Michael I think has a rather close concept with it. You can get an rpii with a poe hat and with a couple of packages you have a network controlled sound or video device. With all sorts of options. 

On Fri, Nov 5, 2021, 8:57 PM Michael Butash via PLUG-discuss <plug-discuss@lists.phxlinux.org> wrote:
I think what you want is essentially a usb hub to network to usb hub in the middle, or some middleware.  Not sure this exists out of box.

Doing some quick googling, as I know usb-to-network protocols exist, seems there are a few options.  This shows a company selling software to do this, or also the open-source way (and why they are better).  Admittedly kinda cool actually.

https://www.flexihub.com/usb-over-ip-raspberry-pi/

Basically use a cheap rpi as an endpoint, and a server software to make the rpi's usb ports and connected device look elsewhere on a client workstation/server.  You'd then have a workstation/server that would connect to that rpi as a usb server of sorts, and make a virtual usb port look local to your OS.  As I said before, Belkin made something like this, but was crap software and like a 100 bucks for the usb remote "hub".

So say you had a usb camera you wanted to "extend", you'd hook the camera to the rpi, rpi to network, computer to network, and configure computer software to connect to rpi for "virtual" usb ports on it.  Your computer would then see the camera over a virtual usb port as though usb direct to computer.  This could be for a remote mouse, a usb to hdmi video device, etc.

I have seen rather dumb usb ''extenders" that are usb in, ethernet out, and you connect a few back to back, but these typically aren't "ethernet" protocol, rather just using the cat5/6 for copper and some other protocol over it, so no switch between, no multi-point, etc.  Lots of AV gear like this for extension, but not all is "normal" ethernet.  The rpi method might be good as it gets.

My suggestion is if cameras are of importance, to move to a real ip camera that takes poe, and save the middle-man devices, which is what 99% of businesses have or are moving to.  If other usb devices trying to extend, try the rpi methods, as you could even put a poe hat on it then, and any other number of modules besides that.

-mb


On Fri, Nov 5, 2021 at 4:07 PM David Schwartz via PLUG-discuss <plug-discuss@lists.phxlinux.org> wrote:
Thanks, but this is not what I’m looking for.

“A/V over ethernet” not an “HDMI extender”.

Dante from Audinate makes stuff that does this, but it’s proprietary and rather expensive.


I’m looking for a more generic solution, if one exists.

A lot of security systems offer them with WiFi cameras, and some use ethernet cables instead of coax.

-David Schwartz

On Nov 5, 2021, at 2:19 PM, Stephen Partington via PLUG-discuss <plug-discuss@lists.phxlinux.org> wrote:

Here is a quick example of it. This is full hdmi. 

Cable Matters Wall Mount HDMI Extender (HDMI Over Ethernet Cable) with TCP/IP Support for 1-to-Many Setup - Up to 300 Feet https://www.amazon.com/dp/B00OZV04BK/ref=cm_sw_r_awdo_navT_g_NCNDZY6Y7ASZQMAPFVKX

On Fri, Nov 5, 2021, 5:16 PM Stephen Partington <cryptworks@gmail.com> wrote:
This exists. I have used it before. You looking to send what kind of signal?1080p or more? 

On Sun, Oct 31, 2021, 6:12 AM David Schwartz via PLUG-discuss <plug-discuss@lists.phxlinux.org> wrote:
I’m shooting in the dark here wondering how to solve this. Looking for ideas.

Think about multi-port USB hubs for laptops with only a few USB ports . . .

A guy I’ve been talking with said he's looking for something like that but plugs into the ethernet, not USB, and uses PoE for power.

It’s basically a break-out box that uses wired ethernet to send data to some remote spots about 100 M away through a 1GB switch.

His requirements include: audio (mic, headphone), USB video in, USB video out, some digital I/Os to turn lights on and off, a couple of spare USB ports

The video is streaming 4k, probably H.264; he has the camera and a display device, and both work via USB. (There’s a reason he has chosen USB!)

I don’t know if there are simple chips in these sorts of USB “splitters” or if they have a CPU like what’s in a Raspberry Pi.

Is this something that an R-Pi can be made to support with some HATs?

In my mind, it should be fairly simple. It’s mostly just acting like a router, right?

A separate audio stream on the ethernet could go to a USB port with a common “USB Sound Card” where the mic and headphone can be connected.

It’s just “audio over ethernet” and “video over ethernet”, no?

What does that take? Is there hardware that already does it?


(Dante has a small A/V board to embed in equipment, but you need one on each end of a one-way circuit, meaning 4x per connection, and he needs up to 8 of these channels.)

-David Schwartz





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