YouTube video editing: your long-form video cut and paced by AI
On YouTube, a 10-minute video is won or lost in two places: the first 30 seconds, where viewers decide whether to stay, and the middle, where they drop off if they get bored. Editing a long video by hand can take a whole day. With ManyMotion, you upload your video (up to 30 minutes) and the AI handles the YouTube video editing: hesitations cut, a hook up front, on-screen chapter titles, zooms, B-roll, captions, subtle music and normalized audio. In 16:9, ready to upload.
Ready-to-use prompt ideas
Why ManyMotion
Up to 30 minutes
Tutorials, vlogs, breakdowns, interviews: upload a video up to 30 minutes and 5 GB, sent in chunks so nothing gets lost.
An intro that hooks
The AI can open on your strongest line instead of a long "hey everyone".
A visible structure
On-screen chapter titles and highlighted numbers: viewers always know where they are.
Regular pattern interrupts
Zooms, B-roll from your other videos, transitions at section changes.
Clean audio
Your voice normalized, original music that ducks under speech, subtle sound effects.
How it works
01
Upload your video
Up to 30 minutes and 5 GB, plus your B-roll clips if you have any.
02
The AI edits it in 16:9
Cuts, chapter titles, zooms, B-roll, captions, music.
03
Tweak and export
"Remove the part about pricing", "simpler titles": revise, then export.
What drives retention on a YouTube video
YouTube measures how long people watch your video. A video that holds its audience gets recommended more. Editing has a big impact here, at three moments:
- The first 30 seconds: show right away what the video promises. The final result of a tutorial, the conclusion of a breakdown, the highlight of a vlog.
- The middle: this is where the retention curve slowly slides. Regular pattern interrupts (chapter title, zoom, B-roll, question) keep it up.
- The ending: no long wrap-up. Finish on your last strong idea and a clear call to action.
We cover each technique in editing techniques that keep viewers watching to the end.
The typical structure of an edited YouTube video
| Moment | What goes there | What the AI does |
|---|---|---|
| 0-10 s | The promise or the highlight | Can move your best line to the opening, hook text |
| 10-30 s | The context, in two sentences | Cuts the slow parts, punch-in zoom |
| Body | The sections, one idea each | Chapter titles, B-roll, numbers on screen |
| Transitions | Topic changes | Transition (blur, flash, whip, zoom) at real changes |
| Ending | Last strong idea + call to action | Optional animated scene: subscribe, link, logo |
Preparing your files for a long edit
- One main take of 30 minutes max. Beyond that, split your footage into several videos.
- Separate B-roll clips: up to 5 videos per message in total. Name them clearly in your request ("the workshop clip", "the software screen").
- Clean audio: it's the basis of the transcript, and therefore of the cuts and captions.
- A structure in mind: announce your sections out loud while filming ("step one..."). It helps the AI place the titles.
- Your target length: "about 8 minutes" or "keep everything, just cut the silences".
Uploads are sent in chunks: on a shaky connection, a dropout doesn't make you start over.
What AI editing doesn't do for YouTube
Better to know before you start:
- No automatic splitting into Shorts: one request gives one edited video. To pull a Short from your long video, make a new request in 9:16 and specify the part to keep.
- No multicam editing: if you filmed with two synced cameras, the AI doesn't switch between them automatically. You can, however, use the second video as B-roll.
- No direct publishing: you export a Full HD MP4 (4K on the agency plan) and upload it yourself.
For your short-form content, see TikTok, Reels and Shorts video editing.
Frequently asked questions
How long a YouTube video can I get edited?
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You can upload a video up to 30 minutes and 5 GB. The final video is shorter once silences and hesitations are removed, or the length you ask for.
How much does editing a 10-minute YouTube video cost?
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A 12-minute raw video costs 24 credits to upload. If the final video is 10 minutes long, count 300 credits (1 credit per 2 seconds). The Studio plan at $79 per month includes 1,300 credits. See pricing.
Can I also get Shorts from my video?
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Yes, by making one request per Short, in 9:16, specifying the part to keep. There's no automatic splitting of a long video into several clips.
Are captions required on YouTube?
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No. On a long video, clean captions help people watching with the sound off. You can also ask for "no captions".
Guides to go further
Video Editing Techniques That Keep Viewers Watching
A hook in the first second, a 2-3 s rhythm, pattern interrupts, captions, sound, a clean ending: the editing techniques that make people watch to the end.
How to Add Subtitles to a Video (and Why You Should)
Why caption your videos, how to add automatic subtitles, which style to choose (pop, karaoke, clean) and the readability rules that matter.