How to Edit Video With AI: Captions, Cuts and Repurposing
Edit video with AI in five steps: transcribe, cut by transcript, add captions, and repurpose long recordings into short clips with Descript and OpusClip.
By Galactic News Editorial · Published 2026-11-10T07:24:18+00:00 · Updated 2026-11-10T07:24:18+00:00
How to Edit Video With AI: Captions, Cuts and Repurposing
Editing video with AI means letting software handle the repetitive work. It transcribes your audio, cuts silences, adds captions, and turns one long recording into short clips. You still make the creative calls. The tools just remove the tedious parts.
This guide shows how to edit video with AI in five steps. It covers captions, cuts, and repurposing. It compares Descript, CapCut, and OpusClip, the three tools most creators start with.
How to edit video with AI in five steps
- Record clean audio. AI editing starts with a good transcript. Record in a quiet room. Speak clearly. A clean recording gives accurate captions and clean cuts.
- Import and transcribe. Upload the footage to your editor. The tool transcribes the audio into text. Check the transcript for names and technical terms. Fix errors before you cut.
- Cut by transcript. Delete filler words and false starts from the text. The video follows the edit. Remove long silences in one pass. This step alone can cut editing time in half.
- Add captions. Turn on auto-captions. Pick a style that fits your channel. Check timing on the first ten seconds. Most viewers watch on mute, so captions carry the message.
- Export and repurpose. Export the main video first. Then feed the same recording to a clipping tool. It finds the best moments and reframes them for vertical video. Post the clips over the following days.
AI video editing tools compared
| Tool | Best for | What the AI does | Starting price |
|---|---|---|---|
| Descript | Talking-head video and podcasts | Edit by transcript, filler-word removal, Studio Sound | Free plan; Hobbyist $16 a month billed annually |
| CapCut | Fast social video edits | Auto-captions, templates, background removal | Free tier; Pro from $19.99 a month |
| OpusClip | Clips from long recordings | Finds best moments, reframes to vertical, adds captions | Free plan; Starter $15 a month |
| Submagic | Polished talking clips | Animated captions, b-roll, zooms, silence removal | Free plan; from $19 a month |
Descript is the pick for talking-head video. It transcribes your recording and hands you a text document. Delete a sentence from the text, and the matching video disappears. Its free plan covers 60 media minutes a month with watermarked 720p exports. Hobbyist costs $16 per person a month billed annually, or $24 billed monthly, with 10 media hours and watermark-free 1080p export. Creator costs $24 billed annually and adds 4K export.
CapCut is the fastest free starting point. Its auto-captions use animated word-by-word effects. Its template library covers most short-form needs. The free tier exports at 1080p. Pro costs $19.99 a month and adds premium assets and more AI credits. CapCut suits phone-first creators who edit footage they filmed.
OpusClip does one job well. Feed it a long video, and it returns short clips with captions, reframed for vertical screens. Each clip gets a Virality Score. One credit equals one minute of source video. The free plan gives 60 credits a month with a watermark. Starter costs $15 a month for 150 credits. Pro costs $29 a month, or $14.50 a month billed annually, for 300 credits.
Adding captions that people actually read
Captions are the highest-value AI feature. Most social viewers watch without sound. Good captions keep them watching. Pick a style with high contrast and large text. Keep each caption to a few words per line. Check the timing by watching the first clip on mute.
Fix the transcript before you style captions. Names, brands, and technical terms are the usual errors. A wrong caption in the first five seconds costs viewers. Spend two minutes on the opening lines.
Match the caption style to the platform. Short-form video suits bold, animated words. Long-form YouTube suits quiet, plain subtitles. One style does not fit both. Save a preset per platform so you do not rebuild it each time.
Cutting silences and filler words
Silence removal is the second biggest time saver. Descript removes filler words such as "um" and "uh" with one command. It also cuts gaps between sentences. Review the result once. The tool sometimes cuts a pause that adds emphasis.
For a tight edit, aim for a steady pace. Cut any pause longer than a second in a tutorial. Keep natural pauses in a story or interview. The goal is a video that moves, not one that rushes.
Repurposing one video into many clips
Repurposing starts after the main edit is done. Upload the finished long video to OpusClip. It scores moments and returns the strongest clips. Review the top five. Keep the ones with a clear hook in the first three seconds.
Post clips over days, not all at once. Each clip should stand alone. Add a caption that states the point. Link back to the full video in the comments, not in the clip itself. Track which clips get views, and make more of that type.
Common mistakes to avoid
The first mistake is trusting the transcript blindly. Auto-transcripts get names and numbers wrong. Check the opening minute before you publish.
The second mistake is over-cutting. Removing every pause makes a video feel rushed. Keep the breaths that give a sentence weight.
The third mistake is using one caption style everywhere. A style built for TikTok looks wrong on YouTube. Match the style to the platform and the audience.
Export settings that save time
Export settings decide how your video looks on each platform. Short-form video suits vertical 9:16 at 1080p. That is the default for TikTok, Reels, and Shorts. Long-form YouTube suits horizontal 16:9 at 1080p or 4K. Pick the format before you edit, not at export time.
Check the file size before uploading. A ten-minute 4K video is a large file. If the platform compresses it anyway, 1080p often looks the same and uploads faster. Reserve 4K for videos where detail matters, such as screen recordings with small text.
Save an export preset for each platform. Name it clearly, such as "TikTok vertical" or "YouTube 1080p". A preset stores the resolution, frame rate, and caption style. It turns a five-minute export setup into one click. Review the first export from each preset in full before you rely on it.
Bottom line
Edit video with AI by starting with clean audio, cutting by transcript, and adding captions early. Descript is best for talking-head edits. CapCut is best for fast free social edits. OpusClip is best for turning long recordings into short clips. Use all three together, and one recording can fill a week of posts.