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andy_bentley's avatar
andy_bentley
Copper Contributor
Mar 10, 2022

Yealink HDMI ingest - lag and call failure

We have many Yealink MVC800ii and MVC840 MTR systems running in our meeting rooms. We're seeing real issues with HDMI ingest, particularly using the HDMI cable that connects to the MTouch II panel, a...
HDMI
Ingest
MTR
teams room
PatrickIPM's avatar
PatrickIPM
Copper Contributor
Mar 29, 2022
We are having the exact issue you described, but with the MVC640 room kits. Yealink support is being impossible to work with and demanding proof - like recorded proof of this happening. The devices are less than 6 months old and worked fine at first, but have been having multiple issues as of late.
andy_bentley's avatar
andy_bentley
Copper Contributor
Mar 29, 2022

Nice to hear we're not alone! (although sorry you're also suffering with this issue).

It is completely subjective, but I'd have to agree that it seems like a recent update has introduced the problem. We've had our MVC800ii MTRs for around 18 months and didn't have any reports of this issue until towards the end of 2021.

 

I'm pinning a lot of hope on the new Teams Cast feature (we're currently testing it) as an alternative to using Yealink HDMI/USB-C ingest or the WPP dongles.

  • PatrickIPM's avatar
    PatrickIPM
    Copper Contributor
    Mar 30, 2022
    Yealink support also just informed us of the following:

    "Regarding the problem of delay in cable content sharing, this problem has been confirmed. When the customer is sharing content, the resolution of the TV is set to 4K, and the 4K resolution causes the CPU usage of the MTR application to be too high. The delay of the auxiliary stream is high or the sound and picture are out of sync. This issue is known internally by Microsoft and may be encountered by all manufacturers.

    The solution to the delay problem is to adjust the resolution of the TV to 1080P. If some 4K TVs cannot be set to 1080P, you can purchase a third-party EDID Emulator accessory and connect it between the monitor and the HDMI port of the MCore to solve the problem."
    • andy_bentley's avatar
      andy_bentley
      Copper Contributor
      Mar 30, 2022
      Thanks for the update. We have Extron CTL-100 workplace controllers in our rooms, I'm going to check that they are configured for 1080p EDID and will advise.
      • tonyhermansen's avatar
        tonyhermansen
        Copper Contributor
        Apr 04, 2022

        andy_bentley  PatrickIPM 

         

        Having the same problem with a customer on fifteen MVC840 Systems. But the tricky thing is that it works when internal users use HDMI ingest. No problems at all. But when an external user that is not in there tenant uses this i will start to lag directly. Works for both when they share content wirelessly, But as soon as the external uses the HDMI/USB-C cable it goes bananas and video/audio lags big time. Will also try third party EDID management, but the internal/external difference is not making any sense to me.  

  • PatrickIPM's avatar
    PatrickIPM
    Copper Contributor
    Mar 29, 2022
    I agree, December is the time frame for us too when the issues started. The CAST feature looks interesting! I hope that is a good solution!!

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