[MPlayer-users] monitor size vs. aspect ratio vs. resolution

Michel Bardiaux mbardiaux at mediaxim.be
Thu Aug 18 15:05:09 CEST 2005

Rich Felker wrote:
> I was assuming that whichever monitor you chose would have square
> pixels, so that the ratio of number of pixels would be identical to
> the physical aspect ratio. If this wasn't the case, then all of what I
> said was meaningless, sorry.

A very risky assumption. First, on my system (Exceed on a Dell 
Optiplex-GX150 with Sony CPD-420GS on NVIDIA GeForce4 MX440 with AGP8X 
(as reported by W2K "Display properties"), xdpyinfo says:

screen #0:
   dimensions:    1280x1024 pixels (370x270 millimeters)
   resolution:    88x96 dots per inch

Second, its my observation that *very* few people care to calibrate the 
geometry of their monitor. When one day I captured PAL at 704x576 but 
mistakenly created video files stating pixel aspect ration 1, no one saw 
anything wrong until the TV broadcast a tuning pattern with circles and 

>>P.S. I'm really not making fun w/ this question, despite the seeming 
>>appearance of it. :)
> :)
> Rich

Michel Bardiaux
R&D Director
MediaXim S.A.  Bd. du Souverain, 191  B-1160 Bruxelles
Tel : +32 2 790.29.41

More information about the MPlayer-users mailing list