In March 2020, both Chrome and FireFox will be enforcing a security update in WebRTC that requires an update in vMix Call as well.
In addition to this update, we have taken the opportunity to improve reliability in vMix Call in general.

We would appreciate anybody who regularly uses vMix Call to try out the update below and give us your feedback prior to official release:

vMix 23.0.0.41

* Updates WebRTC library for DTLS 1.2 support, required by Chrome and FireFox in March 2020 updates
* Improves connection reliability through difficult firewalls by only requiring a single port to be open for both audio and video where available. (called "WebRTC Bundling")
* General connectivity improvements when faced with unreliable internet.
* Improvements to video/audio for iOS (iPhone/iPad) callers.

http://cdn.vmix.com/download/vmix23.exe

Note: Once released, we will also work on a vMix Call update for vMix 21, so users who haven't upgraded to 22/23 yet won't be left behind.

Tested this beta (23.0.0.41) on my Samsung Galaxy S10+ using Chrome 80.0.3987.119 with phone and PC connected to the same LAN.

No problems connecting. Audio was good/clear. Video connection was 640x360 24fps @ 500kbps with about 100ms latency. Bit rate increase to about 1500kbps and latency jumped around between 150 and 60ms after a few minutes.

When I switched the Chrome browser to "Desktop site" the resolution jumped to 1280x720 but fps was still 24, connection started at 500kbps but increased to 1500kbps after a few minutes, latency was still 100ms but increased to 250ms after a few minutes.

Is there a way to verify that vMix Call and the browser have negotiated the shortest connection, in my case, my LAN? I was surprised that I didn't get a higher resolution and more fps. I'm surprised that the resolution didn't improve as the bit rate increased.

I'll revert back to version 23.0.0.39 and see if I get the same results.

- Tom

When will these browser updates come out? We have a production where we sold a vMixCall option next Tuesday and I really wouldn't like to use a preview of vMix for that... 🙄

Hi,

Android phones are not the best for testing performance, frame rate wise as they exclusively use the mobile CPU to compress the video.
This means frame rates will be a bit lower and why we set the resolution to 640x360 by default.

iPhones/iPads on the other hand use a hardware encoder and can send 720p quite easily.

Regards,

Martin
vMix

Beta works fine here. Connected vmix call to s10+, Chrome desktop site, 4G Network (Telstra), 1280x720 16-17fps, 1800-2000kbps, 45-75ms latency

I use vMix Call daily, and have a VERY high caller failure rate. Either wont connect, or disconnects randomly. When this happens we fall back to our old external Skype Box, which has no issues. Problem is my production team, not for lack of asking, seem to be unable to make a record of which callers fail. I susspect its nothing to do with vMixcall itself, but people calling in on 28.8 baud modems, or closing browsers.

I have had several reports that when a call is established on preview/solo, its all OK until you take it live, at which point the audio distorts, and then video breaks down, and the call disconnects. Its not every call, but enough to feature significantly in production reports.

Is there a logfile (outside the call manager) that I can use to do long term call analysis on?

I know I could just cut and past the logs in the call manager, but often the machine is reset, or rebooted and those records are lost.

Keith

Keith,

Have you tried the update noted in this post to see if there is any improvement?
It has now been released as an official update and should be stable.

If you email us the call passwords that fail, we can see on the vMix Call web site end, what browser the caller used and usually
if there are any firewalls etc that might be in the way. This is not available to the vMix logs due to being server side information.

Also based on the support requests we receive the number one cause of issues is using the wrong browser, i.e any browser other than Safari
on iPhones in particular.

Finally, vMix does not treat the call differently if it is on preview or output, technically it is exactly the same.
The only potential difference would be perhaps a higher bitrate to the caller as a result of the video change, which is why we recommend
always sending the caller the lowest quality setting and only increase it once you have confirmed the call is stable.

Regards,

Martin
vMix

Hey there, Was there ever an update for v21 released?
We're running v21.0.0.61 and it does not appear to be working.

Thanks!

We have a number of machines on the 4K license that are mainly used as replay systems. These were purchased prior to 2018 so cannot be upgraded past v21!

Covid has changed our work slightly and we are now exploring some new broadcasting ideas, one of which being vMix call!

I cannot disagree, $60 is a great price for what you get, however it very quickly adds up when updating multiple machines!
At the moment I’m currently exploring our different options and seeing if the update to v21 was released as mentioned in the first post.