[FFmpeg-soc] making moving and zooming effect

[Oleksandr Bondar]

Thanks for the response.

When I got something working will put it here.

Have one more question.

Is it possible to use scale and overlay filters with dynamic values of h:w
for scale and x:y for overlay?
like it is possible in setpts filter,
'setpts=AVTB/25*(N+0.05*sin(N*2*PI/25))'

2009/11/4 Stefano Sabatini <stefano.sabatini-lala at poste.it>

> On date Tuesday 2009-11-03 23:05:52 +0200, Oleksandr Bondar encoded:
> > Hello,
> >
> > I am creating video web editor where I work on video effects now. Want to
> > have effect when few videos change each other by moving and zooming. like
> > slideshow on mac.
> >
> > As I understand from sources and docs, I need to use transpose and scale,
> > may be overlay filters. But I do not how to start with them.
>
> Each filter is documented in doc/libavfilter.texi. And of course there
> is the code, and ffplay.c / ffmpeg.c provide the reference examples
> for their use in a complete application.
>
> > I want to understand how to use filters taking filter source as a doc,
> but I
> > do not understand how to do this for now.
>
> You need a source, check for example libavfilter/movie_src.c.
>
> > Please, give me direction and few simple examples of using those filters
> so
> > I can continue and find out how to use avfilters.
>
> Are you suggesting a sample application?
>
> That would be useful for other users as well, if you want to try to
> tackle the problem and provide some code I'll try to help / review it
> here or on libav-user, then the example could be published on the
> multimedia wiki.
>
> Regards.
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-- 
Best,
Oleksandr
www.vertaline.com
www.vertaline.com.ua