Video Asylum

Posted by Joe Murphy Jr (A) on February 22, 2007 at 18:07:27

In Reply to: Blue Ray is 1080p? posted by jfz on February 22, 2007 at 09:05:27:

There are technical differences as to how each format flags the material, but both formats encode up to 1920x1080p24 (there are also options for different resolutions and frame rates). So far, films encoded for both of them are 1080p on disc.

Blu-ray allows for direct output of 1080p24 (no conversion/on disc = output, as long as the hardware and firmware allow for it), but HD DVD flags the 1080p24 material to be output as 1080i60. For HD DVD to output 1080p24, either the decoder must ignore the flags (not happening at the moment) or the 1080i60 output from the decoder must be deinterlaced and reverse telecined (36 repeated frames are excluded from output).