Fast Video Cataloger is a cheap prosumer cross-platform app that does exactly what you are looking for, but It's not exactly designed specifically for professional videography, so it probably doesn't handle raw formats for example. You can drag clips from your catalog into your editor though. Source: over 2 years ago

I use Yout for music. Go to a youtube video, and change the URL from youtube.com to yout.com. There is a download limit of 3 songs per hour, but that can be avoided by using a VPN. Source: about 1 year ago

I use this one all the time https://yout.com/. Source: about 1 year ago

Https://yout.com/ I use that, but you can only download like 5 vids every few hours, so if you’re like mass downloading for some reason it might not be the best for you. Source: over 1 year ago

Just saying, if you download a song from youtube as an mp3 (I just use yout.com), you can upload it to your local files on spotify, and then add it to your playlists like any other song. Source: over 1 year ago

You can just put the url of one of the youtube videos into yout.com and download it as an mp3, and then look on your "local files" from spotify and add it to any playlist!! Source: over 1 year ago