Progressive vs. Interlace HD TV & 720 vs 1080 High Defention Explained
If you want to learn about HD, Learning the difference between interlace and progressive is important. Interlace video is what we’ve been watching for many decades and is the fundamental technology behind standard definition. Half of the resolution is virtual, which means it doesn’t exist. The way this functions is you split every frame into two fields. The first field is every other line of information. they do this so every even line is on the TV screen. Every odd line of resolution is black and not on the screen. The second field reverses that where ever even line is black & every odd line actually has all the data on the screen. When you bring together these 2 fields, you may get one frame. This means that in a few cases at certain periods of time you do not have access to full resolution. You get only 50% of the resolution on the screen. This flash is so quick that the brain just fills in the blanks.
It does something thats called interlace-artifacting. interlace-artifacting is something similar to seeing a football being thrown across your screen. The shows a visual “smear and smudge”, You also see horizontal tearing going through the ball, because 505 the data is virtual and the set cannot keep up. The naked eye does have the ability to see these changes. It also makes it really hard to put interlace content on a progressive screen. This is because the vast majority of the high definition monitors are progressive. All plasma monitors are progressive; LCD screens are progressive; Your DLP screens are progressive. Whats left? Just CLT monitors.
So what is progressive? Progressive HD video is where every single line of resolution is on the screen all the time. There is no virtual field, everything is a full frame. This means when you throw a football down the field. All of the info is there the whole time. There’s no weird smearing there’s no interlace-artifacting, none of this. So the image is pure and perfect every single time. Movie cinemas are mostly progressive. Progressive is the primary way to get all of your content on the screen at the same time.
720 and 1080 are on both sides of the H.D. coin. Interlace and progressive follow that, so 720p can be 720 progressive lines of resolution. In other words all of the data is there all of the time. 1080i would be 1080 virtual lines of resolution. This is 1/2 of 1080. Which means 540 genuine lines. Some people think that 1080i is better than 720p, but because of this virtual info its not. Quality wise 1080i at the bottom then 720p & then 1080p the best. 1080p equals to all the lines being there as opposed to just half.
HD DVD blue-ray, they could be 1080p. You can download 1080p on the internet, but, you cant make 1080p today. The most broadcast lines you can accomplish is 720p and 1080i. If you can choice, then my proposition to you would be 720p before to 1080i. Primarily if you possess a plasma monitor, a LCD monitor or a DLP monitor, this is because your display technology isn’t interlace its progressive.
There’s another crucial aspect to talk about and thats the “frame rate”. Learning the frame rate requires again understanding the difference between interlace and progressive. Interlace means two fields make 1 frame. So this means that the measure not by frames, but by fields. i.e. lets take 1080p & 1080i. You’ll sometimes notice that 1080i/60. That means 1,080 interlace lines at 60 frames per second. So interlacing gets you every time. It gets you on frame rate and on interlacing artifacting. 1080i/60 is actually only 1080/30 and it have a lot of additionol interlace garbage that goes along with it.
So lets go over the genuine HD spectrum again. The best is 1080p then the 2nd best is 720p and then 1080i. Some folks may say. “so whats the deal with 480p”? Though 480 is not High Definition. That’s considered enhanced defention. Every person has there own opinions about these High Defention technologies, but several can all agree that 1080p is the best as of today hands down.
So those are your HD formats. Hopefully you’ll now know which works better for your situation.
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