Commented EFEITOS? Here are the 45 effects, the full skill repository and the step by step. It is a free Claude Code skill, MIT licence. You hand it a vertical video of you talking to camera, pick the effect in one sentence, and Claude renders a new video next to the original, on your own computer, with your audio untouched.
The trick: the skill finds your face and cuts you out of the background. That is why the giant word, the cards and the reels go behind your head, not over your face.
Four truths first:
- The skill is free, Claude Code is not. It comes with a paid Claude plan (Pro and up, US$20 a month billed monthly per claude.com/pricing on 02/11/2026). There is no “free Claude” here.
- It adds no sound, music or captions. Do that in CapCut or the Instagram app.
- It works best on a vertical video of you talking to camera. It does not edit any video, and it does not replace CapCut or an editor.
- These are starter versions of the effects. Sound design and fine timing adjustments are up to you.
| What | Detail |
|---|---|
| Name | Claude Video Effects, a skill available in the effects repository (MIT licence) |
| Command | /efeitos (Paulo’s Portuguese adaptation, available in the repository linked below) |
| Effects | 45 numbered plus a few extra looks (README, checked 02/11/2026) |
| Where it runs | On your computer (Mac or Windows), inside Claude Code |
| Output | yourvideo_effects.mp4 next to the original, 1080p (4K if you ask, slower) |
| Face and cut-out | OpenCV YuNet (MIT) and MediaPipe Selfie Segmenter (Apache 2.0) |
What we tested (and what we didn’t)
Tested by us on 02/11/2026, on Paulo’s own footage: we ran the skill’s render script (fx.py) and the effects came out as the README describes. A 16 to 18 second clip with several effects took about 40 seconds on Paulo’s Mac. That is not instant, and another computer may be faster or slower. We also checked that the original version’s ZIP download, unzipped, puts the skill in the right place.
NOT TESTED BY US: typing /efeitos in the Claude Code chat, the install done by Claude itself, and Windows. Those steps come from the repository README.
About the reel: the Claude app screens in the video were recreated by us and sped up. It is not a screen recording, and real renders are not that fast. The “best effect” ranking (spotlight on top) is an illustration, not a vote or a measurement. And “Edited by Claude” means Claude runs the skill’s script; the look comes from the skill.
The simplest path
No coding: you paste one request into Claude Code, then type the effect you want. Allow about 15 minutes the first time.
Get what you need
- Claude Code on your computer, which comes with a paid Claude plan (Pro and up; see claude.com/pricing). It is not included in the free Claude plan.
- A vertical video of you talking to camera, ideally with you fully in frame. Start with a short clip.
- The skill, which is free. Find it in the repository, with the MIT licence.
Full skill, installation and source: github.com/pcauhi/efeitos.
Nothing else to install first: on first use, the skill asks Claude to install ffmpeg (the program that builds the video) and Python if they are missing.
Ask Claude Code to install it
Open Claude Code and paste this request. Step from the docs, not tested by us. Claude asks permission before touching files: read and approve.
Then close and reopen Claude Code. Prefer doing it by hand? See “Going further”.
Let Claude set itself up (first time only)
The first time you use it, Claude prepares the skill by itself: about 2 minutes, per the README. It needs ffmpeg and Python and installs both if missing (on a Mac through Homebrew; if Homebrew is missing, it asks you to install it first from brew.sh). Step from the docs, not tested by us.
Drag in the video and type the effect
Drag the video into the Claude Code chat and type the command, the effect and when it should appear. Examples:
/efeitos orbit from 3 to 6 seconds/efeitos spotlight when I say "kill the lights", with the word CLAUDE behind me/efeitos comment-box at the end, typing CLAUDEUse /efeitos followed by the effect name in English (full list below). The skill instructions are in Portuguese; you can ask Claude Code in English.
README tip: say the moment in plain words (“when I say ‘watch’”). Claude transcribes your audio and finds the exact second. You can stack effects in one request: “orbit from 10 to 13 seconds, then reject-stamp when I say ‘no’”.
