Aiming at problem of large storage space occupied by high transmission code rate of uncompressed video image signal

a video compression coding system based on MPEG-2 is proposed

realize wireless transmission of digital images

and output transport stream. By video decoder chip SAA7114 H and encoding chip SAA6752 H constitute compression module

analyze original video image

video is captured and compressed by D1 format

respectively

video image quality changes while being transmitting

at different transmission rates

indicating that the higher the compression ratio is

the worse the image quality is; collect data by pins of SAA6752 chip

the captured video stream data is converted to hexadecimal

analyze data structure and arrangement law with the transport stream characteristics. The design method can not only ensure good image quality

increase video compression ratios

but also can extract transport stream correctly.