freeze

Last updated 2020/08/13 14:19:16

Freeze refers to choppy audio or video playback caused by a poor network connection or limited device performance during real-time audio and video communication.

To highlight transmission qualities and help developers locate issues, the Agora RTC SDK provides callbacks that report audio and video freeze statistics during a call. Developers can also track freezes with Agora Analytics.

The Agora RTC SDK and Agora Analytics use different algorithms to decide when a freeze occurs:

Product	Video freeze	Audio freeze
RTC SDK	In a video session where the frame rate is set to 5 fps or higher, video freeze occurs when the time interval between two adjacent video frames is more than 500 ms.	In the reported interval, audio freeze occurs when the audio frame loss rate reaches 4%.
Agora Analytics	Occurs when the video freezes for 600 ms or more.	Occurs when the audio freezes for 200 ms or more.