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Ludwig  
#1 Posted : Friday, January 8, 2021 8:52:01 PM(UTC)
Ludwig

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Joined: 1/6/2021(UTC)
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Germany
Location: Saxony

Maybe I missed something but is the max. resolution for vMix call limited to 1280x720?
I tried several Cams an Connections. Even inhouse no FullHD possible. Can´t find any answers in the manual...

Thanks Ludwig
Follo  
#2 Posted : Friday, January 8, 2021 9:48:11 PM(UTC)
Follo

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Originally Posted by: Ludwig Go to Quoted Post
Maybe I missed something but is the max. resolution for vMix call limited to 1280x720?
I tried several Cams an Connections. Even inhouse no FullHD possible. Can´t find any answers in the manual...

Thanks Ludwig


vMix call from Browser to vMix is limited to 720P30 you can only use
1080P if you do a vMix to vMix call.


That's because vMix Call uses WebRTC.

Originally Posted by: mjgraves Go to Quoted Post


Nope. Not strange at all. It helps to have some appreciation for the origins of WebRTC, the foundation of vMix Call.

WebRTC was developed to enable streaming audio & video in browsers. That was to eliminate the need for installed communication clients like Skype, Bria, etc.

The browser makes no presumption about the I/O devices available to it. Most laptops have a built-in webcam that's only capable of 720p30.

Until very recently, access to anything beyond 720p30 required the use of an external webcam that was UVC 1.5 compliant and the app had to be smart enough to set the webcam to send MJPEG or H264 encoded video.

This because the webcam was connected by a USB 2.0 interface. USB 2.0 can only deliver 720p30 unless the stream is in some way compressed.

A generic WebRTC app makes no presumption about the webcam, so it's limited to 720p30. To get beyond that requires a whole lot more effort in the WebRTC app. It has to test the camera for it's reported capabilities.

But the whole point of WebRTC was making handling media easier for web devs. So testing for advanced capabilities is left to the specialists.

It gets worse when USB 3.0 webcams started to show up in 2017. These can deliver 1080p30 uncompressed over USB 3.0, but could just as easily be connected via USB 2.0.

4K webcams, which are still few, add more complexity. Undelivered promise.

WebRTC is evolving and can deliver 4K streams, but literally no-one has implemented that in a commercial service as yet.

No-one makes dime on things like vMix Call, so don't expect niche applications to be a high priority for anyone. If you want tons of control, you can revert to the kind of processes that were used before vMix Call.

VMix Call was supposed to make things easier. And it succeeds in that regard very nicely.



Best regards
DaveT  
#3 Posted : Saturday, January 16, 2021 8:18:46 AM(UTC)
DaveT

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Originally Posted by: Follo Go to Quoted Post
Originally Posted by: Ludwig Go to Quoted Post
Maybe I missed something but is the max. resolution for vMix call limited to 1280x720?
I tried several Cams an Connections. Even inhouse no FullHD possible. Can´t find any answers in the manual...

Thanks Ludwig


vMix call from Browser to vMix is limited to 720P30 you can only use
1080P if you do a vMix to vMix call.


That's because vMix Call uses WebRTC.

Originally Posted by: mjgraves Go to Quoted Post


Nope. Not strange at all. It helps to have some appreciation for the origins of WebRTC, the foundation of vMix Call.

WebRTC was developed to enable streaming audio & video in browsers. That was to eliminate the need for installed communication clients like Skype, Bria, etc.

The browser makes no presumption about the I/O devices available to it. Most laptops have a built-in webcam that's only capable of 720p30.

Until very recently, access to anything beyond 720p30 required the use of an external webcam that was UVC 1.5 compliant and the app had to be smart enough to set the webcam to send MJPEG or H264 encoded video.

This because the webcam was connected by a USB 2.0 interface. USB 2.0 can only deliver 720p30 unless the stream is in some way compressed.

A generic WebRTC app makes no presumption about the webcam, so it's limited to 720p30. To get beyond that requires a whole lot more effort in the WebRTC app. It has to test the camera for it's reported capabilities.

But the whole point of WebRTC was making handling media easier for web devs. So testing for advanced capabilities is left to the specialists.

It gets worse when USB 3.0 webcams started to show up in 2017. These can deliver 1080p30 uncompressed over USB 3.0, but could just as easily be connected via USB 2.0.

4K webcams, which are still few, add more complexity. Undelivered promise.

WebRTC is evolving and can deliver 4K streams, but literally no-one has implemented that in a commercial service as yet.

No-one makes dime on things like vMix Call, so don't expect niche applications to be a high priority for anyone. If you want tons of control, you can revert to the kind of processes that were used before vMix Call.

VMix Call was supposed to make things easier. And it succeeds in that regard very nicely.



Best regards


I know the spec is 720p, but we absolutely do get up to 1080p via Browser to VMIX Call. At least VMIX reports it at 1080p. May even be 1080p60 (our cameras are Sony alpha series using a HDMI->USB UVC device.

I think it would be amazing if VMIX provided a stand-alone, optimized very easy to use VMIX Calling software (for Mac & PC!) that has any benefits that VMIX to VMIX calls provides. If there are any benefits, that is! Maybe something I need to test.I think having guests install the full VMIX software for calling in would be a bit much (also I'd say our guests are 50/50 Mac vs PC)!
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