[FFmpeg-user] stereo images conversion changes aspect ratio

[Tom Sparks]

--- On Sat, 4/6/11, Baptiste Coudurier <baptiste.coudurier at gmail.com> wrote:

> From: Baptiste Coudurier <baptiste.coudurier at gmail.com>
> Subject: Re: [FFmpeg-user] stereo images conversion changes aspect ratio
> To: "FFmpeg user questions and RTFMs" <ffmpeg-user at ffmpeg.org>
> Received: Saturday, 4 June, 2011, 12:38 PM
> Hi,
> 
> On 06/02/2011 09:20 PM, Tom Sparks wrote:
> > I am converting a stereo images that top/bottom to
> left/right
> >
> > I am using this command
> > ./ffmpeg -i "elphelimg_2421643.jpg" -qscale 1 -vf
> 'mp=down3dright' "output.jpg"
> >
> > here is the source imge
> > http://www.lightningridgecommunity.com/panorama/elphelimg_2421643.jpeg
> >
> > here is the result image
> > http://www.lightningridgecommunity.com/panorama/output.jpg
> >
> > As you can see the circle have changed into ovals, is
> there any way to stop this from happening?
> 
> Try settings "mp=down3dright=2:2"
> 
> For some reason I don't know, it keeps the same width by
> default.
>
that did not work :(

Error initializing filter 'mp' with args 'down3dright=2:2'

I am starting to think my version need to be updated (ffmpeg built on Mar 19 2011 08:54:17) :(

tom