user12268: Is this saying correct ?
The graphics card and most video codecs store colors in a linear scale.

user1871: If by linear scale, the (Cinelerra manual) "saying" means gamma = 1.0, then that's not my understanding of most video codecs.
GPUs, OTOH, probably do operate upon values decoded and stored as a linear representation of a higher precision than the source, which would be typically 8-bits per channel.

user8079: The correctness of this statement depends on the color model. The statement will typically be correct for color models such as RGB and CMY. In HSx (HSV, HSL) color models the model doesn't store explicit colors, and their transformation to explicit colors is non-linear.
EDIT:
My comment below on YUV is incorrect, YUV transforms linearly to RGB, thanks @Mulvya!

12268: <p>Is this saying correct ?</p>

<p><em>The graphics card and most video codecs store colors in a linear scale.</em></p>
 1871: <p>If by linear scale, the (Cinelerra manual) "saying" means gamma = 1.0, then that's not my understanding of most video codecs.</p>

<p>GPUs, OTOH, probably do operate upon values decoded and stored as a linear representation of a higher precision than the source, which would be typically 8-bits per channel.</p>
 8079: <p>The correctness of this statement depends on the color model. The statement will typically be correct for color models such as RGB and CMY. In HSx (HSV, HSL) color models the model doesn't store explicit colors, and their transformation to explicit colors is non-linear.</p>

<p>EDIT:</p>

<p>My comment below on YUV is incorrect, YUV transforms linearly to RGB, thanks @Mulvya!</p>
