VCD resizing question

[ofirmantis]

hi all

I have a PAL DVD which is 16:9 - when I am resizing it to 352x288 (PAL VCD) i need to determine the height of the black bars around it

if I want the same aspect ratio which is 16:9 , I need to resize the video only to 352x200 , right?
now, if I have a NTSC DVD, I need to resize it to 352x240 with black bars, but the movie is still 352x200 (video only) and this look strange to me: how can it be that the PAL and NTSV are different height (288 vs. 240 ) but the video is always 352x240 by my calculation? which one am I doing wrong?

thanks in advance,

Ofir

[jsoto]

Hi ofirmantis,

I do not know how you have calculated 352x200, but this is not the right number.

Well, VCD has a 4:3 Aspect Ratio (it is the same than 16:12, just multipling by 4), so you have to make a 16:9 window inside the 16:12 screen --> just correct the vertical size by 9/12

PAL: 288*9/12= 216, 2x36 black lines should be added.
NTSC: 240*9/12= 180, 2x30 black lines should be added.

The original resolution has no effect in this calculation, the only important thing is the original AR (16:9)

jsoto