DVRs—which refers to the video compression standard rather than a specific brand—regaining access typically involves trying common default credentials or performing a manual factory reset. Google Groups Common Default Passwords
super / Password: supersystem / Password: systemIntroduction
Most H.264 DVRs use admin as the default username. Try the following combinations for the password field: h.264 dvr login password
When default passwords fail, you can attempt several recovery methods depending on the specific firmware of the device: The Secret Question/Email Recovery: DVRs—which refers to the video compression standard rather
credentials. Once compromised, the DVR can be used to launch DDoS attacks or spy on the owner's premises. Username: super / Password: super Username: system /