Please note that downloading videos from YouTube is a breach of their Terms of Service.
YouTube is a very useful resource for creators looking to add background videos to their beatmaps. If a song has a music video, it will most likely be on YouTube, and probably compressed at that golden point where the video looks decent but will not be too big in size.
This tutorial is intended for those who can not find the video elsewhere but YouTube.
YouTube to Mp3 is an online video converter service designed for YouTube. Using it is very straightforward: first, paste your desired YouTube video link into the text box; then, select
Convert; and after the conversion is finished, click
Download to obtain the video file.
youtube-dl is a command-line program to download videos from YouTube and other sites.
youtube-dl -f bestvideo <video link>
Downloading YouTube videos with youtube-dl
Main page: Compressing Files
After downloading the video, you can load the video into the beatmap as you would normally through the design tab in the beatmap editor. However, not only will the video contain audio tracks that will be unused and take up extra space, the beatmap Ranking Criteria forbids videos with audio tracks as they are not used. See Compressing Files for ways to remove audio from the video.