There are four components to color space:
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The specific color space that applies to the video content. The color space specifies a range of pixel colors that can apply to the content.
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The color space metadata, which identifies the color space being used. If this metadata is present, the content is said to be marked for a color space.
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The brightness function that applies to the color space. The brightness function controls the brightness of each pixel. The brightness is also known as gamma tables, electro-optical transfer function (EOTF), and transfer function.
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The brightness metadata, which identifies the brightness function being used.
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The display metadata that applies to the color space. Not all standards have this metadata.
The video might use a specific color space and a specific brightness function. The video might also carry color space metadata that describes aspects of the color.
