How to make a factory tour video when the machines are too loud

Last updated 2026-09-01 · 8 min read

What is the short version?

A factory walk-through is filmed in the worst possible audio conditions: a person talking quietly beside a machine that is not. Trying to clean that audio is a losing fight, and the fix is editorial rather than technical.

1. Go to Vizard Agent and upload the whole recording.
2. Name the stages the video should cover, in order.
3. Say the rule: keep only clearly audible speech, caption the rest.

What do you need before you start?

The complete walk-through, however long it happens to be, and the real sequence of the process it covers. Vizard Agent finds the individual stages inside the footage on its own, but naming them in order is the thing that stops the finished video wandering about the way the tour itself did.

• The recording. All of it, unedited.
• The stages. Intake, sorting, processing, storage, finish.
• The audience. Ordinary viewers, or the trade.
• The rule. Clear speech only; the rest is captions.
• The length. Forty-five seconds for a feed.

What do you type into Vizard Agent?

State the audio rule explicitly, in the brief, before anything else. Vizard Agent will otherwise try to salvage the drowned lines with noise reduction, which gives you a thin and obviously processed voice — when the honest answer is simply to let those moments be pictures instead.

Prompt

Variants worth knowing:

• "Do not rescue bad audio." It stops the processed-voice sound.
• Name the stages in order. The process is the structure.
• Say who it is for. Jargon level follows from that.

What does Vizard Agent actually do?

Here is the order Vizard Agent worked in on a real underground winery tour. The first half is entirely about finding out what is on the tape — where each stage appears, and which lines can actually be heard.

1. Reads the client's project history and the previous video they made.
2. Reviews frames from that earlier video to match its style.
3. Transcribes the speech and builds a shot map of the whole recording.
4. Reads the shot map and checks the transcript against it.
5. Prepares a lightweight copy so the visual analysis can run on it.
6. Uploads that copy and reads further into the transcript.
7. Searches for the key production frames — the floor, the intake, the sorting.
8. Reads the search results and retries the one search that failed.
9. Searches for the remaining stages and extracts frames to look at.
10. Reviews the workshop, intake and sorting frames.
11. Reviews the tanks, fermentation and temperature frames.
12. Extracts and reviews the concrete vessels, the tasting and the cellar.
13. Narrows to the best shots and checks which speech is intelligible.
14. Checks the caption and music tools for the parts that will run silent.

Step thirteen is where the audio rule gets applied. Vizard Agent decides shot by shot whether the speech carries, and the ones that do not become picture with a caption — which is what a broadcast editor does in the same situation.

What does the result look like?

The recording this page is written from measured 1080x1920 at 30fps and ran 2364 seconds — thirty-nine minutes of walking around a working winery. Out of it came a vertical Reel of up to forty-five seconds covering the whole process.

Some of it is the guide speaking clearly. The rest is stainless steel, sorting tables and barrel cellars with captions over them, which is both more honest and better looking than a noise-reduced voice fighting a pump.

When does this not work well?

A process video can only ever show the stages that were actually filmed, and a walk-through tour tends to skip straight past whatever machine happened not to be running on the day somebody came round with a camera. These are the cases where it will come back short.

• Missing stages. No footage, no stage.
• Uniformly loud footage. Nothing usable as speech at all.
• Wandering tours. The order has to be rebuilt in the edit.
• Trade jargon. Say the audience, or it stays technical.
• Very short clips per stage. Some get two seconds.

How do you fix a result that came back wrong?

Name the stage that is wrong or missing. Vizard Agent keeps the full shot map, the transcript and its notes on which lines were intelligible, so an added stage or a re-ordered process is a rebuild from work that has already been done rather than another pass.

• "You missed the bottling." Located in the shot map and added.
• "That line is not clear enough." Moved to picture-with-caption.
• "Too technical." Captions rewritten for a general audience.

How does Vizard Agent compare to doing it yourself?

By hand the temptation is to run noise reduction across the entire tour and accept a thin, underwater-sounding voice from beginning to end. Vizard Agent judges intelligibility line by line instead, and turns the lines it loses into pictures with captions.

Common questions

Can it clean up the noisy audio? Somewhat, but it usually should not. Vizard Agent prefers captions to a processed voice.

How long can the source be? As long as the tour. Vizard Agent mapped a thirty-nine-minute walk-through here.

Will it find each stage? Yes, if it was filmed. Vizard Agent searches the shot map for each one you name.

What if the tour was out of order? It rebuilds it. Vizard Agent puts the stages into the real production sequence.

Do I need a script? No. Vizard Agent works from what the guide says and captions the rest.

Can it add narration instead? Yes, if you prefer. The guide's own voice usually feels more authentic.

How long should the finished video be? Forty-five seconds for a feed. Vizard Agent can build a longer version for a website.

Will the captions be accurate? They come from the transcript. Vizard Agent flags the lines it could not hear clearly.

Can it look premium? The material helps. Stainless steel and lighting shoot well; Vizard Agent picks those shots.

Does it work for other industries? Any process. Vizard Agent handles workshops, kitchens, print rooms and assembly lines the same way.

Why not just re-record the narration in a quiet room? You can, and it will sound better. What you lose is the sense that the person is standing in the place, which is usually the reason a tour video works at all.

Can it make one video per stage? Yes. Vizard Agent exports each stage separately from the same shot map.

Does it check the result? Yes. Vizard Agent reviews the selected shots and the caption placement before rendering.