Jaws707
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Blu Ray And HD Viewing Question

Tue Jan 20, 2009 3:46 pm

So recently I veiwed my 1st Blu Ray movie (Rambo.) My blu ray player is a PS3 and I have a 40 inch widescreen Samsung HDTV. My question is why do the black bars on top and bottom of the picture still appear? This was the case when I watched a regular dvd from a regular dvd player. When i watched regular dvd's in the PS3 it would upconvert the picture and there were no black bars. Also when I watch movies in high definition on cable they fill the entire screen, so I do not understand why blu ray does not fill the entire screen. The picture size my tv is usually set on is 16x9. Any ideas?
 
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moo
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RE: Blu Ray And HD Viewing Question

Tue Jan 20, 2009 3:53 pm



Quoting Jaws707 (Thread starter):
My question is why do the black bars on top and bottom of the picture still appear?



Quoting Jaws707 (Thread starter):
The picture size my tv is usually set on is 16x9.

The film probably doesn't have a 16:9 or 4:3 aspect ratio - hence the bars.
 
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OA260
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RE: Blu Ray And HD Viewing Question

Tue Jan 20, 2009 3:58 pm

I just bought a Sony Bravia 40'' 1080 Full HD and have noticed the same issue with regards bars. On my remote control there is a button with four arrows pointing outwards which allows you to manually change this to get full screen. Maybe your remote has something similar?

What do you think about the blueray?
 
Klaus
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RE: Blu Ray And HD Viewing Question

Tue Jan 20, 2009 4:08 pm

If the material has a different format than your screen, it is inevitable that you either have black bars or part of the picture cut off (or the picture distorted).

Would you rather lose parts of the picture?
 
whappeh
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RE: Blu Ray And HD Viewing Question

Tue Jan 20, 2009 4:09 pm

It depends on the movie. "A Clockwork Orange" has blackbars on the left and right, not the top and bottom.
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WildcatYXU
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RE: Blu Ray And HD Viewing Question

Tue Jan 20, 2009 4:13 pm

You guys are all correct. While the HDTV screen format is 16:9, many movies on DVD or BR are recorded in Cinema Scope format - 22:9. It means we'll have black stripes on the top and the bottom even on our HDTV's, however the picture we watch is not cropped in any way.
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OA260
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RE: Blu Ray And HD Viewing Question

Tue Jan 20, 2009 4:18 pm

http://tech.yahoo.com/gd/why-do-i-st...-get-black-bars-on-my-hdtv-/209187

Why Do I Still Get Black Bars On My HDTV?

Letterboxing (black or gray bars on the top and bottom of the TV screen) and pillarboxing (similar bars on the sides) serve an important function: They present the content in its correct aspect ratio--the way its creators intended it to be seen.

An aspect ratio expresses the difference between the width and the height of a rectangular frame or screen. Film and television technicians use different systems for noting aspect ratios. Therefore, the movie aspect ratio of 1.33x1 (meaning its width is one-and-a-third times its height) is identical to the television aspect ratio of 4x3.

Most TV shows, as well movies made before 1953, must be pillarboxed to display correctly on an HDTV.

That's the ratio of standard definition televisions, and thus the correct one for all older and some current TV shows. Only pillarboxing can present these shows correctly on an HDTV. Of course, anything shot for high-definition fills the HDTV's 16x9 aspect ratio just fine.
 
HOMER71
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RE: Blu Ray And HD Viewing Question

Tue Jan 20, 2009 4:34 pm

With a 16x9 HDTV, that gives you a screen ratio of 1.78:1. With a standard 4x3 TV, the ratio is 1.33:1. Movies are filmed in various screen ratios.

Alot of them are filmed in 1.85:1 which is close enough to a 16x9 screen that they can stretch it enough to fill the whole screen.

On the other hand, alot of movies are filmed in 2.35:1 (even 2.40:1) - it is an even wider screen, which will create black bars on the top and bottom on a 16x9 HDTV. You will lose alot of the viewing area (on the sides) if you have it cropped in order to fill the whole screen.

Here's a link to a blog that explains it better than me:

http://www.highdefinitionblog.com/Pages/DVDPictures.htm

Quoting Whappeh (Reply 4):
"A Clockwork Orange" has blackbars on the left and right, not the top and bottom.

That's because Stanley Kubrick decided to film the movie in same ratio as a standard TV screen (4x3)

Personally, I don't mind the black bars as long as I am viewing the movie in its true apect ratio.
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Delboy
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RE: Blu Ray And HD Viewing Question

Tue Jan 20, 2009 5:10 pm

Got a 40" Toshiba 1080P and a PS3 and have the same scenario.

