AI Video Tools Don't Know What Your App Looks Like So Demo the Real UI

A founder on r/SaaS said every AI video tool gave him "generic junk because they have no idea what my actual app looks like."

What works: 30 seconds of your real UI, one task, captions on screen, each shot held until you can read it aloud.

https://autowhisper.xyz/en/playbook/dev-demo-video?utm_source=x&utm_campaign=playbook

You ship on Friday. The launch post is written, and the only thing missing is a video. So you paste your app description into an AI video tool and get back someone smiling at a laptop in a sunny kitchen, next to a dashboard you never built.

The tool isn't broken. It has just never seen your product.

A founder building a healthtech app put it plainly on Reddit: "Every AI video tool gave me generic junk because they have no idea what my actual app looks like." ( https://www.reddit.com/r/SaaS/comments/1utkvp0/how_do_you_all_demo_your_saas_i_gave_up_on_making/ ) He ended up building an interactive demo with Claude Code on top of his real components.

Software sells on specific screens: the report filling in, the empty inbox, the button that replaces twenty minutes of copy-paste. If a model invents those screens, the video is about some other product. And the first thing a new signup finds out is that the video wasn't true.

Here's the structure I'd use for a 30-second demo.

Skip the logo animation. Open on the thing your app produces, or the mess before it: 14 tabs, a 2,000-row spreadsheet. One line of text on top that makes sense with the sound off.

The one people would pay for. No "it also does..." montage at the end. If you can't pick one, the problem is positioning, not editing.

A YC team posted their launch video on r/SaaS for feedback. Top comment: "Really good, but almost too fast to read." Another viewer said he remembered the product name and "email", "but nothing in between", because his eyes were hunting text in different colours, sizes and fonts. ( https://www.reddit.com/r/SaaS/comments/1tjpyjn/rate_the_launch_video/ )

You know your UI, so every cut feels slow to you. Simple check: read each caption aloud at a calm pace while it plays. If the shot changes before you finish, hold it longer.

X and LinkedIn autoplay muted. One font, one size, one colour, one position. One short line per caption. Never over the part of the UI you're showing.

One action, one URL, on screen for at least two seconds.

Six shots, about five seconds each. That's what "slow enough to follow" actually looks like.

Rule: every pixel of UI in the video is something a new user will actually see.

I run AutoWhisper, and this is the step it does. Give it your website URL and it captures your real pages and makes a product demo from them, with the text on your screens kept exactly as it is. If the important part is behind a login, upload screenshots instead. A full video is 52 credits and new accounts get 65 free.

The full guide, with a shot list you can copy: https://autowhisper.xyz/en/playbook/dev-demo-video

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