[mythtv-users] How will changing from 480x480 to 720x480 affect me?

[David Fishburn]

> -----Original Message-----
> From: mythtv-users-bounces at mythtv.org 
> [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of Trey Thompson
> Sent: Thursday, November 30, 2006 1:40 PM
> To: MythTV
> Subject: [mythtv-users] How will changing from 480x480 to 
> 720x480 affect me?
> 
> I saw a post from drescherjm that recommend to record in 
> 720x480 instead of the 480x480 so that there's no ffmpeg 
> needed when burning a full quality DVD.
> 
> How will changing that affect things like file sizes, screen 
> appearance, etc...?

How do you actually do this?
Is this done through the setup, or an OS call to the capture card?