01 / The short answer
The practical answer.
Render an After Effects composition as H.264 MP4 using supported Render Queue settings, or send it to Adobe Media Encoder. Confirm the output duration, audio, and playback rather than relying on the composition preview.
MP4 is a container, not an animation project. A broadly compatible delivery choice is H.264 video with AAC audio when sound is included. Keep frame size, frame rate, and duration consistent through rendering and encoding. Do not rename an HTML, ZIP, GIF, or WebM file to .mp4 and expect it to become a different format.
- The complete editable source, its assets and fonts, intended duration, output dimensions, frame rate, and audio if used.
02 / The walkthrough
The After Effects walkthrough.
Make one clear first version, review it, then refine the details.
Check the composition settings and range.
Confirm dimensions, frame rate, duration, and the range you intend to export. Inspect the beginning and end for empty frames. Make sure linked assets and fonts are available on the rendering machine.
Add the composition to the Render Queue.
Use File, Export, Add to Render Queue. Open the Output Module settings and select H.264 when available in your installed version. If your workflow needs additional encoding options, use Adobe Media Encoder instead.
Set the video, audio, and output file.
Review the format options for frame size, frame rate, and audio. Choose the intended destination filename and confirm sound is enabled if the film includes it. Standard H.264 delivery is a flattened image, not an alpha-channel master.
Render a short test before the full film.
Test a section containing the densest screenshot, a transition, and some audio. Watch the result at the intended display size. Correct the composition or settings before spending time on the whole export.
Render and inspect the complete MP4.
Check the saved file’s full length, first and last frame, sound, and text. Preserve the project and original media with the delivery version. If a client needs transparency or further compositing, discuss a separate master format.
03 / A useful prompt
Start with a usable brief.
Use this planning prompt in ChatGPT, Claude, or Gemini. Replace the bracketed details with verified product information.
Product: [name] Audience: [specific user] Current problem: [what is difficult today] Verified product facts: [supported features and evidence] Available visuals: [logo, screenshots, clips] Brand: [colors, font, tone] CTA and destination: [real action and URL] Create an export checklist for a 15-second product animation. Separate the editable source, rendered frames or recording, final H.264 MP4, audio track, and playback verification. Identify any missing asset, unsupported font, or timing assumption. Do not invent features, metrics, testimonials, prices, or availability. Flag missing facts and assets. Separate on-screen copy, narration, and production notes.
This prompt produces a brief or checklist. The walkthrough explains the separate production and delivery work.
04 / Worked examples
Three ways to apply it.
These are illustrative production briefs. They are not customer case studies or claims that the featured tool produced the LaunchVideoAI film above.
A 15-second logo and feature reveal
Use a 1920 × 1080, 30 fps target as a concrete test: 15 seconds corresponds to 450 output frames. Verify the reveal, the still hold, and the closing frame. Choose a simple domain-based filename such as acme-feature-reveal-v1.mp4. The test catches a common mistake: a preview that loops indefinitely even though the intended video should end.
A screenshot demo with a separate music track
Render or record the full demo, then confirm that the music starts at the intended point and ends cleanly. Listen to the exported file rather than trusting the editor preview. If the source recording has no sound, adding an audio codec option alone will not create a music track; the audio must actually be included in the export or encoding stage.
A revised version for a different destination
Keep version one intact and export a new file after changing the closing CTA. Recheck crop, font size, and final duration rather than assuming only the words changed. Use filenames such as acme-launch-v2-landscape.mp4. If you change the aspect ratio, recompose the scenes; stretching the old export usually damages text and screenshots.
05 / Checks and limits
Before you publish.
Linked media, fonts, and composition settings belong to the editable source. An MP4 is a delivery copy. Archive both, and make a short test render before a complex full export.
- Open the file in a separate player and in the browser where it will be used.
- Check the first and last frame, the full duration, and audio sync.
- Keep the editable project and original assets separately from the delivery MP4.
- A standard H.264 MP4 does not preserve transparency; choose a background or a different delivery format.
06 / A website-first option
Choose the production path.
Use After Effects when its workflow fits your project. For an original product film based on a public website, LaunchVideoAI offers another starting point.
01 / THE WORKFLOW
Work with After Effects
- Use the After Effects walkthrough for this specific task
- Supply accurate product facts and publishable assets
- Review the scene plan and produce or export the film
- Keep the editable source and verify the delivery file
02 / THE WORKFLOW
Start with LaunchVideoAI
- Enter a public website URL
- Choose the theme, length, and anything to highlight
- Generate original animation and music for the product
- Review versions, request an edit, and download the MP4
YOUR WEBSITE IS ALREADY THE BRIEF
Let’s put it in motion.
Original animation and music, made for your brand.
07 / Common questions
Questions before you start.
Why does an MP4 still fail to play in a browser?
The extension alone does not prove that the file contains a supported codec. Check the encoded video and audio, then check delivery headers, access permissions, and byte-range support. A correctly encoded local file can still fail if its hosted URL returns an error page instead of video.
Should I keep the project after exporting an MP4?
Linked media, fonts, and composition settings belong to the editable source. An MP4 is a delivery copy. Archive both, and make a short test render before a complex full export.
Was the Revolut example made with After Effects?
No. The featured Revolut film was made with LaunchVideoAI. It is product-video inspiration, not a result from this After Effects walkthrough. The worked examples are proposed briefs, not demonstrations of measured customer results.
Can I start from my public product website?
Yes. LaunchVideoAI starts from a public website URL. Choose your theme, video length, and focus, then review the generated film and request changes if needed. Check the current Essential and Explore packages before purchasing.
You can use LaunchVideoAI to make an awesome launch video in a few minutes.
Sources & further reading