Best AI for video: editing, captions, short clips, AI avatars and text-to-video
Video is the most-watched content on TikTok, YouTube, Instagram and WhatsApp status. AI now helps at every stage: writing the script, cutting long videos into short clips, adding captions, cleaning sound, and even generating video from text.
The best tools by job
| Job | Best tools | Notes |
|---|---|---|
| Edit short videos on your phone | CapCut | Auto-captions, templates, background removal, effects; very popular for TikTok and Reels |
| Edit by editing the words | Descript | Edit a video like a document: delete words in the transcript and the video is cut |
| Long video → many short clips | Opus Clip and similar | Finds highlights, reframes for vertical video and adds captions |
| Generate video from text or images | Google Veo, OpenAI Sora, Runway, Kling | Impressive short clips; good for b-roll, ads and creative ideas; quality and limits vary by plan |
| AI presenter / avatar videos | HeyGen, Synthesia | Training and explainer videos with an AI presenter; use only your own likeness or licensed avatars |
| Captions and subtitles | CapCut, YouTube auto-captions, Descript | Always proofread names and Kiswahili words |
| Scripts and ideas | Chat assistants | Hooks, scripts, titles and descriptions |
Best place to start: CapCut on your phone for editing and captions, plus a chat assistant for scripts.
A short-video workflow (TikTok, Reels, Shorts)
- Idea and hook: ask a chat assistant for 10 hooks for your topic.
- Script: 30–60 seconds; one idea per video.
- Record with your phone in good light, close to the speaker for clear sound.
- Edit in CapCut: cut pauses, add auto-captions, music from the app's licensed library.
- Check captions for spelling, especially names and local words.
- Title, description and hashtags: let AI suggest, then edit.
Give me 10 short, curiosity-driven hooks (under 10 words) for a TikTok about saving money on a KSh 15,000 salary in Nairobi.Write a 45-second video script teaching one Excel tip: XLOOKUP. Conversational, with on-screen text suggestions.Text-to-video: what it's good and bad at
| Good at | Not good at (yet) |
|---|---|
| Short scenic clips, product mood shots, abstract backgrounds | Long videos with a consistent story and characters |
| Ideas and storyboards | Exact brand details, readable text, logos |
| Quick b-roll when you can't film | Realistic people saying specific things (and it raises deepfake risks) |
Think about it: A church wants a weekly 60-second highlight from its 2-hour Sunday service for Facebook and TikTok. Which tools and steps would you use?Show answer
Upload the recording to a clip tool (such as Opus Clip) or Descript to find the strongest moments, or cut manually in CapCut. Reframe to vertical, add captions and proofread names and scripture references, add the church name and service times, and post consistently. Get consent before featuring identifiable members, especially children.
Summary
- CapCut for phone editing and captions; Descript for editing by transcript; Opus Clip for turning long videos into clips.
- Veo, Sora, Runway and Kling generate short clips; HeyGen and Synthesia make avatar videos.
- Use chat assistants for hooks and scripts; always proofread captions.
- No deepfakes; get consent and label AI video.
Check yourself
Which phone app is popular for TikTok editing with auto-captions? (one word)
Show answer
capcut
Which tool lets you edit video by editing the transcript? (one word)
Show answer
descript
Should you clone someone's voice or face without permission? (yes or no)
Show answer
no