[FFmpeg-devel] [PATCH] video stabilization plugins using vid.stab library

Clément Bœsch ubitux at gmail.com
Sun Apr 14 22:06:36 CEST 2013

On Sun, Apr 14, 2013 at 09:58:20PM +0200, Georg Martius wrote:
> Hi,
> On Sunday 14 April 2013 13:00:54 Clément Bœsch wrote:
> [...]
> > 
> > Your patch was not rebased on the master since a long time, so we can't
> > apply it. Additionally, some recent changes in libavfilter will require
> > some little adjustments in your filters...
> > 
> Little adjustments are well put....
> I don't understand the new options system and I don't see at the moment how it 
> can be implemented with my library.

> When exactly are the options processed and the values set? It is before init 
> is called right?

Yes it's before init.

> But what if the filter needs to initialize something before the option values 
> are written.

You can't. Actually, if you need to do that, you might have a design

> Also I found it weird to not see any reference of the filterXX_options variable 
> again in the code. Too much magic going on...

You should look at similar filters and use them as reference. The idea is
to have an AVOption array, and set the priv_class in the AVFilter

Clément B.
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