How to Use AI for Video Editing (Save Hours Every Week)

AI video editing tools can cut, caption, remove filler words, and enhance footage automatically. Here's what works in 2026.

· 5 min read · Tools: Descript, Runway, CapCut AI

TL;DR

Descript is the most revolutionary AI video editor — edit video by editing the transcript, like a Word doc. CapCut (free) handles auto-captions and basic AI edits for social media. Runway is the best for advanced AI effects.

Top Pick: Descript

Descript transcribes your video, then lets you edit by deleting text from the transcript. Delete the word “um” everywhere? One click. Cut a rambling section? Delete the sentences. The video updates automatically.

  • Best for: Podcasters, YouTubers, talking-head videos
  • Price: Free (1 hr/mo) / $12/mo Creator
  • Why we love it: Makes video editing as easy as editing a Google Doc

5 AI Video Editing Tasks

Task 1: Auto-Remove Filler Words

With Descript:

  1. Upload your video → Descript transcribes automatically
  2. Go to “Remove filler words”
  3. Select: “um,” “uh,” “like,” “you know”
  4. Click “Remove All” → Descript cuts those moments from video

This single feature saves 30+ minutes on a typical talking-head video.

Task 2: Auto-Captions

With CapCut (Free):

  1. Import video into CapCut
  2. Click “Text” → “Auto Captions”
  3. Select language → AI transcribes and places captions
  4. Edit any mistakes → Export

Accuracy: ~95% for clear speech in English.

Task 3: AI Background Removal (for Talking Head Videos)

With CapCut or Runway:

  1. Import clip where you’re talking to camera
  2. CapCut: Effects → Background Removal → Auto
  3. Replace with any background image or video

No green screen needed.

Task 4: AI B-Roll Generation

With Runway Gen-3:

  1. Select a section of your timeline
  2. Type a description of the visual you want
  3. Runway generates matching video footage
  4. Drag into your timeline as B-roll

Useful for filling gaps where you don’t have footage.

Task 5: Video Enhancement

With Topaz Video AI:

  • Upscale old 720p footage to 4K
  • Remove motion blur
  • Reduce video noise from low-light shots

Task 6: Auto-Edit for Social Media

With CapCut AI “Smart Cut”:

  1. Upload a long video (webinar, podcast, interview)
  2. CapCut identifies the best 60-second highlights
  3. Exports multiple short-form clips for TikTok/Reels/Shorts

Tool Comparison

ToolBest ForLearning CurvePrice
DescriptTranscript-based editingLowFree/$12mo
CapCut AISocial media clips, captionsVery LowFree
RunwayAI effects, generationMedium$15/mo
Adobe Premiere AIProfessional editingHigh$35/mo
Topaz Video AIUpscaling/enhancementLow$199 one-time

FAQ

Can AI edit a full YouTube video automatically? Partially. AI can handle captions, filler word removal, and highlight selection. Creative cuts, pacing, and storytelling still benefit from human judgment.

Is CapCut free for commercial use? CapCut is free for personal and commercial use. Some AI features require a Pro subscription ($8/mo). Check their licensing for content used in paid ads.

Will AI video editing replace video editors? For simple content (social clips, talking heads), AI handles 80% of the work. Complex narrative editing, color grading, and motion graphics remain human-dominated for now.