Random question for the tech savy - AVS Forum | Home Theater Discussions And Reviews
Forum Jump: 
 1Likes
  • 1 Post By Don Landis
 
Thread Tools
post #1 of 3 Old 02-16-2019, 10:45 AM - Thread Starter
Member
 
Join Date: Jan 2019
Posts: 29
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quoted: 20 Post(s)
Liked: 7
Random question for the tech savy

Just wondering, when you download a 1080p SBS file and use TV SBS 3D mode to overlap, is that effectively the same as what BD 3D is doing?

Are the discs SBS files and the TV or player configured to auto adjust so that you never see the SBS? Or is it going through a different (better?) process?
Sacramentojoe is offline  
Sponsored Links
Advertisement
 
post #2 of 3 Old 02-16-2019, 02:19 PM
AVS Forum Special Member
 
3DBob's Avatar
 
Join Date: Aug 2014
Location: Southeastern Michigan
Posts: 2,445
Mentioned: 31 Post(s)
Tagged: 0 Thread(s)
Quoted: 1087 Post(s)
Liked: 585
Quote:
Originally Posted by Sacramentojoe View Post
Just wondering, when you download a 1080p SBS file and use TV SBS 3D mode to overlap, is that effectively the same as what BD 3D is doing?

Are the discs SBS files and the TV or player configured to auto adjust so that you never see the SBS? Or is it going through a different (better?) process?
Most 3D TVs, (not projectors) will process an SBS 3D file and show it properly. In an SBS file, the left and right eye images are compressed into a half-image for the left eye and right eyes. So for a 1920x1080 HD image, the left eye is compressed into 960x1080 pixels and so is the right it. This is decompressed into left and right 1920x1080 images on the screen.

A bluray 3D image, however, has two 1920x1080 images packed together in what is called a "frame-packed" image. Therefore the resolution is a full 1920x1080 image for each eye with no compression--yes somewhat sharper with a little more apparent detail.

The TV software does the adjust for SBS automatically, and you can sometimes further adjust the separation to increase or decrease the depth of the 3D image. But you can usually do that with bluray too. If you have the same movie or file available in either SBS or bluray, always go for the bluray if you can. However, on a regular 4K TV (not a projector), the 3D SBS image will be upscaled somewhat for the additional pixels available and appear to have more detail like the bluray.
3DBob is offline  
post #3 of 3 Old 02-19-2019, 06:46 PM
AVS Forum Club Gold
 
Don Landis's Avatar
 
Join Date: Jun 1999
Location: Jacksonville, FL
Posts: 12,923
Mentioned: 5 Post(s)
Tagged: 1 Thread(s)
Quoted: 1481 Post(s)
Liked: 438
Quote:
However, on a regular 4K TV (not a projector), the 3D SBS image will be upscaled somewhat for the additional pixels available and appear to have more detail like the bluray.
Bob that depends on the 4K projector. Sony upscales all 1080P 2D and 3D, frame packed, SBS and T/B to 4K to fill the screen area the same as a 4K video. In addition they have a special upscale enhancement called a Reality Creation that allows the pixel to not just be quadrupled x4 but each new pixel is modified by the pixel it is bordered so that there are no two adjacent like pixels and the image is like a true 4K but because it doesn't originate that way the 4K is artificial. At least that's my understanding on how it works. Performance wise, a 1080 blu-ray 2D or 3D looks better with more detail than it did on a 1080P projector. Gradients are smoother and text is sharper.
3DBob likes this.

My 3D and 360VR videos and more
Don Landis HT System: Projector Sony VPL VW665ES Players: Samsung UBD K8500 OPPO BD93 Sony BDP S6200 All Regions Player Denon AVR S940, 7.1 JBL Professional series and Klipsch PS3, XBOX360, Dish VIP722K; 3D Edit Suite:Adobe Premiere, Edius7.53, Vegas Pro v13, Power Director16, i9-7980XE/GTX1080Ti, LG 3D TV DM2752
Don Landis is offline  
Sponsored Links
Advertisement
 
Reply 3D Tech Talk

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page


Forum Jump: 

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off