You've shot your footage, you've got your script, and now you have to edit. That's usually where projects die: cutting the silences, syncing the subtitles, finding music, exporting in the right format for TikTok and then again for YouTube. AI now handles a good chunk of that work — but not all of it. It's very effective on repetitive tasks (transcription, subtitles, dead-air removal, auto-reframing, audio cleanup) and noticeably weaker on pacing, intent, and shot selection — which is exactly what makes a video enjoyable to watch.
This article walks you through three concrete methods for editing a video with AI, what each one costs, how long it really takes, and a six-step workflow you can reuse on every video you make. No technical skills required: if you know how to send a file from your phone, you can start today.
What AI can do in a video edit (and what it gets wrong)
AI handles the mechanical parts of editing extremely well: transcription, subtitles, silence removal, reframing, audio cleanup. It handles pacing, intent, and shot selection badly — those stay your job.
An edit isn't one action, it's a series of micro-tasks. Here's which ones are reliable today and which still need your eye.
| Task | What AI does | Real-world reliability |
|---|---|---|
| Transcription and subtitles | Generates text synced to the voice | Good: expect a few fixes on proper nouns and technical terms |
| Silence removal | Cuts dead air, hesitations, and every "um" | Good, but review it: it sometimes cuts breaths you needed |
| Reframing 16:9 to 9:16 | Tracks the face or the main subject | Good with one person on screen, dicey with several |
| Audio cleanup | Removes background noise, echo, hiss | Excellent — this is the most immediate win |
| Shot generation (B-roll) | Creates illustrative images or sequences | Variable: you have to sift through it and often regenerate |
| Shot selection and pacing | Proposes a complete automatic edit | Weak: the result is flat, the calls are yours to make |
The practical takeaway is simple. On a two-minute short-form video, AI absorbs the grunt work (transcribing, subtitling, cleaning, resizing) in a few minutes, whereas those steps easily eat an hour by hand. But if you also hand over the decision of what stays on screen, you get a video that's technically fine and boring to watch. The right instinct: AI for execution, you for decisions.
A quick note on vocabulary, because it causes a lot of confusion. "AI video editing" actually covers two different things: editing assistance (you have footage and AI helps you assemble it) and video generation (you shot nothing and AI builds the images from a text prompt). These are two distinct crafts, and often two distinct tools. If the second one is what you're after, start instead by understanding how to generate a video from text.
Method 1: edit inside an environment where the AI tools are already bundled together
The most effective method for a beginner is to work in a space where the AI tools are already connected and paid for: you generate the shots, the voiceover, and the music in one place, then you edit — without stacking up five subscriptions.
The real obstacle when you start isn't technical difficulty, it's accumulation. An image generator, a video generator, a voiceover tool, royalty-free music, a subtitle tool: each one charges €15 to €30 a month, and you're at €100 a month before publishing anything at all. That's without counting the time spent creating accounts, learning interfaces, and shuttling files from one to the next.
That's the idea behind Skilzy's AI Lab: the tools are built into the platform with credits included. You follow a program that teaches you the method, and you apply it immediately in the same tab, on your own project. Concretely, for a short video aimed at Instagram or TikTok, you go straight through: script, shot generation, voiceover, music, then assembly and subtitles.
The platform has more than fifteen programs (image creation, UGC videos, faceless YouTube channels, talking avatars, voiceover, music, automation with n8n, prompt writing, AI-assisted coding). For editing social videos, the most direct entry point is the UGC video creation with AI program, which starts from the script and goes all the way to a published video, vertical format included.
Two concrete things before you jump in:
- Try it without a credit card. The discovery demo gives you 7 days with 1 image, 1 video, 1 music track, and 10 messages. You do have to create an account, but no credit card is required. That's enough to check that the output quality works for you before paying anything.
- Pricing and funding. Subscriptions start at €29.90 a month, no commitment. Two certifications are state-recognized and therefore eligible for funding: RS7439 (content marketing with AI) and RS6792 (AI and sales). You can verify that they exist and check what they cover directly on the official France Compétences registry. There's also a B2B track for training organizations that want to integrate these courses.
This method has a limit, and it's worth saying out loud: if you're already an editor working on long projects with dozens of tracks, you'll stay on professional software. This is built for social video — short, produced at volume.
Method 2: consumer AI video editors
If you already have your footage and you only want to cut it together, a standard AI video editor does the job — often for free for simple use.
These tools assume the raw material already exists. They automate assembly, not creation.
- CapCut: the most widely used for vertical formats. Automatic subtitles, background removal, smart reframing, a template library. The free version covers most needs; the advanced AI features and watermark-free export are paid.
