Surveillance and Conference Cameras

• Full HD vs. 4K: Advantages for surveillance and conference cameras?
• What are the differences between HD-TVI, AHD, and HD-CVI systems?
• What are WDR, OSD, HLC, 3D-DNR, Sens-Up, BLC, DIS, LSC, FLK, ATW in relation to surveillance cameras?
• What is CVBS output in surveillance cameras?
• What is the best type of surveillance system, CCTV or IP?