Get this effect
Switch to Code in your Claude Desktop App
Install the skill (once)
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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 invert colors to input.mp4
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 invert colors to @clip1.mp4, put a sale badge on @clip2.mp4, give @clip3.mp4 a VHS look, then join all three with crossfades.
Without the skill
Don’t want to install the skill? Paste this prompt into Claude Code and Claude writes the command itself.
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Invert the colors of all of input.mp4, like a film negative: on every frame from start to end, replace each pixel's red, green and blue values with 255 minus that value (ffmpeg's negate filter does this), so white becomes black and purple becomes green. Don't change anything else. Keep the size, frame rate, length and audio the same. Use ffmpeg and save it as output.mp4.Run it without Claude
This is the exact command we tested. Save it as invert-colors.sh and run:
sh invert-colors.sh input.mp4 output.mp4Show the command
#!/bin/sh
# Invert colors: flip every pixel to its opposite (255 minus each channel) so the clip looks like a film negative.
# Usage: sh invert-colors.sh input.mp4 output.mp4
set -e
IN="$1"; OUT="$2"
ffmpeg -y -i "$IN" -vf "negate" \
-c:v libx264 -crf 18 -pix_fmt yuv420p -c:a copy "$OUT"
