SURVEILLANCE SYSTEMS AND METHODS

The present disclosure relates to surveillance systems and methods. The surveillance methods may include converting first digital multimedia data from a first initial format into a first target format and a second target format; obtaining first intelligent data based on the first digital multimedia data of the first target format; generating first analog multimedia data by performing mixing, encoding and digital-analog conversion on the first digital multimedia data of the second target format and the first intelligent data; and transmitting the first analog multimedia data via a coaxial cable.