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Post by thepcguy on Feb 9, 2015 20:13:03 GMT -5
My Daughter gave me 'Guardians of the Galaxy' last Christmas. So I was watching the 3D version the other day, got tired of it and decided to watch in 2D. I was so lazy to get up to change the disc so i pressed the 3D/2D button on my Panasonic Plasma remote. It worked! I haven't really compared it with the physical 2D disc that came with the package so I don't know if the quality is the same. If they are, I'll be selling the 2D version.  Anybody tried this?   |
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Post by jcam2881 on Feb 9, 2015 21:21:13 GMT -5
My Daughter gave me 'Guardians of the Galaxy' last Christmas. So I was watching the 3D version the other day, got tired of it and decided to watch in 2D. I was so lazy to get up to change the disc so i pressed the 3D/2D button on my Panasonic Plasma remote. It worked! I haven't really compared it with the physical 2D disc that came with the package so I don't know if the quality is the same. If they are, I'll be selling the 2D version. Anybody tried this? Yes - same thing. I do this with all my 3d movies. Have them stored digital on my Mac and you can choose to play 3d or 2d (using the 3d file/plex) . Believe it just ignores the second video image . I could b wrong but I believe it to be the same file - I use make mkv and select the second video when extracting so Think it's accurate. |
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Post by moovtune on Feb 17, 2015 12:33:32 GMT -5
I believe you end up with half the 1920 x 1080p resolution when playing a 3D as 2D ... so I would expect a noticeable loss of quality, depending on screen size.
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reaper60
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Posts: 505
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Post by reaper60 on Feb 17, 2015 19:50:36 GMT -5
Watching in 3D as opposed to 2D works two different ways depending on your TV. Active 3D sets use a faster than typical frame rate and they display left and right screens one after the other while your glasses open and close a shutter over one eye at the same time. It happens so fast your brain can't keep up and see's one image that is perceived as 3D because the images differ just slightly and provide that effect.
If you view this content in 2D you would simply cut the frame rate in half and only view one of the images as typical. No gain or loss in quality.
The second format is passive 3D where by the two images are shown on the screen simultaneously. This is done by altering each vertical pixel line with the corresponding line from the second image. The passive glasses then have a filter built in to allow you left eye to see every other vertical pixel, and the same for the right. This works well but it cuts the resolution in the vertical plane in half. A 1080p movie in passive 3D would be viewed as 540p. By hitting the 2D button on the TV you shut off that vertical interlace and again return your set to a regular single 1080p image per frame. Again, normal content, better quality vs the 3D.
Point is, given both cases your 3D disc contains the normal 1080p movie, but it also contains a duplicate that is slightly off so that your set can display it in either of the above ways to give the feeling of 3D.
Keep only the 3D version. If you have a passive 3D set you may also find you enjoy details in movies more in 2D. Given the popularity of 4k TV we will now have the ability to create passive 1080p by using the 4k display. This could be handy!
Active 3D sets almost always are more expensive and have much faster refresh rates to keep up with the needed image speeds. My Sony 3D is 240 hz native refresh.
Beware of TV manufacturers using names like motionflow 240 to achieve a perceived 240 FPS. This is simply an algorithm in the set to flash the backlight at 240hz. While the screen is capable of refreshing at only half or one quarter that speed. In essence you recieve many duplicates of the same frame visually as opposed to a true 240 different frames of motion.
*steps off soap box*
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