Get this effect
Switch to Code in your Claude Desktop App
Install the skill (once)
Show the prompt
Install the Recharm video effects skill: download https://recharm-growth-staging.s3.us-east-2.amazonaws.com/website/downloads/recharm-video-effects.zip and unzip it into ~/.claude/skillsAsk for the effect
Add a color reveal to input.mp4 The second the color comes in: 0.8 Seconds the color takes to reach full strength: 0.25
Several videos, several effects, one ask
Put your clips in the folder, mention them with @, and ask for everything at once. Claude runs one tested script after another on each clip, then joins them.
Add a color reveal to @clip1.mp4, put a sale badge on @clip2.mp4, give @clip3.mp4 a VHS look, then join all three with crossfades.
Settings you can change
Ask Claude to change any of these, or edit them at the top of the command.
| Setting | Default | What it does |
|---|---|---|
AT | 0.8 | The second the color comes in. |
FADE | 0.25 | Seconds the color takes to reach full strength. 0 makes it a snap. |
Without the skill
Don’t want to install the skill? Paste this prompt into Claude Code and Claude writes the command itself.
Show the prompt
Make input.mp4 open in black and white and bring the color in at 0.8 seconds, reaching full color by 1.05 seconds. Keep the audio. Use ffmpeg and save it as output.mp4.Run it without Claude
This is the exact command we tested. Save it as color-reveal.sh and run:
sh color-reveal.sh input.mp4 output.mp4Show the command
#!/bin/sh
# Color reveal: the clip opens in black and white, then the color floods in at 0.8s.
# Usage: sh color-reveal.sh input.mp4 output.mp4
set -e
IN="$1"; OUT="$2"
AT=0.8 # second the color comes in
FADE=0.25 # seconds the color takes to reach full strength
ffmpeg -y -i "$IN" -vf "hue=s='if(lt(t,$AT),0,min(1,(t-$AT)/$FADE))'" \
-c:v libx264 -crf 18 -pix_fmt yuv420p -c:a copy "$OUT"
