[mythtv-users] New nVidia 169.07 and interlace changes?

[Michael T. Dean]

On 12/21/2007 10:26 AM, Tom Dexter wrote:
> Speaking of that patch, I'd still love to know why the frontend
> reports 60Hz output as 30Hz when the output is interlaced....which is
> what that patch changes.  I posted a question to the dev list about it
> some time ago and got no response:
>
> http://www.gossamer-threads.com/lists/mythtv/dev/302387
>   

1080i60 is 1920x1080 pixel frames shown at 30 frames per second.  Each
frame is composed of 2 fields--each having half the number of lines of a
frame.

720p60 is 1280x720 pixel frames shown at 60 frames per second.

There is no such thing as 1080i120 or 1080p60 in the ATSC
specification.  There is, however, 1080p30 and 1080p24, as well as
720p30 and 720p24.

http://www.hdtvprimer.com/ISSUES/what_is_ATSC.html

Mike