I think some people here don't fully understand the differences between NTSC and PAL Television standards.|
Now, let me explain:
With an NTSC signal, 525 lines of information are sent. With PAL 625 lines are sent. Now all these lines arent actually used for picture resolution, so in reality, the picture of NTSC is 480 lines, and PAL is 576 lines. PAL has 20% more vertical lines than NTSC. But the horizontal resolution is the same.
Now traditional TV signals dont actually have pixel resolution, so I'll use DVDs to illustrate:
An NTSC DVD has a resolution of 720x480, PAL has 720x576. But the picture is still in the same aspect ratio as the TV, 4:3 (or 16:9 if anamorphic).
So, the "pixels" on the TV arent square like on a computer screen, neither with PAL or with NTSC (PAL pixels are wider, and NTSC pixels are narrower)
Therefore, when a PAL system shows 480 lines you get black bars below and above the picture. The image isnt actually shrunken, it's just that the PAL tv standard has more vertical resolution. So, if you make a game "PAL optimized" (and thus keep it running at 50 Hz), the image actually has to be stretched vertically. If you run PAL 60 this doesnt happen, because PAL 60 standard has 480 lines resolution just like NTSC, it's just a different color signal.
Remember that the resolution of the TV/Monitor/display device isnt relevant here, it's the "resolution" of the signal that makes it different, a monitor can scale a picture any way it wants up to it's maximum resolution and refresh rate.
So, to sum up, an unoptimized PAL game does not have its image shrunken, it's just that sending a 50 Hz signal will make the TV display 576 lines (to fit with the PAL standard), and if there's only 480 lines of information to send, of course, some lines will be left black. By switching to a 60 Hz signal, the TV will display 480 lines, it's that simple.
#2755503, By ksvenheim Virtual Console 50Hz travesty
ksvenheim 32 posts
Seen 6 years ago
Registered 7 years ago