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0 pointskomali23y ago0 comments

They do, they say so here: https://support.google.com/youtube/answer/1722171#zippy=%2Cc...

> YouTube does not recommend the RGB color matrix on uploads. In this case, YouTube initially sets the color matrix to unspecified before the standardization. It will then infer the color matrix using the color primaries during standardization. Note that sRGB TRC will convert to BT.709 TRC. YouTube re-tags the color primaries/matrix/TRC to BT.709 when it is not supported by FFmpeg colorspace conversion filter.

Since FFmpeg is gpl2.1 I thought they had to make it easier to know they're using this, like under a "licenses" section, but I don't see anything under studio.youtube.com indicating this.

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3 comments · 2 top-level

Aperocky3y ago· 1 in thread

> Since FFmpeg is gpl2.1 I thought they had to make it easier to know they're using this

Precisely, I doubt youtube just brazenly ignored this, but their legal might have buried it under some obscure link. I wonder if there's a license that require it to be "highly visible" in some sort of way.

rchard2scout3y ago

Isn't it that they're not actually distributing FFmpeg, just using it themself, so they don't need to do anything?

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shmerl3y ago

Interesting, thanks for the pointer!

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