Shorts for YouTubers who already have the videos — and zero time to clip them
You've published hundreds of hours of long-form. FastClip's AI mines that back-catalog and turns each video into up to 10 vertical Shorts in about a minute — so you can post daily without filming anything new.
Why creators use FastClip for youtubers
Your back-catalog is a Shorts goldmine
Every long-form upload already has 5-10 punchy moments hiding in it. FastClip finds them and cuts them into 9:16 Shorts, so years of footage become months of daily posts with nothing new to film.
Feed the volume the Shorts shelf rewards
The Shorts algorithm pays off consistency, not perfection. Clipping one long video into up to 10 Shorts in ~1 minute lets you post every day instead of once a week — without burning out your edit time.
Turn Shorts viewers into channel subscribers
Animated karaoke subtitles (MrBeast, CapCut, Hormozi styles) keep mobile viewers watching to the end. Hook them on a 30-second clip and they go find the full video — and your subscribe button.
How it works
Paste a link, get clips. About a minute from long video to a batch of vertical Shorts.
Paste a video from your channel
Drop the YouTube link to any long-form upload — a tutorial, vlog, podcast episode, stream VOD or commentary. No re-uploading, no exporting from your editor.
AI pulls the best moments
FastClip scans the whole video for the hooks, payoffs and standalone moments, then cuts up to 10 vertical 9:16 Shorts and burns in animated subtitles automatically.
Tweak in the browser and post
Open the in-browser editor to adjust the cut, caption style or framing, then download clean 9:16 clips ready for YouTube Shorts, TikTok and Reels.
Frequently asked questions
Can I clip videos that are already on my YouTube channel?
Yes — that's exactly what this is built for. Paste the link to any long-form upload on your channel and FastClip turns it into Shorts. You own the source footage, so you own every clip it produces. It's a fast way to mine your existing back-catalog instead of filming something new.
How many long videos do I need before this is worth it?
One is enough to start, but the real payoff is the back-catalog. If you've uploaded weekly for a year, that's roughly 50 long videos — at up to 10 Shorts each, that's a deep queue of daily content. FastClip lets you work through it one video at a time, about a minute per video.
Will Shorts actually bring subscribers to my main channel?
Shorts are how a lot of new viewers discover a channel today. A clip that hooks someone on a strong moment from your long-form makes them curious about the full video — and your channel. Animated subtitles keep mobile viewers watching to the end, which is what the Shorts algorithm rewards with more reach.
What kinds of YouTube videos work best?
Anything with clear standalone moments: tutorials, vlogs, commentary, reactions, podcast episodes, Q&As and stream VODs all clip well. FastClip looks for the hooks and payoffs, so the more your long-form has distinct high points, the more usable Shorts you'll get from each upload.
More ways to use FastClip
One AI clipping tool, every kind of long-form video. Or start from the AI YouTube to Shorts generator.
Your next 100 Shorts are already on your channel
Stop letting your long-form sit there as one upload. Turn each video into up to 10 Shorts and start posting daily. Free to start, no card required.