12VDC 2A should be more than enough
The look of it can be different, but this is what you need. It can look like a classic adapter/ small metal box, a small chip. Whatever suit your need
Oh sorry, i forgot you mentioned 4 channels.
I'd go with ids-7608nxi-m2/x. Good bandwidth, good decoding capability and a extra spots for expanding current surveillance
If you have acusense camera acusense NVR is not needed. As camera have algorithm for detection on itself and it will pass an event detection toward NVR. So NVR wont do any analytics but camera itself and just notify the NVR.
M serie is best hardwarewise. Gives more bandwidth, decoding...
Well, unfortunately no. The documentation is available to those who register and sign NDA at tpp.hikvision.com.
I can share stuff which is already publicly available to help others who don't know how google work :) . But cant provide something which isn't.
First listener run will fetch all the past events there are on device. And device will mark them as sent, once u get to present, it will only send realtime data.
There you go an example:
using System;
using System.IO;
using System.Net;
using System.Text;
using System.Threading.Tasks;
class Program
{
static async Task Main(string[] args)
{
string url = "http://192.168.2.107:5656/events/";
HttpListener listener = new...
Http listener is best option for real time thats what i use, the crud what i shown you in my project is being used for syncing. For example if HA was off, then on first start will sync events and co tinue off with listener.