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  #1 (permalink)  
Old 12th February 2003
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Default Aspect ratio for 16/9 TV

Hi,

I use BSplayer with a 16/9 TV.
When I play a 16/9 movie, I have to select 4/3 aspect ratio to have a correct aspect ratio on my TV.

But, most of the movies do not use 16/9 format, but some panoramic formats.

So each time I want to play a movie, I have to calculate the aspect ratio of the movie, to convert it, to add the aspect ratio in the list, and to select it. It is bit long.

Exemple : for a movie that use 1.85 aspect ratio. I have to multiply it by 0.75. The result is 1.3875, then I have to make a fraction with this number = 111:80

Could you add to the software an "original aspect ratio" corrected for 16/9 TV ?
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Old 30th June 2003
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Default Re: Aspect ratio for 16/9 TV

Quote:
Originally Posted by Garion
Hi,

I use BSplayer with a 16/9 TV.
When I play a 16/9 movie, I have to select 4/3 aspect ratio to have a correct aspect ratio on my TV.

But, most of the movies do not use 16/9 format, but some panoramic formats.

So each time I want to play a movie, I have to calculate the aspect ratio of the movie, to convert it, to add the aspect ratio in the list, and to select it. It is bit long.

Exemple : for a movie that use 1.85 aspect ratio. I have to multiply it by 0.75. The result is 1.3875, then I have to make a fraction with this number = 111:80

Could you add to the software an "original aspect ratio" corrected for 16/9 TV ?
Yes, this feature would be nice.
Meanwhile I calculated most common fractions to add in custom aspect ratios list.

640x272=30:17
640x352=255:187
640x270=16:9

576x240=27:15
576x304=27:19
576x320=27:20
576x256=27:16

512x224=204:119
512x272=24:17
512x288=4:3

608x256=57:32

544x304=51:38
528x288=11:8
704x384=11:8
592x256=111:64

not 100% sure of all
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Old 15th July 2003
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This would be more than welcome addition to the program. This feature (Anamorphic Aspect Ratio) is the only reason I'm currently using Zoom Player. I'd change back to BSplayer in an instant with this feature
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Old 15th July 2003
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See options, preferencies, video, custom aspect ratio, add
And add those ratios you use.
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Old 26th July 2003
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Adding anamorphic aspect ratio would make Bsplayer have all the features that I need. Now you have to always check the movie's resolution and manually choose the correct aspect ratio.

It shouldn't need much work to be implemented. Just multiply the original aspect ratio by 0.75.
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Old 31st July 2003
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I hope this feature would be added soon.
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Old 31st July 2003
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I think it would be a nice option too.
But I do have a solution. 8)

There are only 3 types of aspect ratios:

4:3 (TV)
320x240 352x240 352x288 448x336 480x368 512x352
512x384 544x368 576x384 576x432 608x400 608x464
640x432 640x480 640x512 704x480 720x480 720x576

16:9 (Wide TV)
352x192 352x208 352x224 416x240 440x281 480x272
512x272 512x288 512x320 544x288 544x304 544x320
560x288 560x336 576x304 576x320 576x352 592x320
608x320 608x336 608x368 624x336 624x352 640x336
640x352 640x360 640x368 640x384 640x400 672x352
688x368 704x368 704x400 704x416 720x416 720x432 720x448

11:5 (Cinema)
416x176 512x216 512x224 528x256 560x240 560x264
560x272 576x240 576x256 592x256 608x256 608x288
624x272 624x304 640x272 640x288 640x304 656x288
688x288 704x320 704x336 720x304 720x320 720x336 720x352

To play movies on a widescreen TV,
you need to use the following table:

4:3 Movie = 1:1 Wide TV
16:9 Movie = 4:3 Wide TV
11:5 Movie = 16:9 Wide TV

So you only need to add aspect ratios 1:1 and 11:5
because 4:3 and 16:9 are already there.

I also did find these aspect ratios,
but they are actually very close to 11:5
I do not see any reason to add these ones,
but I want to make a complete list. :shock:

2:1 512x256 608x304 640x320
2.5:1 640x256 720x288
2.58:1 576x224 704x272
2.66:1 720x272 640x240
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Old 31st July 2003
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The common cinema aspect ratio is actually 2.35:1.

11:5 = 2.20:1

For example:
576x240 = 2.25:1
576x256 = 2.40:1

Using the same anamorphic aspect ratio for these resolutions makes the picture look a little bit off. People look to skinny or fat etc...

And a perfectionist like myself can't let that happen :)
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Old 16th August 2003
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yep, i'm going to switch zoom player or media player classic http://sourceforge.net/projects/guliverkli/ which have this feature, sorry bs :(
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Old 12th November 2003
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Is this feature added in new version?
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Old 12th November 2003
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i don't see what the problem is. i use a widescreen lcd (1280x768) and ratio for all the stuff are correct as long as you have keep aspect ratio on original. also 4:3 stuff in 0.8.x automatically stretches to full width and cuts off top and bottom (i like that), i use ffdshow filters to add borders to both sides if i need to see top and bottom stuff.

in rc1, it's different. it stretches to height of monitor by default, not width. i don't like that. however you can do use pan now to stretch the screen horizontally. but this feature is not free of bugs and if you switch between fullscreen and window mode, the screen will get smaller and smaller until you can't see it anymore.
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Old 16th November 2003
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Quote:
Originally Posted by [CrusaderSean
]i don't see what the problem is. i use a widescreen lcd (1280x768) and ratio for all the stuff are correct as long as you have keep aspect ratio on original. also 4:3 stuff in 0.8.x automatically stretches to full width and cuts off top and bottom (i like that), i use ffdshow filters to add borders to both sides if i need to see top and bottom stuff.

in rc1, it's different. it stretches to height of monitor by default, not width. i don't like that. however you can do use pan now to stretch the screen horizontally. but this feature is not free of bugs and if you switch between fullscreen and window mode, the screen will get smaller and smaller until you can't see it anymore.
It is because you have a 16/9 resolution (1280x768), but most of the TV-Out can only output 4/3 resolution like (640x480, 800x600, 768x576), so the pixels are stretched on 16/9 TV.