Claude plans, checks and renders
Per the README: Claude writes a plan, makes a few still frames to check, fixes anything that covers your face, then renders yourvideo_effects.mp4 next to the original. Your audio stays as it was.
Watch it before you post. Review and approve the result. Don’t like it? Say what you see (“the word covers my face”, “it’s too fast”) and it renders again.
Sound and captions: elsewhere
The skill adds no sound, music or captions. Open the finished video in CapCut or post through the Instagram app and add the music there. (That is what Paulo did for the reel.)
The 45 effects
From the effects repository, checked on 02/11/2026. The 8 from our reel are marked.
Words and screens behind your head (15)
| # | Type | What happens |
|---|---|---|
| 6 | backdrop-word | A giant word drops in behind you |
| 7 | spotlight | Kill the lights, keep you lit (in the reel: “holofote”, using the extra look glitter-spotlight) |
| 24 | red-collage | Black and white you, a giant red word behind, three lines slam in (in the reel: “colagem”) |
| 26 | pastel-word | Lavender room, a giant word behind you, a profile card gets followed (in the reel: “lilás”) |
| 41 | led-sign | The lights drop and a glowing LED sign types itself out behind you |
| 39 | match-cut | News pages cut on one word, locked in place behind your head |
| 35 | headline-wall | Your headlines pile up behind your head, then a total pops in front |
| 8 | the-bill | Your instructions print out like a receipt |
| 17 | shortcut-rain | Keyboard keys rain down behind you |
| 1 | noise | Reels pile up behind your head |
| 4 | orbit | Your reels circle your head, behind you at the top (in the reel: “órbita”) |
| 2 | lineup | Numbered tiles fan out above your head |
| 30 | profile-wall | Your reels grid fills the wall while a counter ticks up |
| 38 | carousel-spin | Your reels spin around you in a 3D carousel |
| 27 | check-pills | Grid-paper room, your reels pinned behind you, blue pills get clicked |
Cards, lists and graphs (9)
| # | Type | What happens |
|---|---|---|
| 23 | glass-widgets | Frosted glass widgets and mini artifacts float around your head (in the reel: “vidro”) |
| 31 | tier-list | A tier list drops in and Claude flies into S tier (in the reel: “melhor efeito”) |
| 36 | checklist | A Claude task list under your chin, each step ticks green (in the reel: “checklist”) |
| 11 | todo | A checklist beside your head that ticks off as you talk |
| 40 | apple-toggles | iPhone switches flip on under your chin, one line at a time |
| 44 | messages | iMessage notifications pop in one after another with a soft glow |
| 37 | liquid-glass-graph | A liquid glass card with a graph that climbs and a number that counts up |
| 43 | over-the-shoulder-zoom | Pushes into one corner, a liquid glass graph pops beside your head, then the other corner with a second graph |
| 19 | countdown-flip | A 3, 2, 1 flip clock above your head |
Instagram-style (8)
| # | Type | What happens |
|---|---|---|
| 12 | comment-box | An Instagram comment types itself and posts (in the reel: “comentário”) |
| 13 | tap | A Follow button flips to Following |
| 16 | reel-frame | Your video shrinks into a reel card |
| 33 | phone-fan | Your reels fan out like a hand of phones |
| 45 | place-in-grid | You shrink into the centre of your 3x3 profile grid, your reels pop in around you with view counts |
| 25 | split-headline | A headline card slides down and pushes you to the bottom half |
| 29 | headline-box | A punch-in with a clean two-line headline |
| 21 | cover-star | You become a magazine cover |
Camera and colour (8)
| # | Type | What happens |
|---|---|---|
| 3 | locked-on | Brackets lock onto your face and the camera follows you |
| 5 | lean-in | A quick punch-in on one word |
| 42 | slow-push | A slow cinematic push-in while the room melts out of focus |
| 9 | moody | A moody colour grade |
| 10 | swipe | A before and after slider |
| 28 | timeline | A dark red film look with an editing timeline and a glowing playhead |
| 34 | dot-reveal | Your shot builds out of glowing dots, then snaps into focus |
| 20 | rabbit-hole | The room tunnels away behind you |
Marks and breaks (5)
| # | Type | What happens |
|---|---|---|
| 14 | pause-point | Freeze frame with a hand-drawn arrow |
| 22 | scribble | Marker doodles draw themselves around you |
| 18 | reject-stamp | A big red stamp slams down |
| 15 | uninstall | A glitchy uninstall bar breaks the frame |
| 32 | broll-split | B-roll on top with a price-tag sticker, you below |
Extra looks (same effect, different look; they don’t add to the 45):
glitter-spotlight: spotlight with golden rays and sparkles (the reel’s “holofote”).cover-star look=editorial: a classic magazine cover.liquid-glass-graph look=bento: a glass dashboard around you.
