What Is the Latency for a 1080p Live Video?
The livestream latency mainly depends on the used protocol and network conditions, instead of on the live video resolution.
Generally, the latency of RTMP stream push + FLV playback is about 2 to 3 seconds. Using HTTP-FLV can reduce the latency, but HLS is more compatible with browsers and supports cross-device playback. You can select a streaming protocol that fits your needs. For details, see Reducing Stream Latency.