Finds the moments
Whisper transcribes, Codex ranks every segment and scores the moments most likely to pop.
Scroll-stopping clips in seconds.
Clip4X finds your best moments, cuts them to 9:16 and 1:1, and adds hook titles and captions — export-ready, all on your own machine via the Codex CLI.
Fully local Codex CLI Open source
Everything a clip needs, done locally.
9:16 + 1:1
Reframes to vertical and square with a blurred background. Reels, Shorts, TikTok, feed.
Hook titles
Writes a punchy hook for each clip and burns it on top so the first second earns the watch.
Auto captions
Word-by-word captions transcribed locally — accurate even on messy audio.
Private by default
No upload, no cloud render, no subscription. Footage and transcripts never leave your disk.
Export ready
Drops finished MP4s straight to a folder — or uploads them to YouTube as Shorts.
Stop editing clips by hand.
The Mac app, notarized and ready to run.