View Single Post
Old 31st January 2003, 17:50   #7  |  Link
movmasty
Registered User
 
Join Date: Feb 2002
Posts: 970
Quote:
Originally posted by TheWEF
when you watch the dvd with your software dvd player (e.g. powerdvd) the frame DOES fill the screen. why? because the programmers accepted a slight AR-error in order to avoid black bars in full screen.

note that if you crop off 8 pixels on each side you get 704x..., the resolution used in digital video cameras. this resolution uses the same pixel aspect ratio like 720x...
on a normal tv you never get to see these 8 pixels (usually a lot more than 8) because they lie in the "overscan area" outside the screen.
more exactly, the standalone dvd players send to the tv set only the central 704(702-711?) pels, then the tv overscan(that could also be 0, specially in not curved angle tv-set) acts on those 704 pels.
Since a dvd doesnt know by wich player and tv will be played is better to have those 16 pels more.

Now, are you sure that the software dvd players dont crops those 8+8 pels before sending to the computer?
If this is the case sw players are ITU complaint
movmasty is offline