To solve the problem that video driver for C64X Digital Signal Processor (DSP) family can not be used in RAW capture mode, the authors designed a data interface between DM642 and the high definition sensor of Charge-Coupled Device (CCD), and analyzed and modified the video driver of standard format. After being optimized, the video driver could be used in RAW capture mode. Applications had been developed based on multilevel buffer management framework. At last, the capture speed achieves the minimum speed of 15 frame per second.