How to turn a screen recording into a polished app demo
Upload the recording and tell Vizard Agent to zoom on the taps, cut the waiting and add step labels. Vizard Agent computes the exact coordinates of each interactive element, measures the audio energy to find the dead time, and places the highlights on the buttons rather than near them.
What do you type into Vizard Agent?
Name all three treatments in one request. Vizard Agent handles zooming, cutting and labelling as one coordinated job, because the label has to appear where the zoom is going and after the cut lands. Asking for them separately breaks that. Add the app's name for the labels and say whether your narration stays.
Prompt
What does Vizard Agent actually do?
Much of the job is coordinate work. Rather than eyeballing roughly where a button sits, Vizard Agent crops into the interface and computes the actual bounding boxes, because a tap highlight two hundred pixels from its button reads as sloppy immediately. In the session behind this article it:
- Probed the recording, checked whether there was narration on it, and built a montage of frames from the whole thing.
- Detected the silence spans and measured the audio energy every half second to find the waiting.
- Cropped into each screen (the sign-in modal, the home screen, the buttons), computed the exact bounding boxes of the interactive elements and found the precise moment the modal popped up.
- Built the tap animations and step label cards, then composited a sample frame to check the design on frame.
- Rendered each segment with its zoom and overlays, previewed the subtitle style on a frame, and measured loudness across the speech and music-only sections before the final render.
- Cut a thirty-nine second recording to 19.97 seconds, keeping the phone's own 1072x2110 resolution.
When does this not work well?
Vizard Agent reads your interface as pixels rather than as a running application. Sensitive data stays visible unless you record with test accounts or ask for regions to be blurred. Dense screens leave nowhere for a step card to sit, a zoom into fast scrolling shows the blur at full size, and if your app really takes eight seconds, a demo that hides it sets an expectation.
Common questions
Does it keep my narration? Yes, if you ask. Vizard Agent checks for it before doing anything else.
Will the taps be visible? Yes. Vizard Agent generates tap animations placed on the computed button coordinates.
Can it hide account details? Ask and Vizard Agent will blur the regions you name.