Wrap 3 Internet channels (2 of the same provider + 1 reserve) in 1 router and configure?

Question

network hardware

There are 3 Internet channels 2 providers "X" and 1 provider "Y"
You need to parallelize one channel from X and from Y - either so that two work simultaneously, or to reserve each other (if one drops out, the second is picked up)
2 channels from x in general to was separately under video surveillance in its subnet.
Actually the question is, is it possible to shove all three into one router or the first two into one and a separate router for video surveillance?
Video surveillance hangs on a separate scattered optics (60 cameras at 4mp)

Answer 1

Like this https://www.youtube.com/watch?v=Gwl-0bRxOY4

Answer 2

Yes, you can. There are plenty of articles on the internet on how to do this. For example, on Mikrotik. Reserve in a couple of clicks, balancing a little more

Answer 3

For "simultaneous" work with the summation of throughput:
there are both hardware and software solutions,
for example
https://www.openmptcprouter.com
there is an illustration on the first page - it makes it clear why the server is there
Here is one of the solutions
https://habr. com/ru/company/mailru/blog/332950/
Here is the free software for the solution
https://github.com/VrayoSystems/vtrunkd