Simulcast to improve Call Quality for Group Calling
In group calls with three or more users, Simulcast helps to preserve call quality and bandwidth in situations where one user with poor network conditions acts as the lowest common denominator and degrades the video experience for all users. Simulcast is a technique by which a video feed is encoded with different qualities and sent to a selective forwarding unit (SFU). The SFU decides and sends the video feed with the optimal quality to each user based on the receiving user’s respective network. Lower resolution/bitrate content can be sent to the receiver on poor network and higher resolution/bitrate content can be sent to receivers on good network, thereby minimizing the impact of the lowest common denominator. One common use case that demonstrates the benefits of Simulcast is a receiver on a large screen (e.g. desktop) in a call with another receiver on a small screen (e.g. mobile) will not be affected by the quality of the smaller view. Simulcast will send a higher resolution to the desktop receiver and a smaller resolution to the mobile receiver. Learn more: Azure Communication Services Simulcast - An Azure Communication Services concept document | Microsoft LearnNew Call Readiness Tools to Improve the User Experience
Help new customers using virtual communication experiences for the first time manage issues related to devices, connectivity, and permissions. Access Call Volume Level: Developers may want the ability to check and display to end users the current microphone volume. Learn more in our QuickStart guide. Detect Multiple Tabs Using Azure Communication Services SDK in a Browser: Azure Communication Services has launched the ability for developers to detect if multiple calls are running simultaneously across multiple browser tabs. Learn more in our overview. See more feature updates in our latest blog posts: Azure Communication Services Calling Features Update - Microsoft Community Hub Azure Communication Services February 2023 Feature Updates - Microsoft Community Hub
