The phrase "copyright violation" means using someone else's work without their permission. It is a legal term for copying or using creative material, like music, videos, writings, or images, that is protected by copyright law. Full definition
The owner of the copyright can take all the normal actions for copyright violation including seeking an injunction to stop the breach and / or suing for damages. (law.stackexchange.com)
There's also a risk of copyright violation unless the video is in the public domain, or you have permission from the copyright holder. (techradar.com)
This is a violation of the company's contract, and also grounds for legal copyright violation in most countries. (howtogeek.com)