tool or mobile app (like "CCTV Super Password") to generate a one-time code for that specific date. 2. The Hard Reset (Hardware Hack)

Most H.264 DVRs from common brands (e.g., Hikvision, Dahua, Zmodo, Annke, Q-See) ship with default credentials:

Many H.264 DVRs have a small, recessed button inside the case or on the back panel.