Need to replace green screen background using a web cam for live streaming

curiouswebster
curiouswebster used Ask the Experts™
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Need to replace green screen background using a web cam for live streaming

I use WebinarJam and need a web cam, and have been directed to get a Logitech 922 or 930 (by EE and WebinarJam).

A primary use of this camera will be of me in front of a green screen, for live streaming. But I am not yet sure if WebinarJam handles the green screen replacement or if that is the job of the camera itself.

Here is a camera which does the green screen replacement...

https://www.amazon.com/Logitech-C922x-Pro-Stream-Webcam/dp/B01LXCDPPK/ref=sr_1_2?s=electronics&ie=UTF8&qid=1535043289&sr=1-2&keywords=Logitech+922

I have a Mac, BUT, I could load Windows for this Personify green screen replacement technology to be compatible with my system.

My only experience with green screen replacement is with a video, using Premiere Pro. I have not does this live but have heard there are problems involving automatic green screen replacement, when the subject is moving, or when details, like fingers, get truncated.

Please provide some feedback on whether this green screen replacement works well with this camera? Is it possible that WebinarJam has a setting which does the green screen replacement.for me?

Thanks.
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Fractional CTO
Distinguished Expert 2018
Commented:
Seriously interesting question.

I'm going to have to figure this out. Be great fun to cut between different backgrounds during live streaming.

The search - live streaming green screen mac - turned up 20+ million results, so likely a good starting point.

Also... likely all the solutions use ffmpeg behind the curtains.

The search - live streaming green screen ffmpeg - turns up fewer results + if you look at how to merge multiple video streams, including mixing/overlaying content into chroma key streams will net you the dirty details of how to do this.

Tip: Use https://macports.org to install latest ffmpeg code.
curiouswebsterSoftware Engineer

Author

Commented:
David, thank you for you prompt response. I decided to go with the Logitech 922x with Windows 7 support for green screen instant integration with the stream.

Thanks.
curiouswebsterSoftware Engineer

Author

Commented:
thanks
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Top Expert 2016

Commented:
You really should have researched your choice of software.  
Mixed reviews https://www.capterra.com/p/165878/Webinar-Jam/
What I don't like is the no try before buy, or sample setup video's or documentation available until you pay.. they also market add ons for roughly the same price.

One thing that I got from the reviews was their dependence upon google/facebook and that they don't have multiple inputs i.e. talking head over presentation. this also implies to me that they don't support chromakeying

Open broadcaster would have been a better software solution. , Whether or not you can get WebinarJam can accept the input from OBS's output I have no idea and I'm not about to test @ $500 for a possible test/refund

next item is, do you have mixing software/hardware for audio?  Do you also have a studio quality microphone (i.e. Heil).  Do you also have a video capture board? so you can add additional video inputs?
David FavorFractional CTO
Distinguished Expert 2018

Commented:
I'd agree with David.

If you read people's comments about OBS vs. WJ, most people who've worked with both, say OBS is their choice.
curiouswebsterSoftware Engineer

Author

Commented:
Thanks for the suggestion for OB. I will check it out.

I do have a Shure microphone, which I love. I use Audacity to edit audio and Premiere Pro for video.

I have  a behringer U-Phoria UM2 for the microphone to USB.

I do not know what a video capture board is. What can that do for me?
Top Expert 2016

Commented:
video capture board is only needed if you want video from another source i.e. another computer, a video camera
curiouswebsterSoftware Engineer

Author

Commented:
I am in the process of installing a Logitech C922 for live video streaming. It uses a software called Personify to replace the green screen with an image, as part of the video stream, or so I am told. That software requires Windows, so I plan to host my webinars from Windows, which I run using Parallels.

I hope this setup will be usable and there are no technical hurdles I did not yet consider. A test is the only way to know.

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