AlanZ,

Interesting. I got a c920 webcam to work yesterday into vMix17 via NDI from a second computer. Only issue was it came in 4:3 rather that 16:9.

UPDATE: Maybe the 4:3 issue with the c920are in in my NDI settings in vMix17 settings? Not sure. Will play around with those.

Imported a c930e from a 2nd computer via vMix17 with NDI (16:9); no issues. The c930e works better over the network than I've ever seen it perform. Almost no delay at all.

~George

This particular notebook computer won't accept a NewTek Connect app, it says it needs a CPU with AVX instructions, and this notebook has a Pentium B960 processor.
What I find interesting is that the built in camera of this older notebook comes over NDI fine, but the C920 won't.
I also tried disabling the firewall and anti-virus... same results.
Odd, but hopefully there will be a resolution... that's what preview/testing is for!

For the webcams that aren't working, add them to vMix and check the format reported in the Resolution box in Input Settings.
NDI needs uncompressed video, so UYVY, YUY2, NV12 and RGB should all work, but MJPG or H264 will not.

I can confirm that the C920 doesn't support UYVY, YUY2, NV12 nor RGB.

I tried Newtek Connect on an I7 machine. I had to update the nvidia drivers .
The c920 shows up as a source in Connect, in 4x3 mode, both when using the Windows UVC driver or when using the Logitech driver
However the stream does not get sent across the network to client machines. The clients see a listing for the camera but it displays a black thumbnail and video stream. The audio appears to b streaming.

I will contact NewTek
I did check the firewall, and disabled it entirely for a test.
then again, as mentioned, other cameras are streaming fine, so my guess is that it is not firewall related.

Thanks again

Selected default, then VMix uses RGB24 for my C920... If I select another mode like YUY2 then Vmix tells me this is not supported!

I have made some progress.
First, there was an additional firewall issue that prevented clients from seeing the source machine's stream.

This is odd in that it didn't affect all cameras on the network, but I am very pleased to take it out of the equation.
Once past the firewall issues, I did a few tests.

I connected a C920 (using UVC driver) via NDI Connect on a desktop computer, and was able to see it as an NDI source in the Video viewer and in vmix on a laptop computer.
Then I tried a C910 (and older model) as an input on another laptop machine using vMix and was able to see it in 720p format as an input on another vMix machine. This was perfect.
I then tried a C920 on that same machine and it would not display until I changed the driver for to UVC. Unlike the older C910, it displayed in 4x3 format.

So this is substantial progess. I need to see how/if camera properties can be changed (autofocus, etc) when needed, but that's beyond the scope of this discussion.

Thanks everyone for your help so far.

OK, this was perplexing, but I think I have it figured out. Not all encoding methods are supported at all resolutions. In fact, only a few are supported at each resolution.

- At 640x480 it defaults to RGB24, but also works with I420 or MJPEG.

- At 1280x720 it defaults to YUY2, but also works with H264 or MJPEG.

- At 1920x1080 it defaults to YUY2 (at a reduced frame rate) but also works with H264 or MJPEG (at full frame rate.)

Since I typically use 720p30, everything I do is either YUY2 or MJPEG.

Further, there are many resolutions offered where the C920 will not work at all. For example, 720x480/486/576, 768x432/576, 854x480/486.

Michael

I'll have to try YUY2, H264 and MJPEG with the BCC950 via NDI.

Oops, I see a post where NDI needs uncompressed, so H264 and MJPEG are out.




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