2.35:1 footage playing at 2.25:1 on w/s tv

L

lt-cartman

Member
Hi all quick question I rendered out a 1920*816 video from premiere pro 5.5 (square pixel).
It's ratio is 2.35:1 but when viewed on a widescreen tv a quick measure with a tape reveals a ratio of 2.25:1

I know that 2.25:1 is a pixel aspect ratio option in premiere pro 5.5

Anyone out there have any ideas how I can force the video to play in 2.35:1 ratio on the tv (maybe its a pixel aspect ratio thing meaning that for pc you need square pixels and for tv i need to export out a new vidoe at a different pixel ratio

Anyway thanks for any help in advance.

Toolmam
 
lt-cartman said:
Hi all quick question I rendered out a 1920*816 video from premiere pro 5.5 (square pixel).
It's ratio is 2.35:1 but when viewed on a widescreen tv a quick measure with a tape reveals a ratio of 2.25:1

I know that 2.25:1 is a pixel aspect ratio option in premiere pro 5.5

Anyone out there have any ideas how I can force the video to play in 2.35:1 ratio on the tv (maybe its a pixel aspect ratio thing meaning that for pc you need square pixels and for tv i need to export out a new vidoe at a different pixel ratio

Anyway thanks for any help in advance.

Toolmam
Click to expand...

Not familiar with many, in fact incredibly few, TVs, it is hard to say... However, I was at a hotel recently, and the LG TV presented everything in '16:9' format no matter what type of material
was the source. I found looking through the menus that one could select '4:3'. I selected that, and that cleared up a number of 'distortions' due to automagically conforming the source to 16:9.

And as it was 16:9 material did in fact come up as 16:9, where as 4:3 (I was watching TCM which has a number of old movies which were originally shot in 4:3), was correct... certain aspect ratios
yield strange 'letter/pill' boxing, but as far as I could tell, circles that were 'ciricles' came out 'circles' for the most part... a tell tail sign of bad conforming of aspect ratio is that circle come out ellipses...
 
Thanks for replysRe David - there's no overscan on my 1080p plasma tv. Only CRT tv have overscan and se versions of 720p tv had some overscan going on as well Re j1clark. I always use the proper screen option ie 16:9 for 16:9 footage and 4:3 for 4:3 footage it really annoys me when tvs are set to auto mode. The test footage I used has a circle in it and it's a perfect circle on both the pc and the tv screen and when played on a pc its screen it's ratio is 2.35:1I'm wondering is there a pixel aspect ratio that the footage has to set specifically to in order for it to be proper 2.35:1 on a plasma/LCD tv. At the moment it's set to square pixelThanks toolman
 
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Bruce196 said:
Should your 2.35 project be packaged within a normal 1920-1080 frame so that the tv is not confused?
Click to expand...
Yea that's one way to do it but by using a project height of 816 px instead of 1080 it follows that at a certain bit rate the 816 footage will have a higher bit rate due to not having to encode the black bars. Also I'm just intersted on finding out weather I need to use a different pixel aspect ratio. I must look for a 2.35:1 dvd I have and play it to see whats the aspect ratio.
 
Professional way to do it is to letterbox it. This will prevent incompatiblity issues between different devices and sets. This is how blu-ray is distributed. Black bars don't consume much bitrate
 
PDR said:
Professional way to do it is to letterbox it. This will prevent incompatiblity issues between different devices and sets. This is how blu-ray is distributed. Black bars don't consume much bitrate
Click to expand...

point taken.

just fascinated as to what ratio would be needed to make the footage appear in 2.35:1 on a 1080p plasma/lcd

Toolman
 
It depends on your setup, what hardware/device you are using playback , what kind of TV, what settings you are using. There are many variables, too many to list. It's not just the display you have to worry about, or only the footage settings

For example, some have a 1:1 pixel mapping feature. If you turn it on, this will be 2.35:1

Some models might display it as 2.35:1 correctly, some might not

1920x816 footage on most blu-ray players, and PS3 will be distorted. Some will play with only the top half and the bottom part black (not centered)

Safest way for all devices and displays is to letterbox it.
 
The 1080p LCD I'm reading this on has overscan unless you set it specifically not to. Overscan is not just a CRT thing.
 
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