Video Effects, Transitions and Sound Effects on Mac: A Practical Guide

The short answer

Creavit Studio has three libraries for finishing a video. The Effects library has 122 canvas effects that sit on an Effects track. The Transitions library has 50 transitions for the join between two adjacent clips, with a duration from 0.1 to 5 seconds (0.5 seconds by default). The Sound effects library has 121 sounds built into the app, so they work offline.

All three are searchable, let you save favorites, and place items on the timeline where you can move, trim or remove them. If you have an AI agent set up, Auto FX can pick moments and place sounds and motion cards for you. The best results usually come from using fewer of them, not more.

A rule of thumb before you start

Every effect, transition or sound should do one job: mark a change, draw attention to a result, or set the tone of a section. If you cannot name the job, leave it out.

For product demos and tutorials, viewers came to understand something. Effects that compete with the interface make that harder. For social videos, a little more energy helps, but the content still has to carry the clip. A useful default is one clear accent per idea, not one per second.

Part 1: Canvas effects

What is in the library

The 122 effects are grouped into four categories:

Older effects are still available too: Liquid glass, CRT, Pixelate and Dither.

How to add one

1. Open the Effects library. Use Search effects or the filters: Saved, Recent, For you and the four categories.
2. Click an effect to add it. It lands on the Effects track, usually three seconds long or shorter.
3. Move it to the moment it belongs to, and change its length on the track.
4. In Effect settings, adjust its controls. Some effects have none, and the panel says so. Reset effect returns to the defaults; Delete effect removes it.
5. Save the effects you use often. Saved effects appear under Saved, which helps you reuse the same small set across a series.

Where effects help

• In and out effects at the very start or end of a clip: a Blur fade in to open, a Fade out to close.
• Outlines such as White frame or Film matte for a consistent look across a series of social clips.
• A short Motion effect such as Push zoom on the moment a result appears.
• A Styles effect like Film grain at low strength under a whole intro, for texture.

Avoid flashing or strobing styles (Flicker, Flashing lights, Flash pulse) over interface text that people need to read, and use them sparingly in general: some viewers find rapid flashes uncomfortable.

Part 2: Transitions

What is in the library

The 50 transitions range from quiet to loud. Quiet ones include Dissolve, Fade, Blur and Wipe left/right. Directional ones include Slide up, Pan left and Quick pan. Louder ones include Datamosh, Swirl, Cube and Zoom shake. The classic presets are also available: Fade, 10 Light Leak variants, Flash, Dip to Black or White, Slide and Push directions, Zoom In/Out, Spin and Blur.

How to add one

1. Make sure two clips sit next to each other on the timeline. The library tells you "Add two adjacent clips to apply a transition" when there is no join to work with.
2. Open the Transitions library for the join between them. Use Search transitions or the Saved, Recent and All filters.
3. Click a transition to apply it. Choose None to remove it.
4. Set Duration. The default of 0.5 seconds suits most cuts in a demo; the available length also depends on the clips on each side.

Choosing a transition

• Same topic, next step: a hard cut or a short Dissolve. Viewers barely notice it, which is the point.
• New section: a Fade or a Dip to Black, slightly longer, to signal a change.
• Direction in the story: Slide or Pan in the direction the interface moves, for example sliding left when moving to the next screen of a flow.
• Social hooks: a louder transition such as Zoom shake or Quick pan can work once near the start. Repeating it on every cut makes it lose its effect.

Using the same one or two transitions across a video makes it feel planned. The video transitions page shows previews.

Part 3: Sound effects

What is in the library

The 121 sounds ship inside the app. Nothing is downloaded, and the library works offline. The categories are Interface (36), Transitions (25), Comedy (13), Cinematic (12), Reactions (11), Action (9), Game (9) and Nature (6). Thirty-one are real recordings; the rest were synthesized for the app. The Creavit Studio iPhone app shares the same library.

How to add one

1. Open the add menu in the editor and choose Sound effects.
2. Type in Search sound effects… or browse a category, and preview a sound.
3. Double-click a sound to add it at the playhead. Save the ones you use often as favorites.
4. On the timeline, move it to line up with the action and trim it like any other item.

Where sounds help

• Interface sounds such as a soft click or pop on the key action in a demo, not on every click.
• Transitions sounds such as a whoosh under a section change.
• Reactions or Comedy sounds in social clips, where the tone allows it.
• Under narration, keep sounds short and quiet so the voice stays clear.

Let Auto FX place sounds for you

When an AI agent is set up (Claude Code, Codex or Local AI), the Auto FX button appears in the editor toolbar. In its panel you can describe what to focus on, choose whether to add Sound effects and Motion graphics, and pick the agent and model. The agent looks for moments and places sounds and motion cards on the timeline.

A new run replaces the sounds Auto FX placed earlier, not the ones you added yourself. Treat the result as a first pass: listen through, remove what feels like too much, and nudge the timing of the rest. The AI agent guide explains the agent setup.

Limitations and honest notes

• Transitions need two adjacent clips. A single continuous recording has no join until you split it.
• Effects do not fix a weak recording. Blurry text, a cluttered desktop or unclear narration need a better take.
• Auto FX needs an AI agent. Without Claude Code, Codex or Local AI set up, the button does not appear; add sounds by hand instead.
• More is rarely better. Viewers notice when effects are added for their own sake.

Checklist before export

• Each effect, transition and sound has a clear job.
• Text stays readable during every effect.
• One or two transition styles are used consistently.
• Sounds sit under the voice, not over it.
• The video still works with the sound off.
• You watched it once at normal speed, with headphones.

Keep going

Browse the full lists on the video effects page, the video transitions page and the sound effects page. For titles and animated text, see the free motion graphics editor. To combine everything into a demo, read how to create product demo videos.

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