What are the screen resolutions for hdtv, edtv, etc?
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YOyoYOhowsDAjello
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SD 480i = like 640x480 but interlaced
ED 480p = like 854x480
HD 720p = like 1280x720
HD 1080i = like 1920x1080 but interlaced
HD 1080p = like 1920x1080
ED 480p = like 854x480
HD 720p = like 1280x720
HD 1080i = like 1920x1080 but interlaced
HD 1080p = like 1920x1080
quakefiend420
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YOyoYOhowsDAjello
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quakefiend420
Lifer
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Exactly correct. Only thing I'd add is info on perhaps the most misunderstood part, DVD resolution.
People often say DVD fits perfectly into ED. DVD is natively 720 x 480, but in a non-square, 16:9 format. So, when you display it on a square pixel fixed pixel display, you need at least 854 pixels in width to fully resolve it.
480 * 16 / 9 = 853.3
To say DVD fits exactly into ED without scaling isn't totally accurate.
YOyoYOhowsDAjello
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Plus if it's not a 1.85:1 DVD it's not going to fill up the whole screen either = not using full 480p res, right?
(Or am I confused yet again?
)So on a 2.35:1 DVD, the 480p is just the image portion and not including the black bars, right? (So even vertically it's being scaled?)
The other big thing I've come across about DVDs is that many people think they're a progressive source when they're actually interlaced.
EDIT:
I read over my 2.35:1 question and I don't know if it made sense.
So When I play a DVD that's 2.35:1, my EDTV is only displaying the image on an area of the screen that's
854x363
So, on a 2.35:1 DVD, is the "picture" part of it still 480 lines of info or is the whole thing including the bars 480 lines of info?
If it includes the bars, then the vertical res is still fitting great, but if the image is 480 itself, then it's being scaled from 480 lines to 363 lines.
BrokenVisage
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YOyoYOhowsDAjello
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Ok, drawing some rectangles and doing some fractions...
Looks like a 576p TV would display a 2.35:1 image in an area of its screen that's 1024x480.
I was wondering how 576p fit into the picture.
So, with a 480p display a DVD will fit just about right into the "854" res and a 1.85:1 image will fit just about right natively into the display (since I think that's about as close as 1.78:1 that DVDs get that's a common aspect ratio). A 2.35:1 image will again fit right into the "854" res, but vertically the 480 image will be displayed in an area 363 lines high.
With a 576p display, a DVD is scaled to fit the "1024" res horizontally, but vertically a 2.35:1 image will take up 480 lines and wont need to be scaled vertically. For a 1.85:1 source it will be scaled vertically and horizontally.
Does this sound right?
Looks like a 576p TV would display a 2.35:1 image in an area of its screen that's 1024x480.
I was wondering how 576p fit into the picture.
So, with a 480p display a DVD will fit just about right into the "854" res and a 1.85:1 image will fit just about right natively into the display (since I think that's about as close as 1.78:1 that DVDs get that's a common aspect ratio). A 2.35:1 image will again fit right into the "854" res, but vertically the 480 image will be displayed in an area 363 lines high.
With a 576p display, a DVD is scaled to fit the "1024" res horizontally, but vertically a 2.35:1 image will take up 480 lines and wont need to be scaled vertically. For a 1.85:1 source it will be scaled vertically and horizontally.
Does this sound right?
Whoozyerdaddy
Lifer
- Jun 27, 2005
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Originally posted by: YOyoYOhowsDAjello
Plus if it's not a 1.85:1 DVD it's not going to fill up the whole screen either = not using full 480p res, right?
(Or am I confused yet again?
So on a 2.35:1 DVD, the 480p is just the image portion and not including the black bars, right? (So even vertically it's being scaled?)
The other big thing I've come across about DVDs is that many people think they're a progressive source when they're actually interlaced.
EDIT:
I read over my 2.35:1 question and I don't know if it made sense.
So When I play a DVD that's 2.35:1, my EDTV is only displaying the image on an area of the screen that's
854x363
So, on a 2.35:1 DVD, is the "picture" part of it still 480 lines of info or is the whole thing including the bars 480 lines of info?
If it includes the bars, then the vertical res is still fitting great, but if the image is 480 itself, then it's being scaled from 480 lines to 363 lines.
The whole thing including the bars is 480 lines. The black bars are part of the 480 line display.
YOyoYOhowsDAjello
Moderator<br>A/V & Home Theater<br>Elite member
- Aug 6, 2001
- 31,204
- 45
- 91
Originally posted by: Whoozyerdaddy
Originally posted by: YOyoYOhowsDAjello
Plus if it's not a 1.85:1 DVD it's not going to fill up the whole screen either = not using full 480p res, right?
(Or am I confused yet again?
So on a 2.35:1 DVD, the 480p is just the image portion and not including the black bars, right? (So even vertically it's being scaled?)
The other big thing I've come across about DVDs is that many people think they're a progressive source when they're actually interlaced.
EDIT:
I read over my 2.35:1 question and I don't know if it made sense.
So When I play a DVD that's 2.35:1, my EDTV is only displaying the image on an area of the screen that's
854x363
So, on a 2.35:1 DVD, is the "picture" part of it still 480 lines of info or is the whole thing including the bars 480 lines of info?
If it includes the bars, then the vertical res is still fitting great, but if the image is 480 itself, then it's being scaled from 480 lines to 363 lines.
The whole thing including the bars is 480 lines. The black bars are part of the 480 line display.
Thanks :thumbsup:
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