Your product already looks good on a phone. The missing piece is a short, vertical video you can drop into App Store previews, social posts, or a landing page — without opening a timeline editor.
Video maker (the Launch video maker) does one thing well: you pick screenshots, put them in order, write what you would say for each one, and tap Make video. It builds a 1080×1920 portrait clip with spoken narration, saves it to your photo library, and lets you share it.
No cuts. No keyframes. No “export settings.” Just the story of your app, out loud.
Get it on Google PlayWhat you get
A vertical MP4 built for phones. Each screenshot stays on screen for as long as its narration lasts, plus a short beat so the next slide never feels rushed.
That is the whole product: a slideshow that sounds like you explaining the app to a friend.
Before you start
Grab the screenshots you actually want people to see. Product shots, onboarding, a feature that matters, the payoff at the end — in the order you would talk through them.
A few practical notes
- You will be asked for photo access so the app can use your screenshots and save the finished video.
- You can add up to 30 pictures in one go (and add more later).
- Video encoding runs on iPhone and Android. The web app is for layout and drafting; use a device build when you are ready to render.
Upload your screenshots
Open the app and tap Upload screenshots.
Choose images from your library. Multi-select is on, and the order you pick them is the order they arrive. Videos are ignored — this is a stills-to-video tool.
Your strip of pictures appears under a short status line: how many you added, and a reminder that each slide holds for its audio plus a 500ms buffer.
Need another round of shots? Upload again. New pictures append to the list.
Arrange the story
The strip is the storyboard.
- Tap a picture to select it. The selected thumbnail gets a border, and the narration field below is for that slide.
- Hold, then drag to move a picture. Drop it where the beat belongs.
- Trash on a thumbnail removes that shot.
Reorder until the sequence matches how you would pitch the product: problem, product, feature, why it matters, close.
Any change to order or selection clears a previously generated video so you never share a stale cut.
Write the narration
With a screenshot selected, write the line you want spoken over it.
Keep it conversational. One idea per slide works better than a paragraph. You are not writing captions on screen — you are writing a voiceover the encoder will speak.
A simple arc:
- 1What this screen is
- 2Why someone should care
- 3What happens next
Leave a slide blank if you want a quiet hold. The picture still appears; there is just nothing to say.
Repeat for each thumbnail until the strip has a beginning, a middle, and an ending.
Make the video
Tap Make video.
The overlay walks through two phases:
- Preparing screenshots and narration… — images are sized for a 9:16 frame and scripts are lined up.
- Encoding video… — the native composer writes the MP4, with a percent as it finishes.
When it is done, Generated video appears with a portrait player. Watch it once. If a line is too long, a shot is in the wrong place, or you skipped a beat, tweak the strip or the script and make it again.
On device, the file is also saved to your gallery.
Share it
Tap Share video (on web, Download video).
Send it to Messages, save a copy, or hand it to whatever you use for App Store previews, TikTok, Reels, or a launch tweet. The file is video/mp4.
That is the loop: screenshots → order → words → video → share.
A few habits that make better launch videos
Fewer slides, clearer pitch.
Twelve tight screens beat thirty that wander.
Match talk time to the image.
If a screenshot is dense, say less — or split it into two shots.
Lead with the product, not the chrome.
Open on the moment someone would open the app, not on a settings screen.
End on the feeling you want remembered.
A result, a smile, a “here is what you get.” Then stop.
Treat the first export as a draft.
Watch it on a phone, then rewrite the two weakest lines.
If something gets in the way
Photo access denied.
Allow library access so you can pick screenshots and save the finished clip.
Could not create video.
Check that you have at least one screenshot, try again, and use an iOS or Android build — hardware encoding is not available in the browser.
Sharing unavailable.
The video still lives in the app cache; saving to the gallery on a successful encode is the backup.
The preview feels out of date.
Changing pictures, order, or which shot you are editing resets the generated file. Make the video once the story is locked.
Why this exists
Launch week is already loud. You should not need a video suite to explain a product that already lives in screenshots.
Upload what you built. Say it in your own words. Walk away with a vertical video you can actually ship.
Get it on Google Play