MPEG2 Extension data

while(nextbits() == extension_start_code) {

extension_start_code

if(i==0) {/* follows sequence_extension()*/

if(nextbits() == "Sequence Display Extension ID")

}

/*Note: extension never follows a group_of_pictures_header()*/

if(i==2) { /*follows picture_coding_extension()*/

if (nexbits() == "Quant Matrix Extension ID")

else if(nextbits() == Picture Display Extension ID")

else if(nextbits() == Picture Spatial Scalable Extension ID")

}

}
}

MPEG2 Extension_Data