Opacity and Fades
Opacity controls how transparent or visible a cue is on Stage. WATCHOUT gives you two ways to change visibility over time: the Opacity effect, for full keyframe control, and the built-in fades — Fade-in, Fade-out, and Cross-fade — quick convenience transitions stored as cue properties. Knowing when to use each, and how they interact, keeps transitions clean.
Opacity Effect
The Opacity effect animates transparency as a percentage from 0% (fully transparent) to 100% (fully visible). The default value is 100%. Unlike fades, the Opacity effect gives complete control over the transparency curve — create any shape of fade, hold at partial transparency, create pulsing effects, or build complex multi-stage visibility changes.
To add an Opacity effect:
- Select one or more cues in the Timeline.
- Open the Effect menu and click Opacity, or press Alt+O.
- The Opacity effect appears in the tween area beneath the cue, within the General group.
Add tween points at different times with different opacity values to create the desired transparency animation. The Transition Type on each point controls the easing curve between values.
Common Opacity effect patterns:
- Custom fade-in — start at 0% and ramp to 100% over your chosen duration and easing curve.
- Partial transparency — hold at 50% or another intermediate value for a semi-transparent overlay effect.
- Pulsing — alternate between two opacity values (for example, 30% and 100%) with Sinusoidal easing for a breathing or pulsing look.
- Multi-stage visibility — fade in, hold, dim to 50%, hold again, then fade out — all within a single cue using multiple tween points.
Fades
Fades are convenience features for standard visibility transitions. They are not tweened — they are cue-level properties that generate a smooth opacity ramp at the start and/or end of a cue. Add a fade in one click; fades use configurable defaults so every fade in your show looks consistent.
WATCHOUT provides three fade actions in the Effect menu:
| Action | Shortcut | Effect |
|---|---|---|
| Fade-in | Shift+Alt+I | Adds a smooth opacity ramp from 0% to 100% at the start of the cue |
| Fade-out | Shift+Alt+O | Adds a smooth opacity ramp from 100% to 0% at the end of the cue |
| Cross-fade | Shift+Alt+X | Creates an overlap-based transition between two adjacent cues, fading one out as the other fades in |
These actions are toggles — clicking them adds the fade if not present, or removes it if already applied.
Fade Properties
When a fade is enabled on a cue, its properties appear in the cue Properties panel under Fade In/Out:
- Enable Fade-in — toggles the fade-in on or off.
- Duration — how long the fade lasts (for timed fades). This is the time from the start of the cue to the point where it reaches full visibility.
- Enable Fade-out — toggles the fade-out on or off.
- Duration — how long the fade-out lasts. This is the time before the end of the cue when the fade begins.
Each fade also has a transition type (easing curve) that controls the shape of the fade. The default is Linear (constant-speed fade), but you can change it to any of the 31 available easing curves for a more shaped transition.
For Cross-fades, the fade duration is defined by the overlap region between two cues rather than a fixed time value. The Properties panel shows the overlap reference as (Overlap with cue) alongside the linked cue.
Auto-Fade Defaults
WATCHOUT maintains default fade settings that are applied whenever you add a new fade. These defaults are configured in Preferences (File menu), under the Default section:
- Use Last Fade — when enabled, new fades use the duration and curve from the most recently configured fade.
- Fade in — the default fade-in duration and curve.
- Fade out — the default fade-out duration and curve.
These defaults apply only when creating new fades. Existing fades retain their individual settings.
Opacity Effect vs. Fades
| Opacity Effect | Fades | |
|---|---|---|
| Control | Full keyframe control with unlimited tween points | Start/end transitions with a single duration and curve |
| Complexity | Any transparency shape over time | Simple in/out ramps |
| Setup speed | Requires manual keyframe placement | One-click to add |
| Cross-fades | Must be coordinated manually between two cues | Built-in cross-fade mode handles overlap automatically |
| Consistency | Each effect is independent | Auto-fade defaults ensure uniform transitions |
| Best for | Complex transparency animations, partial transparency holds, pulsing effects | Standard scene transitions, quick fade-in/out |
Use fades for standard transitions where you want speed and consistency. Use the Opacity effect when you need precise control over the transparency curve, need to hold at partial transparency, or need more than a simple in/out ramp.
Interaction Between Opacity Effect and Fades
A cue can have both an Opacity effect and fades applied simultaneously. When both are present, their opacity values multiply. For example, if the fade is at 50% and the effect is at 80%, the resulting opacity is 40% (0.5 x 0.8).
In most workflows, you use one or the other — not both. If you need custom fade shapes, use the Opacity effect directly and skip the fades. If you need quick standard transitions, use fades and skip the Opacity effect.
Applying Fades to Compositions
When applying fades to a Composition, the fade affects both the visual opacity and the audio volume of the composition's contents at once. This fades an entire multi-cue scene in or out without adding individual fades to every cue inside the composition.
Common Use Cases
- Scene transitions — add Fade-in to incoming content and Fade-out to outgoing content for clean, professional transitions between scenes.
- Cross-dissolves — overlap two cues on the timeline and use Cross-fade for a smooth dissolve from one image to the next.
- Overlay graphics — use an Opacity effect to hold a title or lower third at partial transparency over background content.
- Attention pulses — animate opacity between 0% and 100% several times in quick succession for a flashing or pulsing alert effect.
- Layered transparency — hold multiple cues at different partial opacity values to create layered, semi-transparent compositions.
Practical Tips
- For most show transitions, fades are faster and more consistent than manually building Opacity effects. Reserve the effect for situations that genuinely need custom curves.
- When using Cross-fade, ensure the two cues overlap on the timeline by the desired transition duration. The cross-fade automatically uses the overlap region as the fade duration.
- If a fade appears to have no effect, check that the cue is not also being controlled by an Opacity effect that overrides the intended behavior. Remove one or the other to avoid unexpected results.
- Test fades on the actual display output. Very short fades (under 0.5 seconds) can appear as pops rather than smooth transitions on some display hardware due to frame timing.