Lesson 9 of 10

AI Video Editing Tutorial

AI Video Editing Tutorial — AIFree.vn AI illustration

AI video tools accelerate cuts, captions, B-roll, and filler removal — they do not replace story judgment. Learn a practical pipeline from raw recording to published short or YouTube episode.

What you will learn

  • Auto-cut silence and mistakes
  • Generate captions with review
  • Source B-roll responsibly
  • Export aspect ratios per platform

Prerequisites

  • 5–10 minutes of raw talking-head footage
  • Editor: CapCut, Descript, Premiere + AI plugins, or similar
  • Lesson 8 if you need AI voice-over

Step 1: Ingest and organize

  1. Copy footage to project folder: project/01_raw, 02_edit, 03_export
  2. Sync external audio if recorded separately
  3. Backup originals before destructive edits

Step 2: First assembly (AI-assisted)

  • Silence removal — aggressive for shorts, gentle for podcasts
  • Transcript-based edit — delete ums by editing text (Descript-style)
  • Keep hook in first 3 seconds for TikTok/Reels

Step 3: Captions

  • Auto-transcribe in Vietnamese or English as spoken
  • Fix proper nouns manually
  • Style: high contrast, mobile-safe font size
  • Burn-in vs sidecar SRT — pick per platform

Step 4: B-roll and visuals

Prompt B-roll with clear style (match Midjourney or DALL·E lessons).

License check: stock from licensed libraries; AI clips per tool ToS.

Step 5: Export presets

Platform Aspect Notes
YouTube long 16:9 1080p minimum common baseline
Shorts / Reels / TikTok 9:16 Safe zones for UI overlays
LinkedIn 1:1 or 4:5 Test on mobile

Step 6: Quality bar

  • Audio clicks removed; loudness normalized
  • Factual claims in script verified (AI does not verify truth)
  • Thumbnail from still frame or designed hero

Common mistakes

  • Publishing auto-captions with brand-name errors
  • Random B-roll with no narrative link
  • Overusing jump cuts that feel “machine chopped”

Practice exercise

From one raw clip, deliver:

  1. A 45-second vertical short with captions and hook
  2. A 3-minute YouTube cut with chapter markers in description (manual)

Time yourself: baseline edit vs AI-assisted edit. Target 30%+ time saved on captions and silence removal only.

FAQ

Full AI-generated video?
See Best AI Video Generators — different workflow from editing real footage.

Key takeaway

AI video editing wins on speed to good-enough draft; humans still own story arc and fact-checking.


AIFree.vn — practical AI & IT education. Updated June 2026.