[MEncoder-users] mpegopts vaspect vs. lavcopts apsect

[Giacomo Comes]

On Fri, Jun 15, 2007 at 12:34:05PM -0700, Trent Piepho wrote:
> On Fri, 15 Jun 2007, Nicolas Hesler wrote:
> >
> > Let's say I'm transcoding a video from 1280x720 (with a broken aspect
> > ratio) to 720x480 at 16/9.   If the source is transcoded to 720x480 and
> > lavcopts aspect is set to 16/9, is there any advantage to fixing the
> > broken aspect ratio in mpegopts?  Doesn't it end up being the same thing
> > in the end?
> 
> If your converting something that's ATSC 720p to a DVD, you should scale
> 1280x720 to 704x480, not to 720x480.

Why? You should converto to the maximum resolution possible in order to
minimize the loss of information.

Giacomo