The difference between 1080p and 1080i

[Kevin Lancaster]

The difference between 1080p and 1080i

Display specifications can be complicated, considering there are multiple factors to consider – like resolution, refresh rates, contrast ratio, aspect ratio, display size, and HDR capabilities.

When looking at TVs and the source signals they receive, a point of contention is the difference between 1080p and 1080i, and what it means for the average TV owner.

 

[konfab]

Display specifications can be complicated, considering there are multiple factors to consider – like resolution, refresh rates, contrast ratio, aspect ratio, display size, and HDR capabilities.

Good thing such things are discussed in the article...

 

[Jola]

Yip !

I like 1080p60, or, even better, 4k progressive. My Samsung SmartTV lets me watch the latter on selected Netflix shows. Very cool.

Before anyone asks, my FTTH is 100/100, and can usually handle 4k (not always).

 

[saor]

Below is a simple explanation

Cool I can send this to my gran!

A single frame of interlaced 1080i video consists of two sequential 1920 x 540 images, with the first field consisting of all odd-numbered vertical pixel lines and the second all even-numbered pixel lines.

Both these half-images together create a frame every 30th of a second.

This means if a second of 1080i video consists of 30 “1,920 x 1,080” frames, it includes 60 “1,920 x 540 fields”.

An important note is that when the source video is 1080i/60, there are in fact no full images – as each of the 60 interlaced fields occupy a different point in time and 30 interlaced frames are displayed per second.

Maybe not. I don't really mind the explanation, but it's not really simplified - it reads like a snippet of the technical manual. Some more pictures and graphics would've been nice, as well as a concluding suggestion to tie it up.

 

[Kevin Lancaster]

Cool I can send this to my gran!

Maybe not. I don't really mind the explanation, but it's not really simplified - it reads like a snippet of the technical manual. Some more pictures and graphics would've been nice, as well as a concluding suggestion to tie it up.

From the article:

Below is a simple explanation of what the differences are...

Due to the fidelity and fully-displayed frames, a 1080p video delivers a sharper and more refined image which can provide better quality during scenes with lots of motion.

Interlaced video suffers in scenes with lots of motion, as it only displays half an image at a single point in time. This makes it difficult to display fast movement.

Compared to progressive scan, interlaced video has more jagged edges and motion artifacts.

Visual quality of 1080i video can also depend on your TV, as some video processors are better at deinterlacing video than others.

 

[Johnatan56]

From the article:

Below is a simple explanation of what the differences are...

Due to the fidelity and fully-displayed frames, a 1080p video delivers a sharper and more refined image which can provide better quality during scenes with lots of motion.

Interlaced video suffers in scenes with lots of motion, as it only displays half an image at a single point in time. This makes it difficult to display fast movement.

Compared to progressive scan, interlaced video has more jagged edges and motion artifacts.

Visual quality of 1080i video can also depend on your TV, as some video processors are better at deinterlacing video than others.

I feel that this article requires more images since you're talking about a visual topic.
E.g. show an example of the image changing slowly as a Gify with it being two drastically different images for both 1080p and 1080i. (Yes, you can scale down the resolution of the image).

 

[saor]

From the article:

Below is a simple explanation of what the differences are...//

Forwards to gran.

Thx, I still feel more pics, vids & a conclusion would be nice, just something like: "If you're buying a new tv and only watch blurays, then xyz". If you're going to show me the red & blue pill - you're allowed to make a suggestion .

 

[RyanPCMR]

Thanks for this extra info that will assist people to make informed choices in front of unscrupulous sales people who's willing to give wrong product information for their little piece of "commission" by placing their little stickers on the product already. Here's thinking of you, Makro!

 

[Thor]

DSTV's excuse is laughable. Shouldn’t charge your clients 1080p prices then scumsters.

 

[Dolby]

Before anyone asks, my FTTH is 100/100, and can usually handle 4k (not always).

Not always on that speed?
Surely something is wrong?

 

[Jola]

Not always on that speed?
Surely something is wrong?

Fibrehoods/Vox, doesn't always perform as it should, even though the speedtests are good.

 

[Dolby]

Wow that's not cool at all.

On 20mb VDSL I've just managed to stream a 4K stereo video from YouTube. If I do get buffer, it isn't severe

 

[bokka1]

I have the new Explora 2 and within the settings I have a choice for 1080P output. Does this mean the decoder outputs at that resolution or does it upscale.

Should I just stick to 1080i?