...

rtp_paced_sender=true
rtp_paced_sender_initial_rate=200000
rtp_paced_sender_increase_interval=50
rtp_paced_sender_k_up=0.9

and restart WCS.

Stream distribution optimization

A stream playback quality may drop when a number of subscribers are viewing it simutlaneouly (from 100 and more): low FPS, freezes. However, server capacity and channel bandwidth may be enough. In this case it is recommended to enable multithreaded stream distribution to subscribers using the following parameter

streaming_distributor_subgroup_enabled=true

In this case, audio and video client sessions are distributed by groups.

Maximum number of video sessions per group can be set with the following parameter

streaming_distributor_subgroup_size=50

Maximum number of audio sessions per group can be set with the following parameter 

streaming_distributor_audio_subgroup_size=500

Frame queue size per group and maximum frame waiting time (in milliseconds) are set by the following parameters

streaming_distributor_subgroup_queue_size=300
streaming_distributor_subgroup_queue_max_waiting_time=5000

for video and

streaming_distributor_audio_subgroup_queue_size=300
streaming_distributor_audio_subgroup_queue_max_waiting_time=5000

for audio sessions respectively.