[mythtvnz] Ratios, Was Building a new box using an ASUS A8N-VM CSM board

[mythtvnz@lists.linuxnut.co.nz]

Steve said
> I've got one too, had no problems getting it working. I've also got a
> tuner-less video capture card for Sky and with my current capture
> settings (576x576 mpeg4 + mp3)

This one has been bugging me for weeks.  Why do many of the mythtv howtos
(and the default) use a 1:1 ratio of 480x480?

Surely a 4:3 ratio like 640x480 or 320x240 would be best?