The link below provides the old answer to this question. The new YouTube playlist play interface is very different. So, what's the trick now? Tired of searching!
How can you transfer your playlists from one YouTube account to other?
The link below provides the old answer to this question. The new YouTube playlist play interface is very different. So, what's the trick now? Tired of searching!
How can you transfer your playlists from one YouTube account to other?
The top answer no longer works, but this reddit answer functions as of May 2021.
You can copy the other person's playlist to the new playlist by taking the url of the other person's playlist, swapping out the www for music (www.youtube.com to music.youtube.com ) which will give you the youtube music version of the playlist. from there you can click on the three dots and there will be an option to add all to playlist.
Done! {See Attached Screenshot}
In order to see with the "Add all to..." button you need to append the following to the playlist URL: &disable_polymer=true
&disable_polymer=true
Commented
Jun 22, 2017 at 6:39
A pretty fast work around for this in almost as many steps as using the non free 3rd party website, with only a few more clicks than number of videos in the playlist would be:
The only suggestion I've seen thus far is to go to the playlist, add all the items to your watch later list, then select them all and select to add them all to a new playlist. It's hackish and silly. I wanted to execute some javascript via an in browser editor to add each video to the watch later list in one fell swoop. Unfortunately jQuery doesn't seem to be loaded and I don't feel like writing the straight javascript. Hopefully someone will write some add ons for browsers to do just that. Or possibly go through the YouTube API.
Liking a playlist will add it to the “playlists” section in the vertical menu bar on the left
I just found out another alternative for grabbing someone’s playlist by accident (though the playlist appears in your channel, you don’t actually copy their playlist to your own collection of playlists).
I was trying to delete playlists on the desktop, but I noticed some extra playlists there were appearing in my tablet. These playlists were in the vertical menu bar on the left, and I couldn’t delete these particular playlists.
Going back on the desktop, I didn’t see these playlists when I clicked on “playlists” on the top, which is to the right of your name.
I found out that they weren’t actually my playlists. I initially didn’t know why someone else’s playlist were showing up in my list of playlists, but then I noticed that I had liked their playlist.
Liking a playlist will add it to the “playlists” section in the vertical menu bar on the left (not the top). I suppose that the “playlists” on the left are your playlists, as well as other people's playlists that you have liked.