Progress does not stand still.

Thanks to Chinese and other manufacturers from the East, IT technologies are improving, and often changing almost every year.
A little time has passed since the USB 3.0 standard appeared, now USB 3.1 is being actively implemented. Of course, this is often done to encourage new products to appear, encourage users to upgrade their equipment to newer, more technologically advanced ones, and ensure that Chinese-made gadgets aren't wasted.

The same thing is happening in the home audio-video segment. Everyone will agree with me that we have a lot of gadgets at home that are often impossible to connect to each other. This is because there are many different standards, codecs, interfaces, and connectors for transmitting video and audio.
For example, you have an old TV with SCART and RCA input/output jacks. Later, you bought a projector with VGA and RCA inputs, to which you connected a computer. Then you got a Full HD TV with HDMI inputs and a DVB-T tuner. Then a media player with HDMI, an HTPC with HDMI v1.4 and Ultra HD 4K support. Now you have a small gadget park. And the thought occurs to you: could all this be scattered across different rooms and controlled centrally from one place?

I'll answer - yes. Thanks to new microprocessor devices like the AV Matrix, you can have multiple audio/video signal sources and multiple consumers of that same signal. The matrix's job is then to connect them as desired. Moreover, they can often be separated by distances of up to 100 meters, making these technologies suitable for use in advertising and entertainment venues. You can switch and control the matrix either with a remote control or via a computer.

Depending on your needs, you can choose 4x2, 4x4, 4x8, 8x8 and larger matrices. 
It is also now easy to connect different interfaces together, convert a signal from digital to analog and vice versa, for example, VGA HDMI, HDMI VGA, HDMI AV AV HDMI. You can also decode compressed audio and video signals, scale (digitize) analog, convert HD to UHD and vice versa.

At the same time, the cost of these intermediate microprocessor devices is not that high and ranges from $10 and up. This will be orders of magnitude cheaper than buying new, more integrated devices, allowing you to use the savings to buy many more electronic gadgets.

Connect your gadgets and enjoy your new purchases!