Please update AVPro Video to latest v2.5.1 released at 20 May 2022 in the VRChat client.
This will enable RTSP live audio/video playback in Meta Quest2.
I've confirmed AVPro Video v2.5.1 is able to play RTSP live stream from TopazChat in Meta Quest2 standalone application.
My configuration of AVPro Media Player component is as following:
Platform Specific/Android/
  • Video API: Exo Player
  • Audio Output: Unity
  • Minimum Buffer Ms: 2000
  • Maximum Buffer Ms: 5000
  • Buffer for Playback Ms: 500
  • Buffer for Playback After Rebuffer Ms: 1000
These configs about buffers may should be adjusted to actual system load of VRChat. I confirmed that the playback is stable and low latency as 1 second in Tokyo by above example configuration.
I receved so many requests from our Japanese music community to enable TopazChat audio/video low latency streaming service in Meta Quest platform. If we can watch our live streams in Meta Quest not only on Windows, we will become more close together between Quest and PCVR community.
Thank you.