Volume Control

Getting the audio mix right can make or break a video. StarZero Agents gives you straightforward volume controls on every clip — both video clips and separate audio clips — so you can balance everything to sound exactly the way you want.

Adjusting Volume

You can set the volume on any clip by asking in the chat:

"Set the volume of the background music to 30%"

"Turn up clip 2 to 150%"

"Lower the narration volume to 50%"

The volume range goes from 0% (completely silent) all the way up to 200% (double the original volume). The default is 100%, which is the original level.

Muting and Unmuting

Sometimes you want to silence a clip without removing it. You can mute and unmute any clip:

"Mute clip 3's audio"

"Unmute the background music"

Muting is handy when you're experimenting with your mix and want to hear what things sound like without a particular clip playing.

Video Clip Audio

Every video clip has its own audio — the sound that was recorded with the footage. You can adjust the volume or mute it entirely:

"Set clip 2's audio to 50%"

"Mute the audio on clips 2 and 4"

"Turn up clip 1's audio to 150%"

Setting the volume to 0% is equivalent to muting the clip. This is useful when you want to keep the visuals from a clip but replace its audio with music or narration instead.

Using the Visual Editor

If you prefer a hands-on approach, you can adjust volume directly in the visual editor. Both video clips and audio clips have a volume slider you can drag to set the level — open a clip's context menu (the "..." button) to access it. This gives you a quick, visual way to make adjustments without typing in the chat.

Volume Keyframes

Sometimes a flat volume level isn't enough — you might want music to fade in at the start, dip under narration, or fade out at the end. Volume keyframes let you change the volume at specific points within a clip — both audio clips and video clips.

"Add a fade-in to the background music over the first 3 seconds"

"Duck the music volume to 20% between 10 and 15 seconds, then bring it back to 100%"

"Fade out the audio clip at the end"

Each keyframe has a time (position within the clip) and a volume level. You can also control how the volume transitions between keyframes. The interpolation type on a keyframe controls the transition from that keyframe to the next one:

• Ease in/out (default) — smooth, gradual transition to the next keyframe
• Linear — steady, constant-rate change to the next keyframe
• Hold — volume stays at this level until the next keyframe, then jumps instantly

To remove keyframes and go back to a flat volume level, just ask:

"Remove the keyframes from the background music"

Editing Keyframes in the Visual Editor

When a clip has keyframes, an orange volume envelope is drawn over the clip so you can see the shape of the volume curve at a glance. For audio clips it's drawn over the waveform; for video clips it appears along the bottom of the clip. You can add, adjust, and remove keyframes directly from the editor:

• Add a keyframe — open the clip's context menu (the "..." button) and choose Add at playhead. The playhead must be positioned over the clip.
• Select a keyframe — click one of the orange dots on the envelope. The dot turns blue when selected.
• Drag to adjust volume — click and drag a selected keyframe dot up or down to change its volume level. A tooltip shows the current value as you drag.
• Change the transition type — with a keyframe selected, open the context menu and use the Linear / Ease / Hold toggle to pick how the volume moves from that keyframe to the next one.
• Adjust volume precisely — use the volume slider that appears in the context menu when a keyframe is selected.
• Remove a keyframe — select the keyframe, open the context menu, and choose Remove selected keyframe.

When keyframes are present, the clip's overall volume slider is replaced by per-keyframe controls.

Tips for Getting a Good Mix

• Background music usually works best at 20-30% volume so it doesn't compete with dialogue or narration.
• Narration and dialogue are typically your primary audio, so keep them at 80-100%.
• Use keyframes to duck music under dialogue — drop the music volume during speech and bring it back up in between.
• Fade in and out with keyframes for smoother transitions instead of abrupt starts and stops.
• Mute video clip audio when you want clean music or narration without background noise from the original footage.
• Preview your project after adjusting levels to make sure everything sounds balanced together.

What's Not Supported

StarZero Agents keeps audio controls simple and effective. There are a few things that aren't available:

• EQ or equalization — there's no way to adjust bass, treble, or frequency ranges
• Noise reduction — removing background noise or hiss isn't supported
• Pitch shifting — you can't change the pitch of audio clips

For most video content creation, the volume controls, keyframes, and mute toggles give you everything you need to create a clean, professional-sounding mix.