3-cam streaming with laptop?

[toke lahti]

Hi,
I should gear up for simple cheap streaming set and was wondering when usb3-bus on a laptop becomes a bottleneck?
Anybody tested how 3 hdmi-usb-dongles work with together?
Anybody seen any reviews on this?

Do those dongles just output uncompressed 4:2:0 or what?

 

[Greg_E]

Most of the HDMI to USB are usb2 so they are compressed. After that, I have a cheap one sitting here that I need to test.

I do have 3 ptz cameras that are uncompressed 1080/60 over usb3... Those take a lot of power, but they look really good. Got them used for $40usd before the virus caused everyone to buy every used USB camera on the market. Biggest problem after the CPU needs is extending the usb3, I have some 10 meter cables with repeaters in them, and you can't get too much farther away.

Best bet going is Ethernet streaming cameras with the NDI protocol.

 

[puredrifting]

As someone who just bought their own, ATEM Mini Pro. You'll spend just as much or more getting a laptop setup for multi camera streaming and the ATEM is smaller, lighter, cheaper and easier to use,
plus is more reliable. You'll still probably want a laptop to stream with the ATEM Mini Pro. It's quite an impressive device but doesn't do everything. No headphone out for monitoring. You cannot freely locate a
PIP and it can't do a multi-source split or split compressed screen or side by side PIP boxes. But if you are doing basic three camera live streaming, it's great.

We are using Live Stream Pro and VMix Live and VMix Call for remotes. A lot of this stuff depends on what level of streaming you are working at. VMix is incredible but it's $5k to $8k to put together a hot
enough computer to use it at it's max (We streamed a 4K documentary in CinemaScope this past weekend with 8 remote cameras for the filmmaker Q&A. The remotes were from all over the U.S. and Europe.)
So that was a pretty high end need. But if you do simple, basic stuff, ATEM Mini Pro is pretty amazing. If you can find one to buy too.