Mix and add audio

#What it is

The editor has audio tools for each clip and for each timeline row. You can change volume and fades, remove noise, lower music when someone speaks, add free music and sounds, make a voice from text, record your own voice, and line cuts up with the beat.

#Who can use it

Everyone. The app does not check your plan for any audio tool, so Free and Pro see the same controls. On a team, changing a project needs the Editor role or higher. A Viewer can look but not change.

#Cost

Mixed. Almost everything here is free, with no credits: volume, fades, noise removal, ducking, beat sync, recording, and the free music and sounds. Only the Voice-over tool in AI Gen uses credits. Its button shows an estimate before you press it, written as "about N credits". Enhance Text in the same tool also uses credits, and the app does not show a price for it. See price before you confirm and what is a credit.

#Where to find it

• Clip audio tools: click a clip on the timeline that has sound (an audio clip or a video with audio). In the inspector on the left, stay on the Edit view and scroll down to the audio sections.
• Mute and Hear only: in the row header at the left of each timeline row that holds audio.
• Free music and sounds: in the strip named Editor sections, choose Audio.
• Text to speech: in Editor sections, choose AI Gen, then Voice-over.

#Buttons and controls

The numbered rows are the Music & sounds panel in the screenshot.

Clip audio, in the inspector (Edit view). These show for a clip that has sound. They are in this order.

Timeline row header. For a row that holds audio.

Voice-over (AI Gen).

#How to change volume and fades

1. Click a clip on the timeline that has sound.
2. In the inspector, stay on Edit and find Clip Audio.
3. Drag Volume. The number is a percentage.
4. Drag Fade in and Fade out to set how long the sound eases in and out.

To silence a whole row, use Mute (row name) in its header. To hear one row alone, use Hear only (row name).

#How to clean up noise

1. Select the clip and open Background Noise Removal.
2. Click a card such as Speech Focus. The card is named Use Speech Focus noise reduction.
3. Check the line Current mode and the Applied tag.
4. To compare, use Hear Original and Hear Cleaned under A/B Preview.
5. To let the editor choose, click Analyze & Recommend. When Recommendation ready shows, click Apply Recommended Cleanup.

For a one click fix, use Clean audio in the quick bar at the top of the Edit view, or Quick Dialogue Cleanup in the AI tools. Both turn on the Speech Focus cleanup. You see "Noise cleanup applied".

#How to lower music under speech

1. Put the music and the voice on separate rows.
2. Select the music clip and open Audio Ducking.
3. Turn on Enable audio ducking. The state reads Ducking Enabled.
4. Under Trigger Source (Voice Track), click the voice row. Each row is named Use (row name) as ducking trigger.
5. Optional: click a preset under Ducking Presets.
6. Click Apply Ducking. It reads Analyzing... and then Ducking Applied.
7. To change it, adjust the sliders and click Update. To take it off, click Remove.

#How to add free music or a sound effect

1. In Editor sections, choose Audio.
2. Choose Music or Sound effects.
3. Click a chip, or type in the search box.
4. Click Listen to (name) to hear it.
5. Click Add. You see "Added to your video". The sound goes on a new row.

If the sound needs a credit, the message also shows "Credit:" and the artist. Add that name to your video description.

#How to make a voice from text

1. In Editor sections, choose AI Gen, then Voice-over.
2. Pick a Voice engine and a Voice.
3. Type your words in Text.
4. Optional: turn on Enhance for speech, click Enhance Text, read the preview, and edit it or click Discard.
5. Click Generate Speech. Check the estimate on the button first.
6. Press Play preview.
7. Click Save to Media, Add to Timeline or Download. A voice you do not keep is lost when you leave the panel. The app warns you with "Unsaved audio" and the next line tells you the three ways to keep it.

#How to record a voice-over

1. Move the playhead to where the voice should start.
2. Select a clip that has sound and open Voice Over in the Edit view.
3. Click Record Voice Over. Allow the microphone if your browser asks.
4. Speak. The timer counts up.
5. Click Stop & Add to Timeline. The recording is added on a new row named Voice Over. It stays in the project and exports with the rest of the sound.

