How to turn YouTube videos into Shorts

Let the audience show you the moments

A long YouTube video has something a raw stream doesn't: data from everyone who already watched it. Use it before you watch a single minute.

Most replayed: on many videos, hovering over the progress bar shows a graph of the parts people rewatch most. Peaks are moments viewers went back for. Not every video has it; it tends to appear once a video has enough views.

The transcript is the fastest way through a talky video. Read it for the lines that would make a strong first second: a bold claim, a number, a question, a reveal. Then check those moments in the video.

Chapters split a long video by topic, so you can jump to the ones likely to hold a strong moment and skip the intro, sponsor reads and outro.

Comments with timestamps are viewers telling you the best moments. Scan the top comments for times, and note the ones several people mention.

Check each peak, then find the start

A most replayed peak marks where people rewatched, which is usually the payoff, not the start. Jump a little before the peak and watch at normal speed until you find where the moment really begins.

Some peaks aren't clips: a reveal that needs the whole video's context, a chart people paused to read, or the point where a sponsor read ends. Keep peaks that work on their own.

Renafy's AutoClip uses most replayed when YouTube has it, alongside the transcript and laughter, and each clip says why it was picked. Paste the link, pick the part of the video to clip, and only that part is fetched and analysed.

Livestream replays

A YouTube livestream becomes a video once it ends, so you clip it like any long video. Wait until the replay is fully processed before you start. Streams often have a slow start, so skip the first stretch unless the brief asks for it.

A replay may not have a most replayed graph yet, so lean on the transcript, the audio and live chat replay if the streamer kept it. Bursts in chat work the same way as on Twitch: they lag the moment by a few seconds.

Cut one idea per Short

1. Open on the strongest line or image. If the first second is someone saying “so anyway”, cut it.
2. Keep one idea: one tip, one story, one reaction. If the moment needs the previous ten minutes to make sense, it isn't a Short.
3. End on the payoff. Don't cut mid-sentence; if the clip ends early, extend it a few seconds.
4. Check the length against the platform's current limit for Shorts, Reels and TikTok. Shorter is usually safer when the moment allows.

Reframe and caption

Before you reframe, check whether the moment still works in a tall frame. A talking head almost always does. A screen recording, a map or a wide shot of a stage may not.

Most long YouTube videos are 16:9. For talking heads, crop to the speaker and keep the face in the upper part of the frame. If the video cuts between two people or angles, follow whoever is speaking. If the moment depends on something wide, like a demo or a graphic, a square clip may show it better than vertical.

Add word-by-word captions. Plenty of viewers watch Shorts with the sound off, and captions also help people follow fast talkers. Export at 1080p.

Mistakes to avoid

Clipping the intro. The first minutes of most videos are greetings, a sponsor or a recap. They're almost never the clip.

Trusting a peak blindly. A most replayed spike can be people skipping back to a part they missed, or rewatching a fact they wanted to write down. Watch every candidate before you cut it.

Leaving the long-form framing in place. A Short with tiny text from an on-screen graphic, or a speaker half out of frame, looks like a lazy repost. Reframe for the phone.

Using the video's title as the hook. The Short needs its own first line, taken from the moment itself, not a promise the clip doesn't keep.

Cutting only one Short. A long video usually has several moments. Clip them all in one sitting while you know the video, and spread the posts out.

Questions