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SkywalkerIsNull's avatar
SkywalkerIsNull
Copper Contributor
May 23, 2021

My webcam freezes on other participants end

Hello everyone,

 

This one has been bugging me for a while and I original put it down to using the preview builds of Windows. But I now have clean installed with the Windows 21H1 as of 22/05/2021 and the issue was there from the very first attempt at using Teams.

 

When I start/join a meeting in the desktop app, and we all have our webcams on, I can see everyone else's feed. And I can see my own feed. My feed is clear and the video is continuous on my side. However, my feed freezes every few seconds on everyone else's end resulting in less than ideal visuals on their end.

 

If I swap to using the browser version, my video comes through perfectly clear.

 

My data connection is not constrained with a consistent 50mbps+ download and 15mbps+ upload. I am using ethernet from the PC to the NBN router:

 

 

Attached are two videos that are recorded to Streams. One from the desktop application, and the other from the browser.

 

The following is what I have tried to do to troubleshoot (roughly in this order):

  • Different USB ports
  • Different web cams (my main webcam is a Logitech Streamcam)
  • Different desktop applications (V-Cam, Logitech Capture)
  • Connect to wireless network
  • Disabled QOS in the Teams admin portal
  • Disabled QOS on my router,
  • Registry hack to enable webcam work around

 

I have not seen this issue in any other video conferencing systems (Zoom, WebEx etc.)

 

Any ideas on where else to look would be greatly appreciated.

    • SkywalkerIsNull's avatar
      SkywalkerIsNull
      Copper Contributor

      Hey StevenC365 

       

      CPU and GPU are at a nominal usage level, with CPU at approx. 5% to 10% during the teams meeting

       

      I haven't seen the GPU go above 50% and it is nominally at 10% utilization during the call (4K monitor, usually have GPU bound programs in the background).

       

      After running the Network Assessment Tool:

       

      PowerShell 7.1.3
      Copyright (c) Microsoft Corporation.
      
      https://aka.ms/powershell
      Type 'help' to get help.
      
      PS C:\Program Files (x86)\Microsoft Skype for Business Network Assessment Tool> .\NetworkAssessmentTool.exe
      Skype for Business - Network Assessment Tool
      
      
      Initializing audio call.
      
      ***************
      Starting new call
      Iteration 1 / 1
      
      Audio call started. Waiting for call to end...
      Call should end shortly after configured duration of 17 s.
      
      Call completed.
      Packet loss rate:     0.00117785630153121
      RTT latency:          20 ms
      Packets sent:         849
      Packets received:     848
      Average jitter:       5.61292 ms
      Packet reorder ratio: 0
      **************

       

      Or from the report: 

      CallStartTime	PacketLossRate	RoundTripLatencyInMs	PacketsSent	PacketsReceived	AverageJitterInMs	PacketReorderRatio
      24/05/2021 08:38:18	0.00117785630153121	20	849	848	5.61292	0

       

      • StevenC365's avatar
        StevenC365
        MVP

        SkywalkerIsNull 

         

        Nothing wrong with either of those, clearly there is nothing in particular that is constrained.

         

        It would be useful to look at the Call Records that your admin will be able to do through Teams Admin Centre, dig through the details. It's a puzzling one TBH, as your preview is working perfectly it's unlikely to be the camera or USB bus, network looks fine during that test (might be worth repeating). Also clearly audio packets are getting though just fine.

         

        I'm slightly interested by your comments about disabling QoS, is there something on your network that might be changing traffic between you are the internet?

  • mark63355's avatar
    mark63355
    Copper Contributor
    Out of curiosity, what Internet provider are you using? I'm experiencing the same issue where it seems I can recieve video and screen shares fine, audio incoming and outgoing is fine (although apparently audio improved when I seitched off my camera), but I cannot share my video or screen with others without it being extrememly laggy.

    The issue for me hit when I moved to NBN. I've tried multiple routers and it works fine if I hotspot to my phone.

    I've read that Optus and Telstra have the issue but switching to other providers resolves it. I'm slightly sceptical but am considering making the switch.
    • SkywalkerIsNull's avatar
      SkywalkerIsNull
      Copper Contributor

      Hey mark63355 annoyingly enough, it started again 2 days ago after we had a blackout.

       

      I am with Telstra for both my NBN connection, and my mobile. In your digging, or what you have seen/read/heard, is there any specific reason that Telstra or Optus are having this issue but the others are not? Or maybe it is an NBN specific issue?

      • AlexPotter's avatar
        AlexPotter
        Copper Contributor

        SkywalkerIsNull 

         

        Joining the team with the same problem: Web based version of MS Teams works just fine. Installed app has no issues with calls but screen sharing is terribly luggish. Interesting if I am using my company laptop of the same network if has no issues, so I am not really sure it is related to ISP (I am on Telstra HFC btw).

         

        And I don't really understand why web-based version is not affected.

  • Aidanb99's avatar
    Aidanb99
    Copper Contributor

    similir this end. My webcam keeps freezing during a teams call. Ok with zoom. I was wired to my router at 100 full duplex. When we went wireless it worked. No idea why wireless fixed the issue. SkywalkerIsNull 

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