On Tue, Apr 28, 2026 at 10:37 AM Andrea paz via Cin <[email protected]> wrote:
Two questions about colors: 1- Regardless of the color space used for the sources, and regardless of the operations we perform on the timeline, do we always see only an sRGB signal on the monitor? Even if the monitor is set to a different color space? I mentioned this in the manual where I had gathered various comments from GG and others, but I can no longer find the sources. Can we see from the code how the signal sent to the monitor works?
I think no? My understanding is that in modern terminology "gamma" is Electro-optical-transfer-function, and it describes (separately for each primary rgb color) how much light each sub-pixel must emit. What *really* happens depend on emitting material, and firmware inside monitor ... and well, gamma curve loaded into GPU's Digital Analog Converters in VGA case (I have VGA monitor). 8/10 bpc differs, but we do not do 10bpc rendering to monitor so this is not yet our space. Do you have any photo-target for calibration? I think (but I can be wrong) ideally colors as seen on your screen in some std. viewing environment should closely match what you see IRL with your eyes. Multiple cameras and monitors used in production and re-production lately complicate this greatly ...
2- In the rendering window, is it possible to use any options to set a color space (e.g., BT.709 or DCI-P3) of our choice? For example, can we use the zscale or libplacebo parameters?
I think zscale/libplacebo works if you set them as video_filter in .opts file, and zscale should work as draggable ffmpeg filter (libplacebo fails due to misconfigured complex input?) Ideally, like DaVinci Resolve there must be specialized hdmi/dp output module, just directly blasting pixels and some infoframes over hdmi/dp wire, so monitor can correct itself or just bypass signal without any additional processing. This only will work over separate, two-monitor setup I think (or maaay be via isolated display output in X) We sadly lack someone who both can code AND does have monitor hardware AND understand theory behind those transforms ... I only have qute shallow understanding on all 3 topics ....
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