How to make a video where every sound matches something on screen

Last updated 2026-09-04 · 7 min read

What is the short version?

A music bed hides everything underneath it. Take it away and the sound design has to carry the entire video on its own, which is why "no background music" is a far bigger instruction to give Vizard Agent than the three words make it sound.

1. Go to Vizard Agent with your scenes or your script.
2. Say no music, no song, no instrumental — none at all.
3. Say every sound has to match something visible on screen.

What do you need before you start?

The scenes, and a rule you are willing to enforce. The rule is the whole brief here: a video where the sound is only ever what you can see happening has a particular texture, and it only works if nothing sneaks in to smooth the gaps.

• The scenes. Filmed, or described shot by shot.
• The rule. No music of any kind.
• What counts as visible. Footsteps yes, mood no.
• Any room tone. Ambience is a judgement call; decide it.
• The platform. Some autoplay muted, which changes everything.

What do you type into Vizard Agent?

Say it three ways in the same sentence. "No music" gets interpreted generously by Vizard Agent and everyone else — a soft pad under a scene is not really music, is it — so the version of this instruction that actually holds is the one that closes every door at once.

Prompt

Variants worth knowing:

• "No backing of any kind." Closes the loophole.
• "Only what you can see." The rule, in five words.
• "Ambience is allowed." If you want room tone, say so.

What does Vizard Agent actually do?

Here is the order Vizard Agent worked in on a real animated short built to a strict sound-effects-only rule with no bed of any kind underneath it. Steps six and seven are the second pass, and they are what catches everything the first attempt at the sound design quietly left silent.

1. Checks the available tools and their costs.
2. Reads the template guidance for this kind of video.
3. Builds the first scenes and their sound in parallel.
4. Builds the remaining scenes and effects the same way.
5. Checks each scene's duration and format, then extracts frames.
6. Reviews the frames scene by scene at higher time resolution.
7. Builds the missing effects — a brake, a wheel click — found that way.
8. Reviews the detailed frames again for anything still uncovered.
9. Normalises every scene's format and resolution.
10. Builds the title graphics and applies them.
11. Joins the scenes into one timeline.
12. Aligns every sound effect and Foley layer to the picture.
13. Measures the integrated loudness of the result.
14. Combines the picture and sound into the final file.
15. Builds a visual QC grid and an audio waveform.
16. Checks both grids and the waveform before delivery.

Steps six and seven are the method. The first pass covers the obvious actions — a door, a footstep, an engine — and leaves the small ones silent, so the frames get reviewed again specifically looking for movements with no sound attached to them yet.

Step sixteen is the check that only matters when there is no music. In a normal mix, a missing effect is covered by the bed; here it is a hole, and a waveform shows a hole far faster than listening does.

What does the result look like?

A video where the sound is entirely diegetic — every single thing you hear is something you can watch happening on screen — and there are no dead patches left where an action went past without Vizard Agent giving it a sound.

It sounds different from a normal edit, deliberately. Without a bed the sound has more space around it, which is exactly why every gap has to be filled with something real rather than papered over.

When does this not work well?

Some videos genuinely need a music bed, and taking it away does not make them purer, only thinner. Anything carried by mood rather than by visible action ends up fighting this rule rather than using it, and Vizard Agent will say so rather than deliver something hollow.

• Emotional montages. The mood was the music.
• Long static shots. Nothing visible is making a sound.
• Talking-head footage. The voice is the sound design already.
• Very fast cutting. Effects pile up and turn to noise.
• Muted autoplay. Nobody hears any of this work.

How do you fix a result that came back wrong?

Name the shot and the specific action you mean. Vizard Agent keeps the per-scene effects, the alignment map and the loudness measurements from the build, so adding a missing sound or pulling out an intrusive one is a re-mix rather than a rebuild of the video.

• "Nothing happens when he lands." That action given its own effect.
• "There is a gap at 0:14." Found on the waveform and filled.
• "That effect is too loud." Re-levelled against its neighbours.
• "This one sounds like music." Replaced with a source you can see.

How does Vizard Agent compare to doing it yourself?

Sound design without a bed is real work — it is Foley, and it is done shot by shot. By hand the failure is not the big effects, which everybody remembers, but the small ones, which are what make the difference between designed and empty.

Common questions

Does "no music" include ambience? Your call. Tell Vizard Agent whether room tone counts as music.

Will it sneak a pad in? Not if you close the door explicitly. Vizard Agent honours the phrasing you give it.

Can it do this for filmed footage? Yes. Vizard Agent adds effects to what is visible in your own shots.

What about the voiceover? Voice sits outside the music rule. Tell Vizard Agent whether you want one.

How does it find missing sounds? Vizard Agent reviews the frames again looking for actions with no effect attached.

Can I hear the effects list? Yes. Vizard Agent gives you the per-scene breakdown before the mix.

Will it be too quiet? Vizard Agent measures the loudness and will tell you if it is thin.

Can I add music later? Yes. Ask Vizard Agent for the effects as a separate stem.

What about a whoosh on a transition? Nothing visible makes it. Tell Vizard Agent whether transition sounds are allowed.

Does it check the result? Yes — a waveform check specifically, because gaps are the failure mode.

Can it match a reference video's sound? Yes. Send one and Vizard Agent works to its texture.

Is this the same as ASMR? No. ASMR builds sound for its own sake; this ties it to visible action.

Does it cost more than a music bed? Somewhat — more individual effects. Ask Vizard Agent for an estimate.

Why does the rule need saying three ways? Because "no music" reads as guidance, and a soft pad under a scene rarely feels like a violation to anyone who did not write the rule.