The present invention relates to a kind of bit-rate controller (120), including a maximum bitrate inlay fixture (204) and light determine block (202) determine image intensity level capture scene. Maximum bitrate inlays fixture group low optical maximum bit rate when lighting level is confirmed as dim light Intermediate (intermediate) light maximum bit rate is set when lighting level is confirmed as intermediate (intermediate) light level Or, high optics maximum bit rate is arranged when lighting level is confirmed as high level. Low smooth maximum bit rate is lower than intermediate Maximum Bit Rate. The maximum bit rate of high brightness is lower than intermediate Maximum Bit Rate. It is encoded therefore, it is possible to obtain a large amount of bit.The 2017 of copyright KIPO submissions
