Streaming services have been in the news quite a bit lately. Most notably, Hoopla (https://www.hoopladigital.com/home ), which has been characterized as "OverDrive for video". Another platform that's being used by many academic libraries is Swank, http://digitalcampus.swankmp.com/ , which allows for more controlled use and licensing.
In addition to more wide open services like Vimeo, YouTube and UStream, there are also services like Streamhoster and CamZone and ones tied to class management systems like Kaltura.
What service does your organization use?