I am still waiting this function for monthes. I do not understand why it is not still coded, it is just a multiplication by 0.75...

But, as the version 1.0 is not as complete as previous one (I have desinstalled it after 10mn) , I think I will use soon another player.
It is too bad. BSPlayer could have been the best player...
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Old 19th November 2003
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Default Aspect Ratio for 16:9 TV's

I believe you can use DirectVobSob to partially overcome this problem.

If you choose "Extend to 16:9" under the general tab and set to "Always load" instead of "Load when needed", it should add black bars to the top and bottom to conform with a 16:9 aspect ratio. Then it shouldn't be necessary to have more than one 16:9 aspect ratio in bsplayer.

Just a theory ... haven't tried it.
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Old 26th November 2003
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Default Re: Aspect Ratio for 16:9 TV's

Quote:
Originally Posted by UnderCover
I believe you can use DirectVobSob to partially overcome this problem.

If you choose "Extend to 16:9" under the general tab and set to "Always load" instead of "Load when needed", it should add black bars to the top and bottom to conform with a 16:9 aspect ratio. Then it shouldn't be necessary to have more than one 16:9 aspect ratio in bsplayer.

Just a theory ... haven't tried it.
It's not about adding bars to the movie it is about changing the aspect ratio so that the signal to your widescreen tv is used optimally. You literally squeeze the image so that you waste less signal on black bars. The tv then does the opposite and unsqueezes it. This results in a better picture on the tv (more pixels).

The reason you need to do this is because most videocards with tvout do not support widescreen tvs. They always send a 4:3 signal. However, most wide screentvs have an option to stretch the image to 16:9. So if you send a squeezed 4:3 signal it will look better when stretched back to 16:9 than if you send a 16:9 image with the black bars taking up most of the pixels.

Classic Media Player has a 'scale to 16:9' option that does just that. I use it all the time. As noted earlier, calculating the proper ratio is very simple (just multiply with 0.75). I have a little toy calculator on my homepage (www.xs4all.nl/~jgurp/homepage) that can convert aspect ratios to their anamorhic equivalents.
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Old 27th November 2003
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Default Aspect Ratios

I'm not talking about letterboxing...

For 1.85:1 movies, if you disable aspect ratio's and "fit to screen" it will have the correct anamorphic representation and you will get the full vertical resolution.

For 2.35:1 movies, you need to have black bars on top and bottom in order to conform to a 16:9 display device. The end result will still be anamorphic and you will not lose any vertical resolution.

What I meant was that DirectVobSub would add borders to aspect ratio's > 1.85:1 so that the movie with "fit to screen/no aspect ratio" will be presented in correct anamorphic proportions.

So in essence, it is about "adding bars" to the movie, if the movie is wider that 1.85:1.

All anamorphic DVD's with an aspect ratio > 1.85:1 have also black bars encoded in the movie, for the same reason: Namely to conform to a 16:9 display device.

But since I cannot get DirectVobSub to load under Zoom Player my suggestion was no good nevertheless.

/Thomas
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Old 27th November 2003
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Default Aspect Ratios

Correction:

What I meant in my last post was that I couldn't get DirectVobSub to load under BSPlayer, but I have gotten this setup to work (more or less) under Zoom Player.

/Thomas
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Old 28th November 2003
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Default Re: Aspect Ratios

Quote:
Originally Posted by UnderCover
Correction:

What I meant in my last post was that I couldn't get DirectVobSub to load under BSPlayer, but I have gotten this setup to work (more or less) under Zoom Player.

/Thomas
The whole procedure seems complicated: you have to install some filter which may or may not work and then you need to toggle all sorts of unrelated options in the GUI. I'd be surprised if more than a handful of users figure this out. What's against adding an anamorphic option? It's easy to do. The functionality for changing aspect ratios is already present.
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Old 28th November 2003
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Default Re: Aspect Ratios

Quote:
The whole procedure seems complicated: you have to install some filter which may or may not work and then you need to toggle all sorts of unrelated options in the GUI. I'd be surprised if more than a handful of users figure this out. What's against adding an anamorphic option? It's easy to do. The functionality for changing aspect ratios is already present.
Agree.
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Old 28th November 2003
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Default Aspect Ratios

I agree that implementing an anamorphic aspect ratio in bs-player would be the best solution all-round. I was merely proposing an alternate solution since anamorphic doesn't exist yet in bs-player.

However I have gotten my setup to work very well. I haven't encountered any problems, and best of all, I don't have to change aspect ratio at any time. I can just leave "aspect ratio'ing" off.

/Thomas
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Old 2nd December 2003
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Default Re: Aspect Ratios

Quote:
Originally Posted by UnderCover
For 1.85:1 movies, if you disable aspect ratio's and "fit to screen" it will have the correct anamorphic representation and you will get the full vertical resolution.
I do not agree with you, the aspect ratio for 16/9 is 1.77 and not 1.85. The error is not acceptable.



I am currently working on a launcher that will create an ini file and launch automaticaly the movie in its correct aspect ratio. I will use two methods :

- theorical correction taking into account the desktop resolution (the correction is not the same for 720x576 or for 768x576) and TV format (4/3 or 16/9)
- visual correction : a circle will be display on screen, and you will calibrate the correction with a trackbar until the circle will be really a circle. That will correct too the distorsion caused by bad settings of your TV.
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