I uploaded a video to YouTube and now I want to cut it shorter using the YouTube Editor without having to save repost it as a new video.
Is this possible?
Yeah, it's simple enough.
Go here https://www.youtube.com/enhance?v=[Your video ID]
Go to "trim".
Use the slider to change it as required.
Save changes (not save as new video).
Wait approx 30 minutes and it should have updated.