#How to cut video to the beat

1. Put your video clips on the timeline and your music on its own row.
2. Select the music clip and open Beat Sync.
3. Click Detect Beats. You see BPM Detected and the number of Beats.
4. Under Select tracks to sync to beats:, click the video rows to include.
5. In Cut every, choose 1 beat, 2 beats, 4 beats or 8 beats.
6. Check the Preview. Click Apply Beat Cuts to N Clips.
7. To change the settings first, click Sync Settings.

#Options explained

Music chips (Style). For you, Upbeat, Calm, Cinematic, Lo-fi, Business, Acoustic, Electronic and Piano. For you picks a fresh starter word each time. Typing in the search box overrides the chips.

Sound effect chips (Kind). For you, Whoosh, Click, Pop, Hit, Applause, Ding, Nature and Typing.

Where the sounds come from. The panel says the sounds are openly licensed, either CC0 or CC BY, so you can use them in any video. For CC BY sounds you should credit the artist.

Noise cards. Balanced is general cleanup for moderate room noise. Speech Focus keeps speech clear while it reduces hiss and the room. White Noise is strong hiss removal for fans, air and camera noise. Music Bed pushes background music down. Heavy Noise is stronger cleanup for loud air, fans and street sound. Wind & Rumble targets low rumble, handling noise and wind. Hum & HVAC targets steady hum and air conditioning drone.

Noise sliders. Threshold goes down to -80 dB. Reduction is a percentage. Attack is in ms. Release goes up to 500 ms. A/B Preview is for listening only. The note says export still uses the cleaned sound.

Audio effects. Each effect has a switch named like Equalizer enabled, and a button named like Expand Equalizer.

Ducking presets. Subtle is a gentle lowering. Moderate is the middle. Aggressive lowers the music a lot. Podcast is tuned for a talking voice over music.

Ducking sliders. Detection Threshold is the voice level that triggers ducking, from -50 to -10 dB. Volume Reduction is how much the music is lowered, as a percentage. Click Timing Controls for three more: Attack (how fast the volume drops when the voice starts, up to 0.5 seconds), Release (how fast it returns, up to 1 second) and Hold Time (the shortest time to stay lowered between words, up to 0.5 seconds).

Beat Sync modes. Open Sync Settings to pick one.

For the three modes other than Cut Video to Beats, you can also set Beat Subdivision (1/1, 1/2 or 1/4), All Beats or Downbeats, and Offset, which moves the beats by up to 500 ms either way.

Voice engines. There are four: one marked "(expressive)" that is the default, one marked "(fast)", one called HD, and one HD marked "(multilingual)". The list of voices changes with the engine. The expressive and fast engines offer Ethan, Olivia, Harper, Grant, Iris and Jasper (English, US), and Kavya and Dhruv (Hindi). The HD engine offers Ava, Andrew, Emma and Brian. The multilingual engine offers Ava Omni and Andrew Omni.

#Limits

• Clip Volume goes up to 400 percent.
• Fade in and Fade out can each be up to half the clip length.
• Text to speech takes up to 5,000 characters.
• A single media file can be up to 500 MB when you bring it in. See import media.
• A request to the AI that has already used 100 credits stops. This applies to chat requests, see AI tools.

#When something goes wrong

#Questions

#Is there an audio mixer with faders and a pan control?

No. The editor has no mixer panel and no pan control. Use Volume, Fade in and Fade out on each clip, and Mute or Hear only on each row.

#Do I see beat lines on the timeline after Detect Beats?

No. Detect Beats shows the BPM and the number of beats in the Beat Sync section. The timeline does not draw beat lines today.

#Can I use the free music in an ad?

The panel says every sound is CC0 or CC BY, and both allow commercial use. For CC BY sounds you must name the artist, and the app shows the credit line when you add the sound.

#Does recording a voice-over cost credits?

No. Recording uses your microphone and your browser. Only Generate Speech and Enhance Text use credits.

#What happens if I leave the Voice-over panel with a voice I did not save?

The voice is lost. The panel warns you with "Unsaved audio", and if you click All tools the editor says "Your voice-over was not kept". Use Save to Media, Add to Timeline or Download first.

#Does text to speech work in other languages?

The multilingual engine is for that, and the first two engines include Hindi voices. Pick the engine first, because the Voice list depends on it.