How to Turn a Long Video into Short Clips for TikTok, Reels & Shorts

By NUR Technologies · October 25, 2026 · 5 min read

One podcast, interview, stream or lecture can feed weeks of short videos, if you can find the good moments without scrubbing through two hours of footage. Here is a repeatable workflow to turn a long video into captioned vertical clips on your Mac.

The workflow in one line

Find the strongest moments, cut them cleanly, add captions, reframe to vertical and export them all at once.

Do it with Offcuts

1. Drop a videoA file from your Mac or a link to a video.
2. Let it find the momentsOffcuts listens to the whole video, scores every second and picks the strongest moments, cut cleanly at the end of a sentence so clips never stop mid-word.
3. Review and trimKeep the moments you like, trim the rest.
4. Add captionsOn-device AI writes the words with exact timing. Pick a style and highlight each word.
5. Export in batchChoose 9:16 for TikTok, Reels and Shorts or 16:9 for YouTube and export every clip in one go.

What makes a clip worth posting

• A clear hook in the first seconds: a claim, a question or a surprise, not a slow intro.
• One idea per clip: if you need “as I said before”, it is the wrong cut.
• Starts and ends on a full sentence: abrupt cuts feel amateur.
• Readable on mute: captions are not optional on vertical video.
• Short: cut until removing more would lose the point.

Why local processing matters here

Long videos are big and often private: client calls, unreleased episodes, course material. Offcuts does transcription, face tracking and rendering on your Mac, so none of it is uploaded and there is no per-minute fee.