Property Keyframes

Property Keyframes let you animate any numeric clip or layer property over time — opacity, volume, position, brightness, effect parameters — directly on the timeline, without needing a separate keyframe editor.

What Can Be Keyframed?

Almost any numeric property shown in the Inspector can be keyframed:

Category	Properties
Layer	Opacity, X/Y position, Width, Height
Audio	Volume (dB), Pan
Effects	Color Key tolerance, Luminance brightness/contrast/gamma, and advanced effect parameters
Data Tracks	Any data track value

Adding Keyframes

From the Inspector

1. Select a clip or layer in the Timeline.
2. In the Inspector, navigate to the property you want to keyframe.
3. Click the ◆ diamond icon next to the property name. This creates a keyframe at the current playhead position with the current value.
4. Move the playhead to a new time.
5. Change the property value — a new keyframe is created automatically.

From the Timeline (Keyframe Lane)

1. Right-click a clip in the Timeline and choose Show Keyframes → [Property Name].
2. A keyframe lane appears beneath the clip showing the property's value curve.
3. Click on the lane to add a keyframe at that time.
4. Drag a keyframe diamond to change its time or value.

Editing Keyframes

Action	How
Select	Click a keyframe diamond
Move (time)	Drag horizontally
Change value	Drag vertically, or edit numerically in the Inspector
Delete	Select and press Delete
Select all on lane	Ctrl+A while the lane is focused

Interpolation

Right-click any keyframe to set its interpolation type:

Type	Behaviour
Linear	Constant rate of change between keyframes
Ease In	Starts slowly, accelerates towards the next keyframe
Ease Out	Decelerates as it arrives at the keyframe
Ease In/Out	Smooth S-curve — slow start, fast middle, slow end
Step	Value jumps instantly at the keyframe (no interpolation)

Slider Sync

When a keyframe lane is visible, adjusting the property slider in the Inspector creates or updates the keyframe at the current playhead position in real time. This "slider sync" workflow is the fastest way to set up animation:

1. Show the keyframe lane for the property.
2. Position the playhead.
3. Drag the slider — a keyframe is created/updated automatically at the playhead.
4. Advance the playhead, drag the slider to the new value, repeat.

Example: Opacity Fade-In

1. Place a clip on the timeline.
2. Move the playhead to the clip start.
3. In the Inspector, set Opacity to 0 and click ◆ to add a keyframe.
4. Move the playhead forward 2 seconds.
5. Set Opacity to 100 and click ◆ again.

The clip now fades from fully transparent to fully opaque over 2 seconds. The keyframe curve is visible in the timeline lane as a rising line.