There are great content on YouTube that I would be sad if it went away. Therefore, I did some digging around and found a [great discussion](https://www.reddit.com/r/DataHoarder/comments/863aid/what_is_your_method_of_viewing_youtubedl_backed/dw25vnm/) on Reddit on backing up YouTube videos. The solution is based on `youtube-dl` and I modified the script a little to fit my needs.
The options added to `youtube-dl` makes it so that meta information such as subtitles, thumbnails, etc get added to the video.