[FFmpeg-devel] [PATCH] libavfilter image transformations

Michael Niedermayer michaelni
Wed May 26 20:57:17 CEST 2010

On Thu, Apr 22, 2010 at 08:28:00PM +0200, Georg Martius wrote:
> Hi,
> I am the guy who wrote the stabilizer/deshaker plugin for transcode. Daniel an 
> my are going to port it to ffmpeg, hopefully ;-) First of all, thank you guys 
> for the helpful comments so far.

such filter is definitly welcome :)

> >> [...]
> >> This is useful for any filter that might want to transform video frames in
> >> any way in the future. I have at least one filter that will use this but
> >> is waiting on motion estimation stuff (deshake/stabilize video).
> >
> >First, are these transforms separable? I'm not familiar with affine
> > rotations to know how to split them into 1D.
> What do you mean be 1D? 

1D transforms are transforms where one pixel depends only on pixels from the
row in whch it is or only depends on pixels from the column in which it is

that said, iam not saying that this filter should be done by using 1d
operations, especially not if the people working on it dont know how to
do it.

Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Thouse who are best at talking, realize last or never when they are wrong.
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