I have confirmed and shared the new TR-2516 constraints.

Issue: Provision AHD, Hik TVI 4MP/5MP camera shown only 1280×1440 when connected to TR-2516.
– Maximum resolution possible when the same camera is connected to the TR-1508.

The issue is limited to 4M Half/5M Half mode due to TR-2516 chipset performance limit.
TR-150x/TR-2504/TR-2508/TR-45xx have no chipset performance limitations.
Example)
4M30 : (Recognized as 4M Half) 1280×1440 15ips
4M15 : 2560×1440 7ips
5M20 : (recognized as 5M Half) 1280×1920 10ips
5M12 : 2560×1920 7ips

If IPS is set lower in AHD, TVI camera settings, TR-2516 will enable resolution rather than half mode.

Third-party AHD (Provision) and TVI (Hik) cameras found on Onsite do not have 4M15ips and 5M12ips options.
In this case, TR-2516 does not enable maximum camera resolution.
– 5M 12.5ips is supported for IDIS TVI 5M models, so maximum resolution is available.

Other models, TR-15xx, TR-2504/2508, and TR-4508/4516, do not have this constraint, so this is not a problem.