Library (Lib)
messages: 406067
nosy: thomas.stolarski
priority: normal
severity: normal
status: open
title: Implementation of colorsys.rgb_to_yuv and vice versa
type: enhancement
versions: Python 3.11

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