How to stream video to HoloLens 2 with low latency?

Fabian 6 Reputation points
2021-10-06T14:24:50.44+00:00

Hi,

I am looking for a way to stream video (without audio) to HoloLens 2 with a latency < 300ms?
I'd like to create a resizable virtual window on the HoloLens that shows the video streams.

So far I tried:

  1. "HTTP Live Streaming" (HLS) => latency too high
  2. WebRTC => not supported in Edge and Firefox Reality browser
  3. MP4 Progressive Download ("Pseudo-Streaming") => latency too high
  4. RTSP + RTP (over UDP)
    4a. with VLC Player app => latency >1s even with :network-cache=0 etc.
    4b. with Huczeq's "RTSP Player" app => best latency, but still approx 700ms

My RTSP/RTP server (gst-rtsp-server) is already properly configured for near zero latency.
I get < 150ms latency when streaming to gstreamer's rtspsrc module on another computer over wifi.

Does the HoloLens 2 provide another way to receive and show a video stream with low latency?

I haven't tested yet whether HoloLens' browser supports the Media Source Extension API (MSE).

HoloLens Development
HoloLens Development
HoloLens: A family of Microsoft self-contained, holographic devices that enable engagement with digital content and interaction with holograms in the surrounding environment.Development: The process of researching, productizing, and refining new or existing technologies.
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  1. Hernando Ren 2,171 Reputation points
    2021-10-07T08:32:00.953+00:00

    Hello, Welcome to Microsoft Q&A,

    MixedReality-WebRTC can help you to integrate peer-to-peer real-time video communication into your application, which can be used outside Web Browser. It is recommended you start with this tutorial to create a simple unity application to receive remote media. For more information please refer to:MixedReality-WebRTC

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