I used wowza’s nDVR function, but shaka Player could not play HLS DVR real-time stream
I can try and help you here. HLS is not a real-time streaming protocol. It will always have some latency as the playback requires a certain amount of segments before it will begin.
Also and perhaps even more importantly:
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Shaka Player is a JavaScript library from Google that delivers audio and video content to any type of device using MPEG-DASH streaming.
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Captions and DVR playback aren’t supported in Shaka Player.
https://www.wowza.com/docs/how-to-use-google-shaka-player-with-wowza-streaming-engine-mpeg-dash
