james12341480 video recordings of meetings have been stored in individual OneDrive accounts for over 2 years now. The only way those recordings get into Stream Classic is if someone uploads the file there.
Depending on how your organization currently organizes videos in Stream Classic will drive where you will put them. Anything that you have organized by Group or Channel or that is a Companywide video in Stream Classic you will put into a SharePoint site. If you have an intranet, those may need to go to the site of the group the videos are relevant to. Or. . . you may decide to build a video portal in SharePoint that is organized in a similar way as the way your videos are organized in Stream Classic right now. It depends on how your organization uses videos. There are some examples of ways to set this up on the https://aka.ms/StreamPortals page.
If you or someone else in your company is interested in some help with figuring this out or with some training, let me know or drop me a personal message.