
Have you ever noticed how some TVs and other video devices often brag about their of support 1080p? I imagine that more than a few people see the 1080p logo on the TV’s box and think to themselves, “I’m not too sure about all this 1080p business, but whatever it is, I gotta have it!”
So what does 1080p mean? Anytime you see the numbers 480, 720, or 1080 in the context of video, it is referring to video resolution. And video resolution is basically a way of describing how much detail the video has. Not surprisingly, larger numbers mean more detail. The numbers themselves (480, 720, 1080) refer to the rows of pixels (often called lines of resolution) the video image has. Thus, a 1080p video has 1080 rows of pixels making up its image.

So what puts the “p” in 1080p? The “p” stands for progressive. Progressive video is video that plays one full frame at a time, just like film does. The alternative to progressive video is interlaced video. FYI: An interlaced video with a resolution of 1080 rows of pixels would be written as 1080i. For technical reasons, a lot of video is interlaced which means that it only displays half of its pixels at a time (for a deeper explanation go back to this post on 120Hz TVs, starting on the third paragraph). Progressive video looks better than interlaced video and is the hot new thing for TVs currently on the market.

1080p is a great big fat video signal. This is great for blu-ray and HD game consoles, but don’t expect to take advantage of the beauty of 1080p video when you’re watching broadcast TV.

Our television infrastructure was never designed to handle such a big fat video signal, so instead we broadcast a more slender version of HD-720p video and 1080i video.

720p, being a progressive video format, is not as large as it could be but it’s quite pleasing to the eye. Its rival, 1080i, is a larger video resolution, but only displays half of itself at a time–not ideal, but that’s the trade we must make for greater detail. Is this confusing? Yes it is!
I want to take a moment to apologize to the world for the mess that our broadcast engineers brought us. During the birth of HD video, the engineers couldn’t decide which HD video format was better, 720p or 1080i, so they ended up releasing both.
In the late 1990s, broadcast engineers got a wild hare to start creating a higher resolution video format. After looking at our current broadcast infrastructure, the engineers came up with a few options for how this higher resolution video could work. One option was to create a progressive video format that had 720 rows of pixels. The other was an interlaced video format that had 1080 rows of pixels. Two spirited camps formed, each was wildly enamored with their creation. Each camp was so stubborn and sure that theirs would be the victor that they both went ahead and sold video equipment to various networks supporting their formats.



Rivaling technologies usually have a winner and a loser. VHS beat BETA for the first home video consumer product. Blu-ray beat HD-DVD for the first HD home video product. Unfortunately, the contest between 720p and 1080i had no loser or winner, and because of this, we are left with some very complicated standards.














When DVD technology arrived in the late 90′s, there was a giant boost in the popularity of 