Aliases that also work: bill, to-do, follow, stamp, countdown, cover, rain, pause.
README tips: want your own reels in orbit, noise, phone-fan or profile-wall? Give Claude a folder of screenshots. Charts, counters and headlines should use your real numbers: tell Claude what they are.
Going further
Optional. Steps from the docs, not tested by us (README and SKILL.md, checked 02/11/2026).
Install from the repository
git clone https://github.com/pcauhi/efeitos ~/.claude/skills/efeitosThen restart Claude Code. On Windows (PowerShell), use $HOME\.claude\skills\efeitos as the destination.
What happens under the hood
- Setup: Claude runs
bash scripts/setup.sh, which creates a Python environment and installs numpy, opencv-python, pillow and mediapipe. It printsREADYwhen done. - Word timing: when you say “when I say X”,
words.pytranscribes the audio with Whisper (mlx-whisper on a Mac if installed, otherwise faster-whisper). - Plan: Claude writes
yourvideo_effects.jsonwith each effect, start and end. - Check:
fx.pymakes still frames in the middle of each effect; Claude looks and adjusts. - Render:
fx.pymakes the final 1080p mp4 with the original audio. Ask for 4K if you want (the README warns it is slower).
Useful options
- Short windows look best: 1.5 to 4 seconds per effect (SKILL.md).
- Zoom never goes past 2x, so the video stays sharp.
- Camera effects (
locked-on,lean-in,spotlight) go first when they overlap others. - Many effects take text and colour, for example
backdrop-wordwithtextandcolor,todowith items separated by|.
Quick questions
Do I need to code?
No. You paste one request and type the effect in a sentence. Claude runs the commands for you and asks permission first. It helps to know where your Downloads folder is and to read what Claude asks before approving.
Is it free?
The skill is free (MIT licence). Claude Code is not: it needs a paid Claude plan (Pro and up, US$20 a month billed monthly on 02/11/2026). ffmpeg and Python are free.
Does it work on my computer? On my phone?
It runs on your computer, inside Claude Code: the README covers Mac and Windows. Not on a phone. You can of course film on your phone and move the file to the computer.
Does it work with any video?
It works best on a vertical video of you talking to camera, with you in frame. The effects follow your face, so videos without a person, screen recordings or landscape footage are not the use case.
Is it safe?
- Everything runs on your computer: the video doesn’t go to any editing website. (Claude Code talks to Anthropic, so what you type in the chat goes through them.)
- First-time setup installs software (ffmpeg, Python and libraries). Claude asks permission first: read what it will run.
- The code is open (MIT) and available in the effects repository.
Honest limits
- Not instant: in our test, 16 to 18 seconds of video with several effects took about 40 seconds to render.
- No sound, music or captions.
- Best on vertical talking-head video; it does not edit any video.
- It does not replace CapCut or an editor: it is a shortcut for specific effects.
- Starter versions: review the result and adjust timing before posting.
- Claude Code is paid; the skill is the free part.
- The Portuguese version (
/efeitos): Paulo translated and adjusted it; he did not create the skill.
Repository and sources
- Face and cut-out: OpenCV YuNet (MIT) and MediaPipe Selfie Segmenter (Apache 2.0). Fonts: SIL OFL and Apache 2.0, licences in the
fonts/folder. - Claude Code on the Pro plan: claude.com/pricing, 02/11/2026.
- Portuguese version (
/efeitos): github.com/pcauhi/efeitos.
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