Microsoft Stream Plan 2 for Office 365 Add-On (Nonprofit Staff Pricing) includes all the video streaming and collaboration features of Plan 1, combined with the ability to find more videos using deep searches, based on in-content signals like speech to text. Plan 2 also allows the user to interact with video content in richer ways using face detection and audio transcripts. You can also watch videos or live events, upload videos, and search automatically generated transcripts.