How to Make a Product Launch Video: A Second-by-Second Guide

A product launch video has one job: make someone who has never heard of your product understand what it does and want to try it, in less time than it takes to read your landing page. That constraint shapes every decision below. You are not making a film. You are making a 20 to 60 second argument, one sentence per scene.

This guide walks through the whole process, down to how many seconds each scene gets and how many words fit inside it. The timings come from finished launch videos, including the three templates that ship with Demogent, so you can see every number in a real context in our breakdown of three launch videos.

What a product launch video is, and what it is not

People use “launch video”, “demo video”, and “explainer” interchangeably, but they do different jobs, and mixing them up is the most common reason launch videos run long. A launch video announces. A demo proves. An explainer teaches. Decide which one you are making before you write a word.

Step 1: Write the one sentence

Before scenes, music, or colors, write a single sentence that says what the product is. Use this shape: [Product] is a [category] that [does what] for [whom or how]. If a viewer watches only one scene of your video, it should be this one.

• “Kestrel is an AI analyst that connects to your warehouse and answers questions in plain English.”
• “Forge is a deploy tool that reads your repository instead of a config file.”

Both lines come from Demogent's built-in templates, and both pass the same test: someone who has never heard of the product can repeat back what it is after one read. If your sentence needs a second sentence to make sense, your video will need a second minute. Rewrite it until it doesn't.

Step 2: Break the video into beats

A beat is one moment with one job. Most launch videos use the same five jobs in the same order: a hook that names the problem, a reveal of the product's name, one or more show beats where the product does something, a proof beat with a single number, and a close that says what to do next.

Here is how that looks in a finished 23-second video for Relay, a fictional AI support tool used in Demogent's SaaS Launch template:

Notice what is missing: no feature list, no team photo, no second product. Everything that is not the hook, the name, the product working, the proof, or the next step has been cut. That is what keeps it at 23 seconds.

Step 3: Budget your words by the second

On-screen text is the part of a launch video people actually read, often with the sound off, so it has to fit the time it is on screen. A reliable rule of thumb is about 15 characters per second. Demogent uses the same figure to size its text slots. That gives you a hard budget per beat:

“Your team answers 200 tickets a week?” is 37 characters, so it fits a 3-second hook with room to breathe. When a line overruns, don't lengthen the beat. Cut the line. Numbers beat adjectives, verbs beat nouns, and every “that allows you to” can go.

Step 4: Gather your assets before you open an editor

Editing goes fast when every file already exists and slow when you stop mid-scene to take a screenshot. Collect these first:

• Your logo as a transparent PNG, for the reveal and the closing card.
• Three to five screenshots of the exact screens your show beats need. Capture them at least as wide as the video you will export: 1920 pixels for 1080p, 3840 for 4K. Smaller files look soft once they fill the frame.
• Short screen recordings of single actions, if a still can't show the point. Five seconds of one click beats thirty seconds of wandering.
• One accent color from your brand, used for highlights and buttons only.
• Your call to action, written as the exact words on the button and, if you want one, the line under it.

Step 5: Build it on a timeline

In Demogent a project is four tracks: Background, Text, Components, and Audio. Clips on each track sit end to end, lengths snap to half seconds with a one-second minimum, and a timeline runs up to 60 seconds, which is more than a launch video needs. Build in this order:

1. 01.Start from a template or a blank project. The three templates (SaaS Launch, AI Product Launch, and Dev Tool Launch) are complete, pre-timed videos. Applying one and replacing its copy field by field is the fastest way to a first cut.
2. 02.Lay the backgrounds. Keep one background, or one color family, under all of your product beats so they read as one continuous space. The Relay template holds a single dark stage for the first 19.5 seconds and only switches on a subtle grid at the six-second mark instead of cutting to a new scene.
3. 03.Add text, beat by beat. Pick an animation per line: Typewriter, Blur Focus, Staggered Reveal, Split Text, Motion Text, and others. Use the same one or two throughout; a new effect every scene reads as noise.
4. 04.Add components for the show beats. Drop your screenshot or recording into a Browser Window or a phone or laptop frame, or use purpose-built pieces like Search Field, Query Submit, Mobile Notifications, Progress Ring, Logo Reveal, and CTA Outro.
5. 05.Leave room. When a component carries its own words, like a notification stack or a closing card, keep the text track empty for that beat. Two things talking at once means neither gets read.

Step 6: Get the motion right

Every clip can animate on and off: a direction (up, down, left, right, zoom in, or zoom out), a duration, an easing curve (smooth, snappy, or linear), and optional fade and blur. The defaults, 0.6 seconds in and 0.5 seconds out, are a good place to stay. A few rules keep the motion from getting in the way:

• Exits are shorter than entrances. The viewer's attention is already moving to the next thing.
• Keep one direction. If lines leave upward, have them all leave upward. Consistency is what makes a sequence feel designed.
• Save zooms for moments that matter. A zoom-out on the reveal or the final card lands. A zoom on every line doesn't.
• Never animate everything at once. Let the text land, then the component, or the other way round.

Step 7: Add music last

Put one music track under the entire video. On Demogent's audio track, clips play in sequence rather than cross-fading, so a second track would cut hard at its boundary, and a hard musical edit halfway through a 25-second video is worse than no change at all. Use a bundled track or upload your own music, sound effects, or a recorded voiceover.

Then turn the sound off and watch it again. Launch posts on X and LinkedIn usually start muted, and many people never unmute. If the video only makes sense with audio, the text is doing too little.

Step 8: Export

Demogent renders the video in your browser, so nothing is uploaded to a server to export. Heavier settings take longer: 4K at 60fps is roughly eight times the work of 1080p at 30fps. The Free plan exports at 720p and 30fps with a watermark for personal, non-commercial use. Pro is a one-time payment that unlocks 1080p and 4K, 60fps, watermark-free files, and commercial use.

Before you publish: a five-minute review

1. 01.Watch it once with the sound off. Does it still make sense?
2. 02.Watch only the first three seconds. Would a stranger keep watching?
3. 03.Pause on every beat. Can you read all of the text before it leaves?
4. 04.Find the one sentence from Step 1. Is it on screen, word for word?
5. 05.Read the closing card. Does it say exactly what to do next, and nothing else?

Where to use the finished video

A 16:9 launch video works as the first gallery item on Product Hunt, attached to your launch posts on X and LinkedIn, as the hero of your landing page, in the launch email, and in sales follow-ups. Length matters more than any platform limit here, so if you are unsure how long yours should run, read our guide to launch video length by channel.