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The Craigness  
#1 Posted : Friday, December 15, 2023 3:20:04 AM(UTC)
The Craigness

Rank: Newbie

Groups: Registered
Joined: 12/15/2023(UTC)
Posts: 1
United States
Location: New York City

We just discovered a problem with our call-in guests who use advanced.vmixcall.com

The problem is easily replicable assuming the below criteria are met:

The call-in guest uses the advanced.vmixcall.com website.

The guests have a hard surface directly behind them (a wall)

it makes no difference on the endpoint hardware or browser.

The call-in guest does not use headphones or earbuds.


The beginning of the call goes well but if they get asked a question where their reply goes past 15-20 seconds, the audio becomes progressively more and more compressed until they are inaudible. The transition time between the beginning of the anomaly to the time they cannot be understood any longer is about 5 seconds or so. If they stop talking for 3-5 seconds, the problem resets and the process begins again.

This does not happen in vmixcall.com

Toggling echo cancellation on or off in advanced.vmixcall.com makes no difference.

This problem started on Monday, December 11th, 2023.

Has anyone else noticed this?
admin  
#2 Posted : Friday, December 15, 2023 11:30:52 PM(UTC)
admin

Rank: Administration

Groups: Administrators
Joined: 1/13/2010(UTC)
Posts: 5,186
Man
Location: Gold Coast, Australia

Was thanked: 4223 time(s) in 1508 post(s)
Hi,

The vMix Call web sites do not actually process or handle the audio.
Instead, they send messages back and forth between the browser and vMix so that each end can establish a direct feed (via WebRTC).

This means any audio issues are going to be due to either the audio devices on the system, or the browser itself.

You mentioned the advanced.vmixcall.com exhibiting the issue but vmixcall.com does not.
Assuming you have not changed any of the audio settings on advanced.vmixcall.com that leaves only the audio device selection as the possible cause.

vmixcall.com uses the default audio device as shown in the browser settings, while advanced.vmixcall.com allows you to change this.
My guess is perhaps a different audio device was used, maybe something like an onboard laptop mic, instead of the default device, explaining the difference in audio, so that would be the first thing to check.

Secondly, it is strongly advised to always use headphones and make sure no speakers are turned on.
This is because the browser handles all the echo cancellation and it doesn't always do a good job.

Hope this helps.

Regards,

Martin
vMix





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