WaffleFrameWhy repurposing YouTube videos into Shorts works
Shorts are shown to people who have never seen your channel. Every Short is a free trailer for your long-form content, and YouTube links the two together on your channel page.
You don't need new footage. A 12-minute video usually contains 3–6 moments that stand on their own: a surprising result, a strong opinion, a quick tip. Cut those out, convert them to vertical, and you have a week of uploads from one video.
A simple workflow for YouTube to Shorts
- Open the original file from your editing project or camera — not a re-downloaded copy — for the best quality.
- Use Split in Advanced settings to cut the video into 30 or 60 second clips, or the Video Trimmer to grab one exact moment.
- Pick Fill for talking-head videos and Blurred background for screen recordings or B-roll.
- Add a title overlay so the first second explains the clip.
- Upload one Short per day and link it to the full video.
Recommended vertical video sizes per platform
| Platform | Aspect ratio | Resolution | Max length |
|---|---|---|---|
| YouTube Shorts | 9:16 | 1080×1920 | up to 3 minutes |
| TikTok | 9:16 | 1080×1920 | up to 10 minutes (upload) |
| Instagram Reels | 9:16 | 1080×1920 | up to 3 minutes |
| Facebook Reels | 9:16 | 1080×1920 | up to 90 seconds |
| Snapchat Spotlight | 9:16 | 1080×1920 | up to 60 seconds |
Platform limits change regularly — check the platform's help center for the latest values.
Who is this for?
YouTubers
Turn your best long-form moments into Shorts to reach new viewers.
Podcasters
Convert video podcast clips into vertical highlights for TikTok and Reels.
Gamers
Keep the full gameplay visible with a blurred background.
ASMR & satisfying creators
Zoom in on the action so every detail fills the screen.
Tips for best results
- Keep important text and faces in the center — platform buttons cover the bottom and right side of vertical videos.
- Use Fill only when the action stays in one area; otherwise use Zoom.
- Export at 1080×1920 — lower resolutions look blurry on modern phones.
- Shorter is better: clips of 15–30 seconds often get more replays.
- Add a title overlay in the first second so viewers know what they're watching.
- Don't upload the same clip to every platform at the exact same time; spread your posts.
Frequently asked questions
Can I turn an existing YouTube video into a Short?
Yes. Load the original video file (the one you uploaded to YouTube) into the converter, choose a style and export a 1080×1920 vertical MP4. Then upload that file as a new Short in YouTube Studio. Use the split option to create several Shorts from one long video at once.
How long can a YouTube Short be?
YouTube Shorts can be up to 3 minutes long, as long as the video is vertical or square. In practice, 15 to 60 seconds tends to keep viewers watching to the end, which helps the Short get recommended. The split option creates 15, 30 or 60 second clips for exactly this reason.
Can I use clips from other people's YouTube videos?
Only if you have the rights to them. This tool is meant for repurposing your own content or footage you are licensed to use. Reposting other creators' videos can lead to copyright claims or strikes on your channel, regardless of how you converted the file.
Will Shorts made from my long videos hurt my channel?
No. Shorts and long-form videos are recommended separately, and many creators see new subscribers arrive through Shorts. The key is that each Short is interesting on its own — a clear hook in the first second and a payoff before it ends — rather than a random slice of the full video.
