You've got a long YouTube upload and you want Shorts out of it — for reach, for repurposing, for keeping up with a posting schedule. There are three common ways to do it, and they differ a lot in speed and effort. Here's how each works.
Option 1: Manual trimming
Open any video editor, scrub through the source, and cut out the moments you already know are good. It costs nothing but your time, but "you already know" is doing a lot of work in that sentence — finding the good moments in an hour-long video is the slow part.
Option 2: A cloud AI clipping tool
Paste a URL and a web tool suggests clips automatically. Convenient, but you're uploading your video to (and trusting) a third-party service, free tiers cap how many clips you get, and lower tiers often add a watermark.
Option 3: A desktop app (most control & private)
A desktop clipping app gives you the most control. With ClipSonic, you paste the video URL and it downloads and transcribes automatically, then AI suggests ranked clips with a hook reason and viral score. Because rendering runs on your computer, there's no watermark, no per-clip cap, and the source video is never uploaded.
Best for control: a desktop app lets you pick the framing mode (center, face-track, duo split, gameplay split) and caption style per clip — not just a one-size auto-crop.
Step by step with a desktop app
- Get the URL or file. Copy the YouTube link, or use a local recording.
- Add it to ClipSonic. Paste the URL or drag in the file.
- Let AI find the highlights. Review ranked suggestions with a hook reason and viral score.
- Frame, caption, export. Pick a framing mode and caption style, then render a finished 9:16 MP4.
Don't want to use AI at all?
Manual mode auto-splits the whole video into fixed-length clips (30/45/60/90/120s), snapped to natural silence so cuts don't land mid-word — no AI or API key required. Useful if you already know your format and just want the cutting automated.
Turning a whole channel's backlog into Shorts? See ClipSonic for YouTube creators. Download ClipSonic free and clip your first video in minutes.