How to turn YouTube videos into Shorts
Your back catalogue is full of Shorts you haven't cut yet. Here is the workflow for turning long YouTube videos into vertical clips that actually get watched.
In this article
Start with videos that already have moments
Not every long video makes good Shorts. The best source material has self-contained moments — a strong tip, a story, a hot take — that make sense without the surrounding context. Tutorials, talks, podcasts, and Q&As clip well; slow, meandering footage does not. Before clipping, skim for the two or three points you would tell a friend about. Those are your first Shorts.
Find the moments without scrubbing for an hour
Manually scrubbing a long video for clip-worthy moments is the part that kills the habit. Instead, work from the transcript: read for the lines that stand on their own, or let a clipping tool rank candidate moments so you start from a shortlist. Either way, aim for a handful of strong clips rather than slicing the video into dozens of forgettable ones.
Reframe 16:9 into 9:16 around the speaker
YouTube videos are horizontal; Shorts are vertical. A static center crop cuts off anyone who isn't dead-center, so reframe around whoever is speaking — the crop should follow the action the way a human editor would. This single step is what makes a Short look made-for-vertical instead of a letterboxed afterthought.
Caption for the mute majority
Most Shorts are watched without sound at first. Burned-in, word-by-word captions keep silent viewers watching and survive across platforms, since they can't be stripped or re-rendered by each app. Keep them editable until export so you can fix names and restyle lines after seeing them in context.
Publish, then link back to the long video
Shorts are top of funnel. Once a clip is performing, point viewers to the full video in the description or a pinned comment, so a 30-second hook turns into real watch time on the long upload. This is how creators use Shorts to grow the main channel rather than cannibalize it.
FAQ
Can I make Shorts from someone else's YouTube video?
Only from content you own or have the rights to use. Clipping your own long videos into Shorts is the intended workflow; reposting other creators' footage without permission risks copyright strikes.
How many Shorts can one YouTube video produce?
It depends on how dense the video is, not how long it is. A tight 20-minute talk might yield five strong Shorts, while a rambling hour might yield three. Quality of moments beats raw runtime every time.
Do Shorts hurt my long-form watch time?
Not if you use them as a funnel. Shorts reach new viewers; linking them back to the full video converts that reach into long-form watch time and subscribers.