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Warp wrote:
> Bryan Heit <bjh### [at] nospamucalgary ca> wrote:
>> (povray assumes square pixels and will render a 720x480 at
>> an aspect ratio of 3:2, not 4:3).
>
> If you want to render an image with an aspect ratio of 4:3 (regardless
> of the shape of the pixels in the target media) then you don't have to
> do anything to the scene. You just render it with the resolution of the
> target media (eg. in this case DVD). If the target media stretches the
> image so that it will cover a 4:3 area (IOW uses non-square pixels), then
> the image will be correct.
Although this is how it is implemented in the documentation, it is not
how it is implemented in the real world - at least in windows version
3.6.1c of povray. I've rendered over 30 hours of video (video time, not
rendering time), and if you do not manually enter the "right x*(4/3)"
command into the camera you get a distorted image on the DVD identical
to the distortion seen if you import a 720x480 square-pixel image. I've
seen this effect in multiple video-editing programs, so I doubt its a
software issue downstream of povray.
Bryan
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