Latency: What's the process for measuring latency? Typically, it's around 150ms.

[winlinvip]

To test the end-to-end latency of a WIHP stream published using FFmpeg, you can capture your desktop using FFmpeg, open a stopwatch or miaobiao in the browser, and compare the player with the original stopwatch.

~/git/ffmpeg-webrtc/ffmpeg -f avfoundation -framerate 25 -pixel_format yuyv422 -i "2:0" \
    -vcodec libx264 -pix_fmt yuv420p -profile:v baseline -preset:v ultrafast \
    -b:v 800k -s 1024x576 -r 25 -g 50 -tune zerolatency -threads 1 -bf 0 \
    -acodec libopus -ar 48000 -ac 2 \
    -f whip 'http://localhost:1985/rtc/v1/whip/?app=live&stream=livestream'

Note: The parameter -i "2:0" is formatted as a video:audio device ID. Please use the ~/git/ffmpeg-webrtc/ffmpeg -f avfoundation -list_devices true -i "" command to list device ID and information.

Note: It is recommended to keep the threads=1 setting to prevent the occurrence of the Multiple Slices Issue. Please refer to Known Issues for more information.

The test results are incredible! The image below shows that the latency is around 150ms.