4K resolution, sometimes called 4K Ultra HD, refers to video with a horizontal resolution of 4,000 pixels and a vertical resolution of 2,000 pixels. 4K Ultra HD Cable & Satellite TV is currently the cutting edge of technology available within the television industry. While 4K is still considered to be a premium feature, more and more television manufacturers are creating 4K sets and eventually, 4K will become as common as standard high definition is today. It's important to note, however, that simply buying a 4K capable TV set will not automatically upgrade the quality of the picture when compared to standard high definition. The content itself needs to be broadcast in a 4K format in order for the TV set to take advantage. Here are some common questions about 4K Ultra HD.