Katto

Katto converts one long video into a set of short-form clips in about ~5 minutes. It transcribes your content, finds moments worth sharing, and ranks clips with a virality score based on hook, flow, value, and trend—so you can export the winners.

Miru AI reframes clips for vertical formats using face tracking and intelligent layout switches. Captions are generated word-by-word in 99 languages (with AI proper-noun correction), plus optional AI hook text and vocal cleanup for a more polished result.

Export is built for speed: review and edit, then export in 1080p or post directly with one click to seven platforms—YouTube, TikTok, LinkedIn, Instagram, Bluesky, Mastodon, and Threads. Supported inputs include YouTube links or MP4/MOV/WebM/MKV up to 90 minutes (and 5 GB uploads on Creator).

What does Katto generate from a long video?

Katto generates multiple short-form vertical clips with AI transcription, captions, and a virality score, then helps you export or directly post the top picks.

Which platforms can I export to?

You can direct export to YouTube, TikTok, LinkedIn, Instagram, Bluesky, Mastodon, and Threads. You can also schedule or publish instantly.

What captions does Katto create?

Katto creates word-by-word captions in 99 languages, with multicolor highlighting and AI proper-noun correction. You can also use caption presets and export SRT.

How does Miru AI handle reframing for vertical video?

Miru AI uses face tracking and scene-aware layout switching (including split-screen and stacked layouts) to keep your subject properly centered in 9:16 without manual cropping.

How long does processing take?

Processing typically takes around ~5 minutes, from input to clips with transcription, scoring, reframing, and captions.

How do the Free and Creator plans differ?

Free is €0/month with 2 videos per month, 720p output, and auto captions in 99 languages. Creator is €12/month billed annually, includes 25 videos per month, 1080p output, and features like split-screen for multi-speaker clips, AI hook, vocal cleanup, background music, and direct export to 7 platforms.