Open the YouTube app on your phone or tablet and sign in to your account.
In the bottom right corner of the screen, tap the Create button.
You can select a clip from an already uploaded video to turn into a Short. Otherwise, you can record a new Short from scratch.
By default, Shorts are 15 seconds long. However, you can make your Short longer by up to 60 seconds.
Hold down the Capture button to record your Short, or tap it to start and stop recording.
Once you've finished recording, you can edit your Short by adding music, text, and effects.
Tap the Upload Short button to publish it.