I quite like it, gives the impression of being at the movies. Other half hates it and adjusts the picture on the tv from Wide Screen to Cinema and that gets rid of it but I think the picture then loses some of its sharpness.

Maybe its my eyes!
 
fraspotter
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RE: Blu Ray And HD Viewing Question

Tue Jan 20, 2009 5:37 pm

I have a 40" Samsung 1080p HDTV with a Panasonic DMP-BD35 Blu-Ray Player and just watched "Rambo" on Blu-Ray the other day. No black bars appeared...
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David L
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RE: Blu Ray And HD Viewing Question

Tue Jan 20, 2009 5:50 pm



Quoting Homer71 (Reply 7):
Personally, I don't mind the black bars as long as I am viewing the movie in its true apect ratio.

Ditto. I know some people who always stretch the picture to fill the screen. I just don't see the point in paying for a good TV then watching a badly distorted picture.
 
Jaws707
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RE: Blu Ray And HD Viewing Question

Tue Jan 20, 2009 7:04 pm

Homer 71,
Thanks for the link and the explanation! Really helps me understand this situation.
 
vikkyvik
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RE: Blu Ray And HD Viewing Question

Tue Jan 20, 2009 7:11 pm



Quoting Homer71 (Reply 7):
With a 16x9 HDTV, that gives you a screen ratio of 1.78:1. With a standard 4x3 TV, the ratio is 1.33:1. Movies are filmed in various screen ratios.

Alot of them are filmed in 1.85:1 which is close enough to a 16x9 screen that they can stretch it enough to fill the whole screen.

On the other hand, alot of movies are filmed in 2.35:1 (even 2.40:1) - it is an even wider screen, which will create black bars on the top and bottom on a 16x9 HDTV. You will lose alot of the viewing area (on the sides) if you have it cropped in order to fill the whole screen.

And of course, to top it all off, the wide-screen monitors that you get with most PC's these days are 1.6:1  Yeah sure

I figured since HDTV and wide-screen monitors were growing in popularity at about the same time, they could have at least made them the same aspect ratio.

I suppose that would have been too logical. Oh well.
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RIHNOSAUR
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RE: Blu Ray And HD Viewing Question

Wed Jan 21, 2009 6:30 pm



Quoting Delboy (Reply 8):
Other half hates it and adjusts the picture on the tv from Wide Screen to Cinema and that gets rid of it but I think the picture then loses some of its sharpness.

Maybe its my eyes!

In line with what is mentioned above, what other half is doing by applying those settings is simply stretching the image so that it fills the screen, however by doing so, you have to "magnify" one of the dimensions (in order to match the HDTV aspect ratio) so inevitably the image will like more "pixelated" or of an inferior quality. This is analogous to when you use digital zoom or zoom a digital picture to the point where each true pixel uses more than one pixel in the screen.

That's why one should pay close attention to optical zoom rather than digital zoom (they use it as a gimmick in cammeras)

Quoting FRAspotter (Reply 9):
No black bars appeared...

again as demonstrated above it depends heavily on the permutation of settings in one's system.

Quoting David L (Reply 10):
I just don't see the point in paying for a good TV then watching a badly distorted picture.

fine point, but the flip side of that is that since aspect ratios in which films are made and the HDTV screens do not always match, you loose (in absolute terms) lines on your screen if you want to not loose quality. And that is my pet peeve, that I payed for those darn 1080 lines..so its annoying to not use them all!!!

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David L
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RE: Blu Ray And HD Viewing Question

Wed Jan 21, 2009 6:44 pm



Quoting RIHNOSAUR (Reply 13):
you loose (in absolute terms) lines on your screen if you want to not loose quality. And that is my pet peeve, that I payed for those darn 1080 lines..so its annoying to not use them all!!!

I know that's the argument but it just doesn't wash with me.  Smile

Whatever the aspect ratio of your display, some programmes aren't going to fit exactly. I'd rather watch a good image with some wasted space than watch a film that's grotesquely distorted or watch short, fat soccer players playing soccer with a rugby ball.

"It looks completely unrealistic but there's no wasted space"? Not for me, thanks!
 
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OA260
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RE: Blu Ray And HD Viewing Question

Wed Jan 21, 2009 7:01 pm

Well I have to say I will never regret getting my HDTV 1080. Even when I have to adjust the screen the picture is great.

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