Suppose that there is a website hosted in USA, with most of its users in the USA. The website is owned by a Canadian corporation.
Suppose that the website allows users to create videos using their mobile devices. These videos are then exhibited on the website at a publicly-accessible but obfuscated url (ie. you can't browse to it or search it to find it, but once you have the link anyone can share it). The videos are recorded without sound and are always less than 30 seconds long. We host the videos.
Question: if the website operators allow users to add any music they want to the video, and they add something they don't have a license for (Jay-Z or whatever), is this illegal, and if so is the website/corporation liable?
I see this happening on Tiktok a lot so maybe in the USA it is even ok to do this if the videos are as short as ours?