The broadcast world is going digital, and the digital domain is expanding enormously for broadcasters. In the past, 'digital' meant taking video from analog tape, encoding it to MPEG-2 and then transmitting it. However, the entire broadcasting landscape is getting more complex with distribution via terrestrial, satellite, cable, 'podcasts', HD-DVD, internet and mobile; not just standard definition but also HD (High Definition) and many other resolutions to suit the new distribution media. Content is being re-purposed at these different resolutions and frame rates, using new codecs and at different bit-rates, with different system requirements for each.