The 2012 London Olympics actually brought home to me just what a huge technological leap in digital media has occurred throughout the past couple of years. There’s been significant progress in digital compression and transmission.
This year, along with high definition broadcast that made its appearance from the 2008 Beijing games, 3D tv has been also added to the lineup, offering more channels and choices. Together with analogue television broadcast virtually becoming extinct, digital televisions promise of providing more for less is becoming a reality. Now, how can we arrive at this stage and what will the future hold for digital multimedia?
Before the digital switchover, mag iptv was source hungry concerning the amount of bandwidth necessary to carry one station. This is typically between 6 – 8 MHz based on the sort of video standard being used. This restricted the amount of stations that might be transmitted, because there’s a limited amount of spectrum that has to be shared with other services like mobile, radio and 2 way communications.
Exactly what the digital criteria of ATSC (North America) and DVB (Rest of the World) supplied has been the ability to reuse the present analogue spectrum more effectively. This meant a normal 8 MHz carrier used for analogue broadcast can be converted into DVB-T (Digital Video – Terrestrial) which makes it feasible to carry 9 standard definition channels or 3 HD channels and one SD station for exactly the identical amount of bandwidth.
It might have needed in excess of 70 MHz of frequency spectrum to accomplish this together with the older analogue standard. Besides squeezing more channels into less space, mag iptv is a lot clearer and does not have problems with ghosting or other artifacts that troubled analogue systems. Becoming digital additionally enables other features like improved digital audio, digital program guide and subtitle service to be contained.