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Skills / Edit a short

Edit a short

Cut a watchable 30-60 second vertical video from their footage. Hook in the first two seconds, tight cuts, captions on. Use when they say "make this a short", "edit this into a reel", or have raw phone footage worth posting.

Use this skill. Nothing to install.

Open in ChatGPT Open in Claude prefilled and ready; just hit send
for Gemini, Copilot, or Cursor: paste it, then say "use the edit a short skill"

Don't have an agent?  ·  Raw file: skills/edit-a-short.md

Watch the first two minutes

This is how a session goes, starting from footage you think is boring. Click through it.

(pastes the skill) can you make a short out of this? i filmed my robot arm picking stuff up but it's 4 minutes of nothing happening
Four minutes of raw footage is plenty. Watch it with me once, all of it, and mark the single best two seconds. The moment someone would stop scrolling for.
probably when it grabs the can on the first try. that's at like 3:40
Then that is second zero of your short. The grab opens the video; context comes after, or never. Nobody scrolls past a robot mid-grab to find out what it is.
isn't the rest boring though? it's mostly me adjusting things
Most of it goes. A good short is mostly cuts: we keep the grab, two failed attempts because they make the win land, and one tight shot of your hands on the claw. Target is 30 to 45 seconds with a cut every few seconds.
ok but i don't have any editing software
CapCut on your phone is free and the footage is already there. We crop vertical to the arm, caption anything you say, and keep the action out of the bottom quarter where platform UI sits. Tonight you export a 1080x1920 MP4 that TikTok, Reels, and Shorts all take.

Scripted example of a real session.

But my footage is boring

Raw footage always looks boring, because it contains all the waiting. The skill works with your footage only: nothing pulled from elsewhere, no stock clips pretending to be yours, no "wait for it" caption over nothing. It finds the two seconds that actually work, opens with them, and cuts the rest hard. If the footage really is thin, the honest answer is a shorter video, and these projects exist to give you something worth filming.

Before/after short Your best trick, on film Cover a local game

What you end up with

A 30–60 second vertical MP4 on your phone, plus the decisions that made it. Here is the edit decision list from the robot-arm session above.

Example
EDIT DECISION LIST — ROBOT ARM SHORT
Source: one 4:12 horizontal phone clip  ·  Final: 0:41 vertical
CUTS, IN ORDER 1
0:00–0:02 — the grab, entering mid-motion (source 3:40)
Caption: "took all afternoon to get this"
0:02–0:12 — two failed attempts, straight cuts 2
The can tips over twice; this is why the grab lands
0:12–0:26 — hands adjusting the claw, punched in
0:26–0:38 — the grab again, full speed, held one beat
0:38–0:41 — end card: "robot arm, built from a kit, week 3"
DROPPED
About 3:30 of setup, tripod fumbling, and dead air between attempts
EXPORT 3
1080x1920 · 30 fps (matches source) · H.264 MP4 · under 60 s
  1. The hook is footage you already had. The best two seconds open the video and the setup comes later or never. That single reordering is most of the craft.
  2. Failures stay in. The skill never fakes drama, but real failed attempts are honest tension and they earn the ending.
  3. One export works everywhere. This exact spec uploads to TikTok, Reels, and Shorts. Under 60 seconds keeps Shorts eligibility.

Anatomy of the first two seconds

The skill builds the opening to this standard:

motion already happening at frame one · a caption that raises a true question · subject inside the safe zone · cut before the moment resolves

Questions people actually ask

Is this free?

The skill is free. The editors it uses are too: CapCut on phone or desktop, or DaVinci Resolve's free tier. The edit matters more than the editor.

Can it add stock clips or footage from other videos?

No. The skill cuts your footage only. Stock b-roll pretending to be yours is exactly the kind of faking it refuses. If your footage is thin, it makes a shorter video.

What about music?

Music comes from the platform's own licensed library, added at upload time, or from genuinely royalty-free sources. The skill will not rip a track, because that gets videos muted or taken down.

My video is horizontal. Is it ruined?

No. The skill crops to the action for a 9:16 frame, or stacks a punch-in when one crop cannot hold the subject. Most phone footage survives this better than people expect.

Do captions really matter on a 40-second video?

Yes. Most short-form video plays with sound off, so anything spoken gets captioned, auto-generated then fixed word by word. The captions-and-subtitles skill goes deeper if you want it.

Where to go from here

Posting the short? Finish the package:

Make a thumbnail Publish to YouTube Captions and subtitles

Want to make more than one? Build the habit properly:

Video script Start a YouTube channel Social post

Ideas to use it on

Curious? Read the full skill — the exact instructions your agent gets
---
name: edit-a-short
category: media
description: Cut a watchable 30-60 second vertical video from their footage. Hook in the first two seconds, tight cuts, captions on. Use when they say "make this a short", "edit this into a reel", or have raw phone footage worth posting.
---

# edit-a-short

Edit a short vertical video with someone, from footage
they already shot — a project demo, a skate clip, a cooking attempt,
whatever is on their phone. The bar: 30–60 seconds, watchable start
to finish, exported and ready to post before the sitting ends.

## Ground rules

- Their footage only. Nothing pulled from elsewhere, no stock
  b-roll pretending to be theirs. If the footage is thin, a shorter
  video is the answer.
- Free tools: CapCut or DaVinci Resolve (free tier) on desktop,
  CapCut on phone. Use whichever they have or can install fastest.
  The edit matters more than the editor.
- Music only from the platform's own licensed library (added at
  upload time) or genuinely royalty-free sources. Never rip a track.
- No fake engagement dressing — no invented captions like "wait for
  it" over nothing, no misleading thumbnails or titles later.

## The edit

1. Watch the raw footage with them once, all of it. Mark the single
   best two seconds — the moment someone would stop scrolling for.
   That moment opens the video. Context comes after, or never.
2. Cut ruthlessly. Every dead second between actions goes. A good
   short is mostly cuts: aim for a cut every 2–4 seconds unless a
   single take is genuinely carrying it.
3. Frame vertical 9:16. If the source is horizontal, crop to the
   action, or stack a punch-in. Keep the subject in the safe zone:
   captions and UI eat the bottom quarter and the right edge.
4. Captions on everything spoken. Auto-generate in the editor, then
   fix every word by hand — auto-captions mangle names and slang.
   Big, high-contrast, two lines max, centered above the bottom
   quarter. (The captions-and-subtitles skill goes deeper.)
5. Sound: level the voice so it is clearly above any music. If music
   is added in-editor, duck it under speech. Watch once with sound
   off — it should still make sense — and once at phone-speaker
   volume.

## Export

- Start with 1080x1920, source-matching frame rate, and H.264 MP4, then verify
  the current official format, duration, safe-area, and eligibility rules for
  the destination platform before export.
- Name the file something findable and keep the project file — they
  will want to re-cut.

## Done

- A vertical MP4 that meets the destination's current published requirements,
  watched end to end by both
  of you at phone size
- Hook lands inside two seconds; no dead air anywhere
- Captions accurate, readable, inside the safe zone
- They can say what changed between raw footage and final cut,
  because they chose the cuts with you

If they are ready to post it, the publish-to-youtube skill covers
the upload done properly; a thumbnail need points at make-a-thumbnail.