How to explain an app feature as a step-by-step video

Last updated 2026-08-24 · 7 min read

What is the short version?

Explaining a feature nobody has used yet means showing the interface, and you rarely have a recording of the flow you are describing. Building the screens as vector graphics gives you a clean version of the interface without needing to capture one.

1. Go to Vizard Agent and describe the flow step by step.
2. Name the app and the feature.
3. Say the length and where the video will run.

What do you need before you start?

A written flow. Vizard Agent researches the app and builds the screens itself, so no recording is required, which is the point of this format when the feature is new or still being built. Spelling the product name out is worth doing, because transcription will guess otherwise.

• The flow. Each step, in order, in plain language.
• The app's name. Spelled out, so the captions get it right.
• The feature. What it does and why it matters.
• The length. Thirty seconds for a single flow.
• Your brand colours. For the cards and the interface screens.

What do you type into Vizard Agent?

Write the flow out as numbered steps rather than as a paragraph. Vizard Agent turns each step into its own scene, with its own interface screen and its own line of narration, which makes a numbered description both the script and the storyboard at the same time.

Prompt

Variants worth knowing:

• Vector interface screens. Cleaner than a screenshot and always on-brand.
• Sound effects on the steps. Small hits mark progress through a flow.
• A card per step. So the sequence is legible without sound.

What does Vizard Agent actually do?

Here is the order Vizard Agent worked in on a real feature explainer. The decision that matters comes at step nine: the generated interface screens did not read as convincing, so Vizard Agent built them as vectors instead.

1. Searches for the app to ground what the video says about it.
2. Checks the voiceover, music, stock and caption options and the effect recipes.
3. Generates the narration and searches for stock footage and background music.
4. Transcribes the narration for word-level timings and inspects the words file.
5. Generates the scene visuals and sound effects concurrently and reviews them as a montage.
6. Corrects the product's spelling in the transcript before any caption is generated from it.
7. Measures the loudness of the voice and music stems and locates the fonts.
8. Builds a test card renderer and generates preview frames for all four scenes, fixing the colour conversion when the first preview came out wrong.
9. Creates a custom vector icon module and re-renders the scenes with clean vector interface graphics, regenerates the captions at a refined size and position, then reviews a quality-control montage across the whole timeline.

Step 6 is small and worth copying. An unusual product name gets transcribed phonetically, and if that happens before the captions are built, your app's name is misspelled in every line of on-screen text.

What does the result look like?

From the run this page is written from, probed on the delivered file: 1080x1920, H.264, 30fps, 31.0 seconds, AAC audio. Vertical, thirty-one seconds, four scenes each showing a step of the flow as clean vector interface graphics, narrated, with sound effects on the transitions and burned-in captions.

Thirty seconds across four steps gives each one about seven seconds. That is enough to show a screen, say what happens and move on, which is the pace a feature explainer needs before it starts feeling like a manual.

When does this not work well?

This format shows a clean, idealised version of your interface, which is genuinely useful for explaining a flow and misleading if you push it too far. Vizard Agent builds exactly what you describe to it, and the gap between the drawing and the shipping app is yours to manage.

• Vector screens are not your app. They are a clean representation, not a capture.
• Do not show a flow that does not exist. Explaining an unbuilt feature as if it ships is a promise.
• Research is shallow for new products. Vizard Agent grounds what it can find publicly.
• Unusual names get transcribed wrong. Vizard Agent corrects them when you supply the spelling.
• Four steps is the comfortable limit. A longer flow needs a longer video or a series.

How do you fix a result that came back wrong?

Name the step that is wrong. Vizard Agent keeps the narration timings, the vector icon module it built, every rendered scene and each caption version, so changing a screen or rewording a step is a targeted re-render rather than a rebuild of the video.

• "That screen does not match our app." Rebuilt from the vector module to your layout.
• "Our name is spelled wrong." Corrected in the transcript and every caption follows.
• "Add a fifth step." Written, recorded and slotted in with its own screen.

How does Vizard Agent compare to doing it yourself?

By hand this means either recording a flow that does not exist yet, which you cannot, or mocking up four screens in a design tool and animating them one at a time. The name in the captions is the detail that slips through, because you know how it is spelled and the transcription does not.

Common questions

Do I need a screen recording? No. Vizard Agent builds every interface screen as vector graphics from your written description of the flow.

Can Vizard Agent show a feature that is not built yet? Technically yes, and be careful. Explaining an unshipped flow as if it exists is a promise to your users.

How many steps fit in one video? Four is comfortable in thirty seconds. More needs a longer video or a series.

Will Vizard Agent get our product name right? Yes, if you spell it out. It corrects the transcript before generating any captions.

Why build vectors instead of generating a screenshot? Because a generated interface looks plausible and wrong: the type is not quite a real typeface and the spacing drifts. Vector screens are crisp at any size, stay on-brand, and can be rebuilt to match your actual layout.

Does Vizard Agent add sound effects? Yes, small hits on the step transitions, measured against the narration.

Can Vizard Agent match our brand colours? Yes, across the cards, the icons and the captions.

Does Vizard Agent check the finished video? Yes. It reviews a quality-control montage across the whole timeline and re-rendered this one after replacing the generated screens.