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Hello, this is my camera: bought on Amazon: Model: DS-2CD2042WD-I Firmware: 5.4.1 build 160525 The problem is easy: every some seconds the video become fully black and after come normal again with a DISSOLVENCE effect that go from black to the normal video ( like in a movies) and it repeats...

Hello Everyone, i wanna buy an NVR with following features: - perfect compatibility with onvif protocol - ablke to be connected to china cameras that support onvif protocol - motion detection registration - good mobile app - complete support for all browsers Is not a question of money, i...