YouTube has changed up the interface of its video editor, simplifying it and allowing easier access to its color correction filters. It has also added new real-time previews. Check it out here.
YouTube has released an update to its Video Editor that will enable one-click color correction and stabilization. Once you upload a video, YouTube will autodetect whether your video needs either of those features and ask you whether you want to apply them. You can see a side-by-side comparison of the old and new footage before you accept the changes.