Katto is an AI video clipping tool for creators. Paste a YouTube URL or upload a video (up to 90 min): the pipeline finds the best moments, scores each clip for virality (Hook/Flow/Value/Trend โ with a written explanation), reframes intelligently to 9:16 (face tracking, split screen for 2 speakers, 2ร2 grid for panels, gaming stacked layout โ it even clips videos without speech: sports, gameplay, trailers), burns animated captions in 99 languages, and can dub your clip into 8 languages.
Publish or schedule directly to YouTube, TikTok, Instagram, LinkedIn, Bluesky, Mastodon and Threads.
Flat monthly pricing โ 25 videos is 25 videos, no credit math. Built solo, in public.
A startup from Japan that is founded by Anthony Papoti.
Smart auto-reframe
Auto-reframes 16:9 โ 9:16 with face + body tracking, no manual keyframing
Multi-speaker split-screen
Detects 2+ people talking and auto-splits the screen; 2ร2 grid for panels
Gaming & combat layouts
Stacked webcam+gameplay layout and combined-frame action/combat framing
Clips no-speech video
Works on sports, gaming and trailers โ not just talking-head content
Virality scoring
Scores every clip on Hook / Flow / Value / Trend, with a written explanation
Auto captions (99 languages)
Word-level animated subtitles with customizable templates
AI dubbing (8 languages)
Automatically dubs your clip into 8 voiced languages
AI hook generator
Writes and burns a scroll-stopping hook onto the opening seconds
One-click publishing
Schedule + publish to 7 platforms (YouTube, TikTok, Instagram, LinkedIn, Bluesky, Mastodon, Threads)
Edit once, apply to all
Propagate captions/layout/style to every clip, then auto-schedule the week
Flat pricing, no credits
25 videos/month, any length up to 90 min โ one flat price
Built-in editor
Transcript trimming, captions, B-roll, background music, brand kit
Foria - Japanese perfume brand
Next.js, Python, FFmpeg, WhisperX on GPU (transcription + diarization), YOLO + MediaPipe (vision), Claude (scoring & enrichment), PostgreSQL (Supabase), Cloudflare R2.
Built by a solo founder, in public. The goal: make repurposing a 2-hour podcast into a week of shorts a one-click job, including the videos other tools can't handle (gaming, sports, trailers). Every feature ships after being calibrated frame-by-frame against real content.
Podcasters, streamers and content creators who publish long-form video and want daily short-form clips without editing โ plus the social media managers who do this for clients.
Most clipping tools charge by upload minutes (credits) and only handle talking-head content. Katto charges a flat monthly price, handles videos with or without speech, dubs clips into 8 languages, and publishes directly to 7 platforms โ YouTube, TikTok, Instagram, LinkedIn, Bluesky, Mastodon and Threads. One tool from long video to published short.
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