Latency issue about live

[ltebean]

for how many seconds?

[garudaonekh]

around 1 second.

[ltebean]

1s delay is already very short
generally, the acceptable range for rtmp delay is 2-4s

[garudaonekh]

I have seen Bigo Live. its delay is 10-500ms(My guess)--nearly real time. I think it's even better than Facebook live.
Just wonder how they achieve it.

[San-Jeevan]

theoretically if you are in same country as the relaying server you can get around 300ms.
Remember the latency will be like this:

• Capture video, encode, packetize and send to server: 60ms
• Server to process: 10ms
• Stream receiving device to decode: 40ms
• Round trip time forth and back from server: same country ~40-100ms.
• buffer on server, streaming client or streaming receiver: this can have massive impact on latency

but too many factors here. your device has to have good enough CPU.

Also I dont know Bigo Live, but they may be using webrtc?
Device-2-device streaming without relaying server.

//edit:
jsut seen bigo live, they dont use webrtc as its multicasting.

[garudaonekh]

@San-Jeevan: Thank you so much for explaining in detail. Much appreciated!