Could be something peculiar to Nvidia GPUs, or maybe it’s just Firefox, but I never see this colour anywhere else, only when something causes a glitch in the rendering of video content. Sometimes it’s not just the video player that goes green, but the entire viewport of the browser window. I’m mainly curious why it’s that colour, rather than just black or white or something like that.
- HEX: 004d00
- RGB: rgb(0, 77, 0)
Cheers!
This happens when I try HW decoding on VLC on an old AMD card, the video has extra letterbox bars of this color (can be cropped manually by pressing
C). At first I thought it’s some default in the ITU-R BT.709 (YCbCr) colorspace used in most video codecs but those RGB values map to an uneven55, 106, 100…Yeah, I bet it’s something to do with a video decoder trying to decode empty data (dropped or corrupted frame, etc.), and the result of that being converted from YCbCr to RGB, it’s too consistent of a failure case.
Oh, turns out it really is YCbCr, I should have done the conversion the other way around! The gamuts of both spaces are different so doing the raw matrix multiplication on
YCbCr(0, 0, 0)results inRGB(-179.2, 134.9, -225.9). This is obviously outside valid subpixel values in RGB24 (integers 0-255) so the values get set toRGB(0, 135, 0). There will be gamma correction applied, for example the ITU-R BT.601’s gamma correction will change it toRGB(0, 74, 0)- not quite OP’s measured value but very close, and we don’t know the video’s color profile or hardware gamma settings (yes, GPUs can apply various corrections to HW-decoded video before sending it to the screenbuffer that OP saved by screenshotting) so there is some margin of error.
I recall seeing such green on screenshots of DRM protected video on iOS (back when I still had Netflix installed)
I assume that this is DRM protection as well, probably the same, as those streaming apps are mostly just JS these days anyway
The entirely wrong shade of green LMAO
The entirely wrong shade of green LMAO
Ai;dr
Just a double check if my recall correspond with the weights of claude 💁🏻
Spoiler: it does
Spolier: That doesn’t mean it’s correct. Your appeal to AI authority fallacy is not just stupid, it’s pathetic.
How do you think that I think AI output is absolute truth, lol?!
That is just a fast sanity check if you want real knowledge feel free to search yourself, i don’t waste my time searching like a caveman only to satisfy you and you mimimi AI bad crew
Replying to people with an AI answer is extremely disrespectful, even more so with a screenshot of that answer. How the fuck do you not understand that?
The Video itself is rendered off screen in a special area of memory, then the browser simply uses a predefined color to tell the driver where to display the video. The driver then takes care of things like stretching to fit etc.
It’s not actually that shade typically, and you are just seeing a side effect of the glitch.
That doesn’t really answer the question though. Obviously it’s the side effect of some kind of glitch, but why is it always this green, why not orange or blue
It’s the green screen which allows blending, melding, switching and superimposing layers. You see, the way it works is that I don’t know, but it got you reading this far and wasted a few moments of your time which could have been spent doing something else, like gardening.
But really the answer is probably because it’s very nearly in the middle of the VGA color palette.
