Securame

Quickddns/Dahuaddns is not down, it just does not allow any new devices to be added. You can still do so anyway, check this out: http://www.securamente.com/seguir-usando-los-servidores-ddns-dahua-dahuaddns-quickddns/

Depends on the model; on some higher end units you could show different channels on each output, but most of the low end units will not allow you to do that.

Google "HDMI extender over IP" (careful, it is NOT the same as "HDMI extender over UTP"; those might also serve you, but you will have a hrd time finding one that goes up to 100m)

You can not use a Hikvision device with DMSS, and you can not use a Dahua device with iVMS-4500. You will need to use a third party program to be able to watch them both from the same app.

Record for a while (even one minute, five minutes, whatever) just one single channel that is currently giving you problems on playback, while all the other channels do not record at all, and see if it playbacks fine. If you are recording 26ch CONTINUOUSLY you might have a bottleneck on your HD recording speed, if you are trying to write to it more data than it can handle.

It depends on your budget and what you are looking for. If 2MP CVI/TVI/AHD is enough for you, then this DVR is good enough, as long as you keep in mind you will not be able to update to cameras with higher resolution. I agree that DS-7208HQHI-F1/N/A is a unit that is being phased out and if it was for myself I would be looking at something better. And no matter what technology you use I would be using UTP wiring (if you go for CVI/TVI/AHD you can use baluns). If you can go for IP that would be great, but I do not know if it will fit your budget.

You sell Hikvision? Well, then you might as well use it a little bit, so you would know what you are selling. You could just go grab a DS-72xxHQHI-Fx unit, plug a 2MP CVI camera on any channel you like, and see it working. That would be amazing to see, since you are 1000% sure it does not support CVI. From the 3.4.80 Release notes (I will not bother looking for 3.4.70 or 3.4.75): Newly supports TVI/AHD/CVI/CVBS/IP for whatever series, for other Turbo HD 3.0 units it is already supported since 3.4.70 or 3.4.75. Now go and check out if the 72xxHQHI-Fx units belong to Turbo HD 3.0 (yes, they do). I just do not like feeding trolls, and sorry to the OP since all this has not much to do with his question.

Hikvision recorders have been "5in1" for a long time, and they have supported CVI for a long time. The fact that Hikvision does not care/want to advertise that fact on their web site, spec sheets, etc. (maybe since CVI is a competitors format) does not change that, I do not actually know their reasons. I know well the specs on that unit. It does 3MP on the first two channels; it can do 2MP on all 8 channels; and you can also add 2 extra IP cameras, making a total of 10 channels. Tom, if you do not know what you are talking about, you shouldn't do it (quoting you: "1000% it does not do cvi", when you have no clue). You do not use Hikvision products, feel free to bash them as much as you want, but do not expect to know how a product works better than someone that actually does use it . So I said it supported CVI since 3.4.80, on 72HQHI-Fx it actually came even sooner.

It supports CVI and it has done so since firmware v3.4.80, which is from around Dic/2016. It supports 3MP on the first two channels, and 2MP/1080p on the rest of the channels.

It does support CVI.

DS-7208HQHI-F1/N/A will work in the UK, and anywhere else. It supports TVI/CVI/AHD/analog, you are not stuck on one brand.

You would need DS-7208HQHI-F1/N/A (the A at the end means alarm inputs/outputs).

If you want to change the name, log in to www.hik-connect.com with your account, and there you can edit your device, and change the s/n to something else.

Hik-connect can be accessed remotely from a browser, just like hiddns. http://www.hik-connect.com/whatevernameyouuse You can keep using iVMS-4500 and iVMS-4200 with Hik-connect (I do not still use the Hik-connect app, I do not know how well/bad it works). And any device that was set up with HiDDNS still works, they have not shut down HiDDNS servers.

It is probably manufactured by Dahua since Config Tool recognises it. But that is not a Dahua model, so it might be a rebranded unit sold by someone else under their own name/brand. So you might have a hard time knowing what is the equivalent Dahua model for that unit to make sure you do not put the wrong firmware on it.

TI810X|0 is surely NOT a Dahua model name.

I think "Anonymous" login on Dahua devices must be for ONVIF and/or RTSP. It surely will not allow you to login the web interface without valid credentials.

Not a single snapshot you have posted shows anything about Windows or IE. You need to use Windows and Internet Explorer. NOT Edge. And you might need to tweak permissions for Activex controls, security zones, and/or compatibility views.

Edit the user, and add him permissions for live view and playback on ch18.

For web access you need to use Windows and Internet Explorer.

That should be fine. As an advice; test the cable to make sure it will work BEFORE wasting hours puting it in place.

26AWG is crap, do not go for anything less than 24AWG.

When you see the camera in 4 screen mode, it is showing you the substream. When you try to bring it to full screen, it tries to show you the main stream, and it is unsupported. Maybe the chinese NVR does not support 4MP; try to change the resolution to 2MP (1080p).

Use TFTP to upload the correct firmware.

If your cameras are NOT connected with POE on the NVR, yes you can do that. You can put on each TV a 4ch NVR just for decoding purposes, decoding just one camera and showing it full screen.