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Long Video Maker

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Long Video Maker turns your own images, short video clips and script into a real video — up to 30 minutes long — right in your browser. Add slides (photos or video clips), write the text for each slide, choose how long each slide shows, add an AI voiceover that reads your script aloud with browser text-to-speech, and add your own background music. Preview it live, then export the full video as a WebM file. This page is honest about two things. First, true AI-generated footage only makes short clips (typically 5–10 seconds, sometimes up to ~30 seconds to 1 minute with paid tools) — no tool anywhere generates a full 15-minute AI video in one go, free or paid. This tool makes long videos the honest way: from your own images, clips and script. Second, export records in real time: a 15-minute video takes 15 minutes to export, and a 30-minute video takes 30 minutes. Keep the tab open while it records. Maximum total length: 30 minutes (the tool refuses anything longer). Recommended: up to 15 minutes is the smooth, safe range, especially on phones. For 15–30 minutes you will see a warning before export: use a desktop or laptop, expect a large file (about 60 MB per minute at Full HD 1080p; videos over 15 minutes export at a lower bitrate, roughly 100–300 MB for a full 30 minutes), and keep the tab open. Your media never uploads anywhere.

1. Add your slides

No slides yet. Add images or a video clip to begin. Maximum total length: 30 minutes.
Total length: 0:00 / 30:00 maximum.

Target length — pick your video duration

Quick presets from 5 seconds to 30 minutes, or drag the slider for a custom length. The total length updates live as you add slides.

Target: 1:00 — current total: 0:00.

2. Script, voiceover & music

Estimated file size will appear here once you add slides.

3. Preview & export

Export progress will appear here.
Add slides, then preview your video.
Honest limits: maximum 30 minutes (the tool refuses anything longer). Up to 15 minutes is the smooth, safe range, especially on phones. For 15–30 minutes: export is real time (30 minutes of video takes 30 minutes), the tab must stay open, use a desktop/laptop, and expect a large file (about 60 MB per minute at Full HD 1080p; over 15 minutes the bitrate drops to keep a 30-minute video around 100–300 MB). Browser text-to-speech reads your script aloud but cannot be recorded into the file — use microphone narration to include a voice in the export. Your media never uploads anywhere.

How to use Long Video Maker

  1. Add images (one or many) — each becomes a slide. Add your own short video clips too; each clip becomes a segment.
  2. For every slide, write its caption text and set how many seconds it shows. Watch the total length — the maximum is 30 minutes.
  3. Write your script and press “Hear Voiceover” to hear the AI voice read it while the preview plays. Add background music from your own audio file if you like.
  4. Press “Play Preview” to watch the whole video with titles and captions burned in.
  5. Press “Export Video” to record the full video as a WebM file. Check the estimated file size first. Export is real time — a 10-minute video takes 10 minutes.

Worked example

Example: a 3-minute story video. Add 6 photos, 30 seconds each, with one caption line per photo (“Morning in the village”, “The market wakes up”…). Write a 3-minute script, hear the voiceover, add soft background music, preview it, then export — a real 3-minute WebM video, made in your browser, ready to upload to YouTube.

Tips for better results

  • Up to 15 minutes is the smooth range — longer videos work best on a desktop or laptop.
  • Keep each slide 5–10 seconds: shorter slides feel like a real video, very long slides feel like a slideshow.
  • Write short captions — one line per slide reads best on screen.
  • Export once, at the end: every export records in real time, so plan your slides first.

Frequently asked questions about Long Video Maker

How long can a video be in the Long Video Maker?

Maximum 30 minutes — the tool refuses anything longer with a clear message. Recommended: up to 15 minutes is the smooth, safe range, especially on phones. For 15–30 minutes you will see a warning before export: export is real time (a 30-minute video takes 30 minutes), the tab must stay open, a desktop or laptop is recommended, and the file will be large (about 60 MB per minute at Full HD 1080p; videos over 15 minutes export at a lower bitrate, roughly 100–300 MB for a full 30 minutes). The estimated file size is shown before you start the export.

Can AI generate a 15-minute video for me?

No — and no tool anywhere can. True AI-generated footage (text-to-video tools like Sora, Runway, Kling or Veo) only makes short clips — typically 5–10 seconds per clip, sometimes up to about 30 seconds to 1 minute with paid tools — and needs a paid API key. A 15-minute video is made the honest way: from your own images, short clips and script, which is exactly what the Long Video Maker does. The AI Video Generator on this site builds the short-clip prompts for those AI tools.

Is the Long Video Maker free?

Yes, completely free — everything runs in your browser, no API key needed.

Will the AI voiceover be inside the exported video?

The voiceover reads your script aloud with browser text-to-speech so you can check the timing — but browsers cannot record that voice directly into the video file. To include a voice in the exported video, tick “microphone narration” and speak while it exports, or add your own recorded audio as background music. Background music IS included in the export.

How big is the exported file?

At Full HD 1080p (the default) about 60 MB per minute — 720p is about 30 MB per minute and 480p about 12 MB per minute. Videos over 15 minutes export at a lower bitrate to keep the file manageable — roughly 100–300 MB for a full 30-minute video. The exact estimate for your video is shown before you export.

Do I have to keep the tab open during export?

Yes. Export records in real time — a 10-minute video takes 10 minutes — and the tab must stay open and in the foreground. Closing the tab or switching away for a long time can stop the recording.

What can I add to a video?

Images (JPG, PNG, WebP and more), your own short video clips (MP4, WebM), a script for the voiceover, and background music from your own audio file (MP3, WAV). There is no site-imposed file size limit — your device memory is the only limit.

Is my media uploaded anywhere?

No. Your images, clips and music never leave your device. Building, preview and export all happen locally in your browser.

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