logo

Live Production Software Forums

www.vmix.com

Welcome Guest! To enable all features please Login or Register.

Notification

Icon
Error
Logitech Brio X2, One Cam freezes - One Brio Freezes in vMix
Options
Go to last post Go to first unread
Previous Topic Next Topic
Cswa  
#1 Posted : Tuesday, April 13, 2021 3:41:09 AM(UTC)
Cswa

Rank: Member

Groups: Registered
Joined: 3/15/2021(UTC)
Posts: 15
United States
Location: Brooklyn
When I use latest version of vMix with my Logitech webcams the first webcam works fine, but the second one loads and eventually freezes with the same frame visible forever. When I use two different webcams, this does NOT happen. I can run one of my logitech Brios through the Logi-Capture software, but I have to set up vMix first AND load one Brio first, otherwise I get a camera unavailable issue. The Logitech-Capture software doesn't seem to allow the loading of two instances on the same computer; however, it can adjust both cameras, but not stream from both cameras.

I notice that in vMix both Brios have exactly the same name. I can change the name of one of the cameras, but this doesn't help and I still get webcam freeze.

The Logi-Capture Software is a special software that can be downloaded from Logitech for adjusting your webcam. It allow streaming, but ONLY ONE camera at a time, and disallows two instances of the Logi-Capture on the same computer.
Back to top

Wanna join the discussion?! Login to your vMix Forums forum account, or Register a new forum account.
Back to top  
Vince Beck  
#2 Posted : Tuesday, April 13, 2021 6:40:19 AM(UTC)
Vince Beck

Rank: Advanced Member

Groups: Registered
Joined: 7/28/2019(UTC)
Posts: 351
United States
Location: Santa Rosa

Thanks: 1 times
Was thanked: 53 time(s) in 51 post(s)
I've seen people stream with 2 Brios. I would check all USB ports, you might be drawing too much power from the USB ports if anything else is plugged in there. An LED lit mouse, Keyboard, or a Streamdeck would probbaly be too much without a powered hub on a laptop.
You can also turning off power management in Windows for those USB ports.
Back to top
WWW
Cswa  
#3 Posted : Tuesday, April 13, 2021 7:14:08 AM(UTC)
Cswa

Rank: Member

Groups: Registered
Joined: 3/15/2021(UTC)
Posts: 15
United States
Location: Brooklyn
I am using a "Plugable 7" USB Hub with its own AC-Wall-Wart power. By the way, I can stream with 2 webcams. I also have Papalook webcam and I CAN use both those USB webcams at the same time. Just that the Papalook "burns-out" the highlights, which is its problem. It was a much cheaper webcam. The fact that I CAN use 2 webcams and I CAN use both Brios (but one has to come through its Logi-Capture software) makes me think that this is not a performance-spec issue or USB issue. I suspect it is a software glitch in vMix, but I could be wrong. Both the Logi-Capture and vMix hog the video-stream and refuse to let the other use it. That is why I have to fire up vMix first and hook up one Brio, before firing up Logi-Capture. Then when I fire up Logi-Capture, it can only access the Brio that was not already used by vMix. Then I pipe the Logi-Capture stream through vMix, because vMix sees the Logi-Capture. Logi-Capture is designed to control all Logitech webcams, but it can only stream one-at-a-time. It also does not allow multiple instances.

So I have a glitchy workaround, but am wondering if there is a REAL solution. I also contacted Logitech support as well.
Back to top
Cswa  
#4 Posted : Tuesday, April 13, 2021 7:25:53 AM(UTC)
Cswa

Rank: Member

Groups: Registered
Joined: 3/15/2021(UTC)
Posts: 15
United States
Location: Brooklyn
OK, I just received a reply from Logitech Support. They say that both webcams are registering as the same device on Windows 10. That is that they both have the same PID (Process ID). This means that vMix or anything else has NO WAY to distinguish between the 2 cameras, thus forcing it to choose one camera and ignore the other.

They suggest that I return one camera for another model, that way they will show as unique devices. Hard to believe that in 2021 there is no way to distinguish 2 of the same peripheral. This is whose responsibility? Probably a lame excuse from Logitech.

This could be a lesson to anyone who wants to try the same approach.
Back to top
Vince Beck  
#5 Posted : Tuesday, April 13, 2021 7:36:50 AM(UTC)
Vince Beck

Rank: Advanced Member

Groups: Registered
Joined: 7/28/2019(UTC)
Posts: 351
United States
Location: Santa Rosa

Thanks: 1 times
Was thanked: 53 time(s) in 51 post(s)
That's very odd, a friend of mine uses 2 of them with not issue, I wonder if they are slightly different models after all.
Back to top
WWW
AlanZ  
#6 Posted : Tuesday, April 13, 2021 10:16:25 PM(UTC)
AlanZ

Rank: Advanced Member

Groups: Registered
Joined: 7/11/2015(UTC)
Posts: 354
Location: NJ

Thanks: 9 times
Was thanked: 45 time(s) in 38 post(s)
I have had no problem using two Brio cameras on Windows machines.

I am using the Brio MF in the vMix camera selection list.
The MF eliminates the lag in 4K, although it incurs significant cpu usage (12 to 18% per camera because it uses the windows host camera controller)

The cameras are plugged into different usb channels on the machine.

The other thing to note about the MF implementation is that you can’t launch/adjust camera properties (autofocus, exposure, etc.) from within vMix. I usually load Logitech Capture first, make the settings, close that app then load vMix. The two apps can run concurrently but I have seen some stability issues when run together.
Back to top
Cswa  
#7 Posted : Wednesday, April 14, 2021 8:13:05 AM(UTC)
Cswa

Rank: Member

Groups: Registered
Joined: 3/15/2021(UTC)
Posts: 15
United States
Location: Brooklyn
I have noticed this "Logitech BRIO 1 MF" option on my machine, but I never knew what it was. What does the "MF" stand for? The problem I have is that this option always gives me a "Blank Black Screen." How do you use it?
Back to top
AlanZ  
#8 Posted : Wednesday, April 14, 2021 11:42:47 AM(UTC)
AlanZ

Rank: Advanced Member

Groups: Registered
Joined: 7/11/2015(UTC)
Posts: 354
Location: NJ

Thanks: 9 times
Was thanked: 45 time(s) in 38 post(s)
If I recall correctly the MF refers to the Microsoft Media Framework.

The regular Brio choice uses DirectShow, which introduces quite a bit of lag in 4K.

Assuming that no other program is using your Brio cameras, the first will be called Brio MF, and the second will be Brio 1 MF

You need only set the resolution and frame rate. You can use the default format (I think it comes in as NV12).

As mentioned, you need to use an external program like .Logitech Capture to set things like angle of view, manual focus, etc.
Back to top
Users browsing this topic
Guest
Forum Jump  
You cannot post new topics in this forum.
You cannot reply to topics in this forum.
You cannot delete your posts in this forum.
You cannot edit your posts in this forum.
You cannot create polls in this forum.
You cannot vote in polls in this forum.

Privacy Policy | Powered by YAF.NET | YAF.NET © 2003-2024, Yet Another Forum.NET
This page was generated in 0.132 seconds.