How does it determine what is and isn't for kids? I noticed this "feature" watching Tom Lehrer's Poisoning Pigeons In The Park, which is emphatically not for kids.

https://www.youtube.com/watch?v=hf-eIgFJg4w

For starters, believe there is a option to identify a video when uploading it to YouTube as being for kids. There also settings to identify channel as being made for kids.

It’s a checkbox in Studio, Youtube’s upload and video management tool

You can work around this by searching for the video within YouTube and adding it from the search results page.

Ha, love this!

It’s available with another URL in YouTube, maybe it was re-uploaded:

“Code Break 9.0: Events with Macklemore & Scott Forstall” https://www.youtube.com/watch?v=-bcO-X9thds

Forstall’s part (living in a tent in a park with his parents and brother, being able to afford only 2 minutes of warm shower per week): https://www.youtube.com/watch?v=-bcO-X9thds&t=31m51s

Fish story specifically: https://www.youtube.com/watch?v=-bcO-X9thds&t=35m54s

Not sure why Youtube thinks its a kids video, but the preventing of saving to a list is may be because of child predators targeting videos featuring kids? https://news.yahoo.com/t-suspends-youtube-ad-spending-203549...

https://invidio.us/ likely has no such restrictions, you may wish to check it out.

Why does it prevent you from saving a kids video when you presumably are not a kid?

Because Google clamped all different concerns about kids on YouTube into the one feature without differentiating between videos with kids and videos for kids, and there was concern about recontextualisation of videos with kids as pedophilic erotic by including them into public playlists with inappropriate names and descriptions.

COPA says something like even if the user identifies as an adult through an age gate you are liable for the anti tracking stuff if the content is kid friendly/targeted at kids.

I don't know why the Watch Later feature is disabled for kids videos, but I think it's pretty common for kids to use their parents' accounts, particularly with device sharing (family iPad, or kid uses parent's phone).