## Tweak

`Tweak` (clip, float "hue", float "sat", float "bright", float "cont", bool "coring", bool "sse")

This function provides the means to adjust the hue, saturation, brightness, and contrast of a video clip.

Hue: (-180.0 to +180.0, default 0.0) is used to adjust the color hue of the image. Positive values shift the image towards red. Negative values shift it towards green.

Sat: (0.0 to 10.0, default 1.0) is used to adjust the color saturation of the image. Values above 1.0 increase the saturation. Values below 1.0 reduce the saturation. Use sat=0 to convert to grayscale.

Bright: (-255.0 to 255.0, default 0.0) is used to change the brightness of the image. Positive values increase the brightness. Negative values decrease the brightness.

Cont: (0.0 to 10.0, default 1.0) is used to change the contrast of the image. Values above 1.0 increase the contrast. Values below 1.0 decrease the contrast.

coring = true/false (optional; true by default, which reflects the behaviour in older versions) is added. When setting to true is means that the luma (Y) is clipped to [16,235], and when setting to false it means that the luma is left untouched. [Added in v2.53.]

sse = true/false (optional; false by default) re-enables the SSE code if required (perhaps an AMD might run it faster). [Added in v2.56.]

Changelog:

v2.56 | added sse=true/false to enable sse code

`$Date: 2005/10/03 16:49:04 $`