Go Back   MacRumors Forums > Apple Hardware > Desktops > iMac

Reply
 
Thread Tools Search this Thread Display Modes
Old Apr 19, 2008, 03:15 PM   #1
acarle208
macrumors member
 
Join Date: Apr 2008
Question Does VGA support Blu-ray 1080p?

Just wondering if VGA can support Blu-ray?
__________________
Dell Dimension 2400 2.4GHz 256MB ram 40GB HDD
19-inch Dell monitor
4GB iPod mini
8GB iPod nano 3G Flyers!
acarle208 is offline   0 Reply With Quote
Old Apr 19, 2008, 03:16 PM   #2
Trip.Tucker
Guest
 
Join Date: Mar 2008
VGA is a video/resolution specification which simply put, defines a resolution of 640x 480. Blu-ray is a disk format. The two are not related. Can you clarify what you are asking?
Trip.Tucker is offline   0 Reply With Quote
Old Apr 19, 2008, 03:55 PM   #3
Pressure
macrumors 68040
 
Pressure's Avatar
 
Join Date: May 2006
Location: Denmark
Since playing BluRay requires a digital signal that is protected with devices that support HDCP, the simple answer is no.
__________________
Never Argue With An idiot. They'll Lower You To Their Level And Then Beat You With Experience!
Pressure is offline   0 Reply With Quote
Old Apr 19, 2008, 05:01 PM   #4
CWallace
macrumors Demi-God
 
CWallace's Avatar
 
Join Date: Aug 2007
Location: Seattle, WA
I have driven a 1680x1050 display with a VGA cable, so I imagine it could handle a Blu-Ray or HD-DVD 1920x1080p signal.

However, as Pressure noted, if the content is protected by HDCP (and it should be), since VGA does not support that standard, it will not display the signal at full-resolution (I believe it halves it to 960 x 540).
CWallace is offline   0 Reply With Quote
Old Apr 20, 2008, 12:34 AM   #5
James Howlett
macrumors member
 
Join Date: Apr 2008
Location: Abbotsford
Quote:
Originally Posted by CWallace View Post
I have driven a 1680x1050 display with a VGA cable, so I imagine it could handle a Blu-Ray or HD-DVD 1920x1080p signal.

However, as Pressure noted, if the content is protected by HDCP (and it should be), since VGA does not support that standard, it will not display the signal at full-resolution (I believe it halves it to 960 x 540).
I have used a vga connection with my xbox 360 and HD DVD drive, it shows 1080p fine. i dunno about blu ray though.
James Howlett is offline   0 Reply With Quote
Old Apr 20, 2008, 08:00 AM   #6
czachorski
macrumors 6502a
 
czachorski's Avatar
 
Join Date: Sep 2007
Quote:
Originally Posted by James Howlett View Post
I have used a vga connection with my xbox 360 and HD DVD drive, it shows 1080p fine. i dunno about blu ray though.
I believe that VGA is capable of transmitting 1080p, but as said earlier, it will not transmit Blue-Ray due to the HDCP limitations. So for example, if you had an external blue-ray player hooked to a Mac via and HDCP compliant cable, and the had the mini-DVI output on the Mac go to a TV via and VGA adapter as a mirrored display, I believe it would transmit the 1080p. No? Or does HDCP have a way to block such a transmission too?
__________________
27" iMac, Late 2012, 3.4 GHz Core i7, 3 TB Fusion Drive, 32 GB Ram
czachorski is offline   0 Reply With Quote
Old Apr 20, 2008, 10:11 AM   #7
CWallace
macrumors Demi-God
 
CWallace's Avatar
 
Join Date: Aug 2007
Location: Seattle, WA
Quote:
Originally Posted by czachorski View Post
So for example, if you had an external blue-ray player hooked to a Mac via and HDCP compliant cable, and the had the mini-DVI output on the Mac go to a TV via a VGA adapter as a mirrored display, I believe it would transmit the 1080p. No? Or does HDCP have a way to block such a transmission too?
HCDP requires every device in the chain of transmission to support it in order to transmit at "full quality". So once it hits the VGA adapter, the system would degrade the image quality by half.

The same would happen if you connected to a TV or monitor (like the ACD) that didn't support HDCP via DVI.
CWallace is offline   0 Reply With Quote

Reply
MacRumors Forums > Apple Hardware > Desktops > iMac

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Similar Threads
thread Thread Starter Forum Replies Last Post
No Blu-ray support gtstricky OS X 10.8 Mountain Lion 20 May 14, 2013 06:42 PM
Blu-ray or 1080p Apple TV? TheCaptain95 Apple TV and Home Theater 22 Mar 31, 2013 10:52 PM
The Dark Knight Rises, did you buy the Blu-ray or 1080p iTunes ? Che Castro Apple TV and Home Theater 164 Mar 8, 2013 10:40 PM
Average 1080p Blu-Ray HB Encoded Movie Size? fridgeymonster3 Apple TV and Home Theater 19 Nov 11, 2012 07:53 AM

Forum Jump

All times are GMT -5. The time now is 07:26 PM.

Mac Rumors | Mac | iPhone | iPhone Game Reviews | iPhone Apps