The Canon 600D produces files in the MOV format. If you have taken advantage of the new video clip features on the Canon 600D and produced a video in camera that is ready to load to YouTube then you may find that the MOV format is not suitable for loading or is too big to load.
Canon now supply a utility with the Canon 600D camera called the Canon Movie Uploaded to YouTube - snappy name eh! But it does what it says on the tin.
Choose your MOV file, enter your YouTube account and password and the file will get uploaded.
Simple and an example of another Canon tool that works perfectly on the Canon 600D to simplify and speed up the process of editing video and photos.