Contrast Video Filter

shotcut
September 2, 2019

Adjusts the difference between dark and light areas in the image.
Increasing contrast pushes dark values darker and bright values brighter, while decreasing contrast compresses the tonal range toward midtones.

Contrast does not change overall brightness; it redistributes how luminance values are separated.

What contrast means

In image terms:

Contrast defines how clearly forms, textures, and edges are perceived.

Note:

Brightness moves everything up or down; contrast spreads values apart or squeezes them together.

Parameters

Level (0.0 - 100.0%)

Controls the strength of contrast expansion or compression.

Important behavior

Keyframes

The Level parameter can be keyframed.

This allows:

Visual characteristics

Relation to black, white, light, and dark

Lower contrast compresses all values toward mid-gray, reducing distinction.

Note:

Contrast controls the distance between black and white, not their position.

Comparison with related controls

Contrast vs Brightness

Contrast vs Levels / Gamma

Recommended use cases

Limitations