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As it is difficult for the traditional video processing systems to solve the contradiction problems among small size, low power, large data bandwidth and high processing speed, and in order to meet the small-integrated requirements of development in the fields of intelligent weapon equipments and industrial automation productions, a kind of small-integrated video acquisition and processing platform system based on SoC is constructed. Through taking advantages of the software programmable based Arm and the hard programmable based FPGA, a video preprocessing method using Vivado HLS video libraries is proposed to quickly package IP cores based on which the hardware accelerated algorithms are achieved in FPGA. The platform system not only meets the real-time requirements of video acquisition and processing but also achieves the designs of small-integrated and low power. The hardware and software of system are designed and the composition principles of system are introduced. The contrast analysis of system functions and performances are finished based the example of Sobel algorithm. The effectiveness of system is validated.