Resizing confusion

[drob]

Until now I calculated the resizing for DVD in the following way:

640/aspect ratio of source=x

Then for NTSC borders I calculated:
480-x/2=y

Then I added x as my vertical value in the script, and y as my upper and lower borders value.

Now here is my confutation, I have a PAL source of 704x304
704/304=2.316
640/2.316=276
576-276/2=150

This gave me a very squashed image, using DV-Tool, and locking the aspect ration I got a vertical of 336 and borders of 120, which in turn gave me a correct image.

Where am I going wrong?
Thank you all for helping.
:confused:

[malkion]

2.316 is very close to 2.35 aspect.

640x272 would be your best bet.

[drob]

If I understood this article correctly then I found my mistake for PAL source I shouldn’t use 640 horizontal in my calculation but 768.
1.33x480=640 NTSC
1.33x576=768 PAL

So it should b 720x332.
The picture sure looks right.


http://www.videohelp.com/forum/archive/t174200.html