Design of the High-Efficiency Video Data Capture Mechanism on Blackfin DSP

The capture of video data is the crucial task in real-time video coding system,and the capture mechanism determines the performance of system.After research of the real-time capture,coding and transmission device,we put forward a parallel processing method.In addition,we designed a practical and high-efficiency capture mechanism according to the characteristics of Blackfin media DSP.As a result,the mechanism has been utilized in the real-time H.263 and MPEG-4 video coding system based on Blackfin 533 and H.264 coding system based on Blackfin 561.