Can SRS support specified delay for WebRTC playback?

[peterlij]

WebRTC has a feature that allows the server side to set a specific playback delay. This setting can reduce the delay by about 20-30ms in remote control scenarios. So, should we consider if SRS can support this feature?
https://webrtc.googlesource.com/src/+/main/docs/native-code/rtp-hdrext/playout-delay/README.md

Chrome already supports this feature.

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[xiaozhihong]

This is a really great feature. It can further reduce latency for interactive applications. We should consider supporting it.

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[winlinvip]

I also think this is an interesting feature, and you are welcome to submit a patch.

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