[MPlayer-users] use of libavcodec option aspect= and -vop crop

[D Richard Felker III]

On Thu, Feb 06, 2003 at 12:40:45PM +0100, fc wrote:
> [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> * Eric Potter <ericp at earthlink.net> [050203, 09:30]:
> > [Automatic answer: RTFM (read DOCS, FAQ), also read DOCS/bugreports.html]
> > On Wed, 2003-02-05 at 07:35, Chris Sincock wrote:
> > > I am still not sure which is the best way to go, ie
> > >    - leave the bands, no (or conservative) cropping and use aspect=
> > >    - crop the black stuff, do a bit of calculation, rescale one 
> > >      dimension, and use aspect=
> > > or - crop the black stuff and just rescale the movie to the correct
> > >     size, and don't use aspect=
> > > 
> > > I eventually went with option 1 after trying the different methods
> > >  as it looked to me like it produced the best video quality for a 
> > >  given bitrate.
> > > 
> > > originally I just tried aspect=<a calculated value> to correct the
> > > difference, but it only accepts a few fixed aspects.
> > 
> > You do understand that if you encode with aspect, then mplayer is the
> > only viewer that can correctly playback the resultant file, as
> > has been stated many times on this list.  Much better to use scale IMHO.
> > 
> 
> I tried to rescale a film and leave the band (-vop scale=x:y crop=x:y)
                                                             ^^^

Wrong syntax: you need a comma (,) not a space!

Rich