Yeah, I wouldn’t have a backup channel and that way we were publishing the same video with YouTube twice. Problem with that is you have two– the video is going to compete with each other and search results and search unrelated videos. You don’t want to split all your views among two videos. I know some people who will upload it to a second channel and just keep them private there. But what sense does that make?
If you want to download as videos itself, you can use other free tools like Free Youtube Download to download all videos with a single click. Please be careful while installing this tool as it optionally installs a browser toolbar and modifies search preferences. So please make sure you read and uncheck the optional checkboxes while installing to avoid surprises in your browser.
Depending on how many videos you have in your channel and what your video quality is like that you uploaded and everything, this could be a really large file. So give it a lot of time to prepare and then to download. And make sure you have plenty of disk space on your computer to save all of that if it is a really large file. If I went through this too fast or you want to have more detailed instructions, I’ll put a link in the description below this video that will take you through a step-by-step walk through details of how to download and archive your entire YouTube channel, if you want to back it up and save for later.