On January 10, 2010 at 19:56, Daniel Tonks said...
The only problem playing 1080i through a 720p display is that you end up with multiple progressive/interlated conversions - 1080 progressive to 1080 interlaced then 720 progressive. Technically with proper pulldown detection it shouldn't cause issues, but there's really no benefit to giving your set 1080i versus 720p.
With some cheaper screens there is an actual reason not to do this - as to convert 1080i to 720p they simply discarded one of the fields, resulting in the equivelant of 1280x540 resolution.
If it were one of those 1366x768 screens then there MIGHT be a reason to give it 1080i (for a few more pixels resolution), as long as the built-in scaler works correctly.
And on TV sources, I know with my cable box I do see occasional issues with 720p to 1080i to 1080p.
Dan, I have not spotted any issues, yet. The Dynex 32" screen is 1366x768. Next time I play a BR movie I'll try switching the BR player output resolution from 1080i to 720p to see if there is a difference. However, I suspect that the small screen size would make any difference virtually unnoticeable, especially to my untrained eye.
(ah ha moment)
One thing I did notice is that the TV must be placed into "wide" mode in order for the movie to display properly. My son has an Xbox 360 and when he plays his games on that TV via HDMI cable he also must force the TV into "wide" mode. I wonder if forcing the Xbox and the BR player to put out 720p stop this quirk from occurring?