- Descript: editing by text. The tool transcribes your video, you delete a word in the transcript and the matching shot disappears from the timeline. Devastatingly effective for interviews, filmed podcasts, and tutorials.
- Adobe Premiere Pro: the professional standard, which now offers the same text-based editing principle. It's powerful but dense, and the subscription sits in a different price bracket. The official text-based editing documentation explains how it works in detail.
- Opus Clip and similar tools: you drop in a long video and the tool automatically pulls short clips out of it, with subtitles and vertical reframing. Useful for recycling a livestream or a podcast. The waste rate stays high: out of ten suggested clips, two or three are genuinely publishable.
A quick way to choose: short formats and speed, go with CapCut; lots of talking to cut, go with a text-based editor; recycling long-form content, go with a clip extraction tool. And if your end goal is to publish regularly, the next step is to automate publishing to social media — otherwise the time you saved editing gets swallowed by uploading.
Method 3: the automatic editor already sitting in your phone
Your phone already contains a free automatic editor, and for a simple video it's more than enough.
This is the option most articles forget to mention, even though it costs nothing and is already installed.
On iPhone, the Photos app builds "Memories" automatically from your videos and images, with music and transitions. iMovie, free on the App Store, adds "Magic Movie" mode: you select clips and the app generates a paced edit that you can then adjust shot by shot. On Android, Google Photos creates automatic videos based on a theme or a person, and Samsung phones include an editor with automatic suggestions in the Gallery.
What it does well: assembling clips in chronological order, cutting on the beat, adding a title, exporting straight to the right format. All in three minutes, with no account to create and no credits to burn.
What it doesn't do: generate images that don't exist, produce a convincing voiceover, write custom-styled subtitles, or sustain a publishing rhythm of several videos a week. The moment you move from memory videos to content videos, you hit the ceiling fast. But for a first video, test this option before paying for a subscription: at minimum you'll learn what else you actually need.
The 6-step workflow that works every time
A successful AI edit always follows the same order: write first, edit second, dress it up last. Reversing those steps is the number one cause of failed videos.
- Write the script before you shoot or generate anything. Three sentences are enough for a 30-second video: a hook, one useful point, one action to take. That text determines the final runtime, not the edit.
- Gather the raw material. Either you shoot it, or you generate the shots with AI, or you mix the two. Always plan for 30% more footage than you think you'll use.
- Get it transcribed. The transcript is the backbone of modern editing: it feeds the subtitles, the cuts, and the caption on your post.
- Cut. Remove the silences, the hesitations, and above all the first five seconds if they don't hook. A short video is won or lost in the first three seconds.
- Add the sound. Audio cleanup first, voiceover next if you need one, music last and at low volume. If you're producing in a language other than English, tone and accent become decisive — we compared the results in our test of French AI voiceovers.
- Dress it up and export. Readable subtitles (large, centered, two or three words at a time), one format per platform, and 1080p is plenty in almost every case.
Budget 20 to 30 minutes for a short video once the workflow is dialed in, versus two hours with classic manual editing. The real win isn't the speed on one video, it's being able to publish ten a week without spending every evening on it. To apply this workflow to vertical format, our guide on creating Reels and TikToks with AI breaks down the settings platform by platform.
The mistakes that ruin an AI edit
Most disappointing AI videos fail for reasons of method, not technology.
- Trusting automatic subtitles without proofreading them. Proper nouns, brand names, and linked words get transcribed badly. Thirty seconds of proofreading saves you from a nonsense line displayed in huge type on screen.
- Letting AI set the pacing. Automatic edits produce shots of uniform length, which feels mechanical. Vary it by hand: one long shot, two short ones.
- Piling on effects because they're available. Zooms, transitions, filters: every one added "because the tool offers it" pulls the viewer further from the message.
- Generating the images before writing the script. You end up with pretty shots that say nothing, and then spend an hour writing a script that fits the visuals.
- Editing once for every platform. A 16:9 format hastily cropped for TikTok chops off faces. Take the time to check the vertical framing.
- Neglecting the sound. Mediocre visuals with clean audio pass. Beautiful visuals with dirty audio don't. It's the most consistent rule in video.
What to take away
AI doesn't edit your video for you: it removes the mechanical tasks so you can spend your time on the decisions that matter.
Start with the simplest thing: test your phone's automatic editor on a video you already have, to identify what's missing. If what's missing is raw material (shots, a voice, music), move to an environment that brings those tools together with credits included and a method to go with them. If what's missing is just assembly speed, a consumer AI editor will do fine. In all three cases, publish your first video before hunting for the perfect tool: publishing is what teaches you, not comparing subscriptions.
