Hi Ryu, just to clarify my comment. I’ll say that you should consider the best quality camera resolution, from a reliable manufacturer, using technology that meets your requirements, within the budget that you have for this project.
I’m not quite sure what your asking, but I’ll try a response.
Your saying wireless cameras are going to have problems even if they are the only thing transferring data over the network?
Yes, a Wifi wireless network will eventually reach its maximum capacity with enough cameras transmitting video data, as will a wired network. The difference is that usually a wired network will have much greater video surveillance bandwidth and is less susceptible to interference, and the disruption is causes, than a WiFi wireless network. This means that more vides cameras, with higher resolutions, can be supported on a wired network than a wireless network.
No wireless solution is going to be steady as it should be?
And yes again, a WiFi wireless solution can be “steady” or stable, within its limits, as long as there isn’t any other radio frequency interferance and the radio/access point can support the constant video data communication. Just as there are better quality video cameras, there are also better quality WiFi access points. Unfortunately, in urban areas where I live, the radio frequency spectrum is full of many many devices. And all of these devices “talking” or transmitting/receiving data cause interferance for neighboring devices. And all it takes is for one misconfigured or badly operating device to disrupt communication for all of the other devices in the area, including wireless video cameras. So, even the enterprise-grade WiFi network in my home can be negatively impacted by a neighbors device. And this happens sometimes, which is why I try to keep most of my network services on wired connections.
I use both wired and wireless video cameras, but my highest definition cameras are wired (POE) and my wireless cameras are only used where it isn’t convenient to run an ethernet cable. Both types of cameras, wired and wireless, have their place.
I tried to simplify my response not knowing your technical level. In the end, get the best technology that you can afford that meets your needs. And while Open Source is good, sometimes a closed-source solution will be the answer. Good luck with your surveillance project!