Mac OS X 10.5 does support burning blu-ray discs. See the "Leopard Really Likes Blu-ray Burners" post at this website:
http://www.hardmac.com/news/2007-12-05/
Okay so the images are in French, but you still get the idea of what they are doing.
Mac OS X 10.5 does NOT support playback of blu-ray movies because it does not provide copyright protection for the material (HDCP: high-bandwidth digital content protection). In my opinion this is a hardware and software issue.
Monitors usually connect to computers using VGA or DVI cables. VGA does not support copyright protection encryption and will not allow hi-def playback. HDCP encryption is used on DVI connections to provide copyright protection. HDMI is commonly used when connecting home theater components and is a descendant of DVI. Therefore HDMI uses HDCP encryption as well.
To provide copyright protection the encryption must be supported on the transmitter/source player, cable assembly, and the receiver/display device. In this case the transmitter is a computer. More specifically the video card inside the computer. Most newer video cards support HDCP encryption.
The next component is the cable assembly. Have you ever looked closely at a cable and noticed pins missing? I do not know the pinout for a DVI cable, but all the necessary wires need to be present inside the cable to transmit the encrypted signal to the receiver.
The last device is the signal receiver or in this case an Apple monitor. The monitor needs to support HDCP encryption in order to render an image on the screen, otherwise an HDCP encrypted signal will be meaning less to a "dumb display." HDCP enabled displays know how to establish, terminate, and maintain an encrypted session in order to view hi-def content like a blu-ray movie.
I do not know, but I assume the monitor is at fault. Looking at Apple's website I notice the 23" and 30" models are named "Cinema HD Display." But I doubt HD has any meaning other than the display supports a resolution equal to or greater than 1080p. I do not think HD refers to HDCP encryption support.
Mmmm, I wonder....
1)The playback picture quality of hi-def content is equal to the original filming of the movie. And to address piracy, HDCP encryption was created to prevent making copies of anything but the original. So without HDCP, why not allow playback at a lesser picture quality? So if a computer does not support HDCP, but has a blu-ray player why can't it play movies at 480p or 720p. Playback at 1080p or higher would only be allowed using HDCP encryption.
2)FireWire or IEEE 1394 is a common feature on Apple computers. Digital Transmission Content Protection (DTCP) is to FireWire what HDCP is to DVI. In my opinion Apple computers should support HDCP encryption on DVI connections and DTCP encryption on IEEE 1394/FireWire connections.
Brandon Moses