Question: 

How can I switch Hikvision TVI analog cameras to a different video mode (TVI, AHD, CVI or CVBS)?


Answer:

Many of Hikvision TVI cameras support different hi-def modes. These mode can be selected by pressing and holding the small button on the camera or its pigtail. 


The cameras come set at the factory in TVI mode. to switch between the modes press and hold the button down for 5 seconds. You will hear a slight click then the camera will boot up in the next mode. 


Here is the sequence for switching modes: TVI, AHD, CVI, and CVBS


If the camera is in CVBS mode. Pressing the button for 5 seconds will switch it back to TVI mode, which is factory default.