[MEncoder-users] to crop or not to crop for DVB sources, aspect ratio issues?

[Phil Ehrens]

Nico Sabbi wrote:
> Dieter wrote:
> 
> >>I would like to use Mencoder to archive my DVB recording (MPEG2
> >>transport streams)...
> >>Keeping the original format is the no brainer option, but of obviously
> >>it isn't optimal for space saving (black borders).
> >>   
> >>
> >
> >Wouldn't the black borders be highly compressable and thus not
> >use much space?
> > 
> >
> 
> the high contrast between black and actual image is supposed to waste a 
> lot of bits.

You can see the wasted bits at high contrast boundaries
in real content as ringing or mosquito-noise. It's not
as obvious at the boundaries between the real content
and the bars, but it's still there.