Obscure Youtube Features and Behavior

I thought I’d start a general thread about these things, since I’ve occasionally noticed various weird things here and there that other people might want to talk about.

A long time ago I started building music playlists on youtube, and I frequently wanted to snarf the contents of somebody else’s playlist into my own. I googled for how to do that, and got very confusing and contradictory answers on whether it was possible and how to go about it, Then I finally figured out the issue that hardly any of the “how to” guides mention: This is a feature the Youtube Music site supports, but not the main www video site. I’d assumed if I was looking at a playlist with the same exact ID on the music side it would be the same as the one on the www side, right? It is most of the time… I think. Now I’m going to have to check more deeply and I’m annoyed because I thought I was saving time by using the music side’s “add to playlist” function.

I just found a case where it isn’t true:

So here it is on the youtube side. https://www.youtube.com/playlist?list=OLAK5uy_kgqI3U6KlD43sonyPiIMRniCrW9pYhOHg I switched over to the music version of that list by changing the www in the url to music like this: YouTube Music And I assumed it would point to the same exact list of files, but no. Check out the two different versions of “Guilty” they’re different lengths. One side has opening chatter from Elwood introducing Jake, the other doesn’t.

ETA dammit discourse, I did NOT want you to hide the URLs, the point was to show the exact coding, why did you do that?

This has little to do with the OP, but I was gratified years ago to find J/K/L works with YouTube. J/K/L is a pro video editing (Avid) feature for shuttling through video. J would shuttle backward slowly then faster as you hit J, L similarly forward, K was always Stop. YouTube does the same thing, but always at shuttle speed 1.0. Still pretty cool.

Put a space in front of the pasted link:
www.see.com?

I did open this thread to general talk about youtube functions, features, and bugs.

Both of my links in the OP have spaces in front of them. But Discourse decided to replace the second URL with the site title instead as if I had linked it to text in my post. Bizarre and unwanted behavior.

The very next list I tried to snarf into my own playlist by first replacing the www with music in the url, I found another different list. This one appears to only differ for the second playlist item, “Locked Within the Crystal Ball” The Youtube side: https://www.youtube.com/playlist?list=OLAK5uy_kWvjA3QEvygxz8-d_rmeZbz1mZKqfrsws has the official video version, and the music side has the audio-only version: YouTube Music

Yes, sorry, I didn’t read carefully enough. I see what you mean.
YouTube Music

Pasting to both title and url.
https://music.youtube.com/playlist?list=OLAK5uy_lhIaUDKtK1bB5wv4ypeknB0YIH_wreZjI

[https://music.youtube.com/playlist?list=OLAK5uy_lhIaUDKtK1bB5wv4ypeknB0YIH_wreZjI](https://music.youtube.com/playlist?list=OLAK5uy_lhIaUDKtK1bB5wv4ypeknB0YIH_wreZjI)