Abstract: A code rate control method and apparatus, an image acquisition device, and a readable storage medium are provided. The method includes: acquiring the gain and exposure time of an image to be encoded from an image processing module of an image acquisition device; obtaining corresponding reference distortion degree according to the gain and exposure time of said image; calculating the difference between the distortion degree in a characteristic region of said image and the reference distortion degree; calculating a distortion tolerance degree of macro blocks constituting said image according to the difference between the distortion degree in the characteristic region of said image and the reference distortion degree; performing macro block predictions on the respective macro blocks in said image, to obtain an optimum macro block prediction mode; and encoding said image, which corresponds to the optimum macro block prediction mode.

Abstract: The embodiments of the present disclosure provide a code rate control method and apparatus, an image acquisition device, and a readable storage medium.

Abstract: The present application discloses a video scrambling method and device with adaptive mode selection, a network camera and a readable storage medium, which are used for scrambling a video code stream. The video scrambling method with adaptive mode selection comprises: firstly acquiring a video code stream and determining the frame type of a current frame; and then scrambling, according to the frame type of the current frame, the data subjected to entropy decoding by using a scrambling method corresponding to the frame type. The video scrambling device with adaptive mode selection in the present application comprises a determination module and a scrambling module. According to the method and device of the present application, I-frames and P-frames are respectively scrambled, without changing the original coding standard format, effectively scrambling the video contents, and improving the security of video content information.

Abstract: The present application discloses a video scrambling method and device with adaptive mode selection, a network camera and a readable storage medium, which are used for scrambling a video code stream. The video scrambling method with adaptive mode selection comprises: firstly acquiring a video code stream and determining the frame type of a current frame; and then scrambling, according to the frame type of the current frame, the data subjected to entropy decoding by using a scrambling method corresponding to the frame type. The video scrambling device with adaptive mode selection in the present application comprises a determination module and a scrambling module. According to the method and device of the present application, I-frames and P-frames are respectively scrambled, without changing the original coding standard format, effectively scrambling the video contents, and improving the security of video content information.