[FFmpeg-devel] [PATCH] doc: add an overlay "side-by-side" example.

[Michael Niedermayer]

On Fri, Jun 08, 2012 at 08:23:06PM +0200, Clément Bœsch wrote:
> On Fri, Jun 08, 2012 at 10:36:49AM +0200, Michael Niedermayer wrote:
> > On Fri, Jun 08, 2012 at 08:05:46AM +0200, Clément Bœsch wrote:
> > > On Fri, Jun 08, 2012 at 07:55:19AM +0200, Clément Bœsch wrote:
> > > > ---
> > > >  doc/filters.texi |    5 +++++
> > > >  1 file changed, 5 insertions(+)
> > > > 
> > > > diff --git a/doc/filters.texi b/doc/filters.texi
> > > > index 150bde3..dc1cda1 100644
> > > > --- a/doc/filters.texi
> > > > +++ b/doc/filters.texi
> > > > @@ -2284,6 +2284,11 @@ ffmpeg -i input -i logo1 -i logo2 -filter_complex
> > > >  # add a transparent color layer on top of the main video,
> > > >  # WxH specifies the size of the main input to the overlay filter
> > > >  color=red at .3:WxH [over]; [in][over] overlay [out]
> > > > +
> > > > +# play an original video and a filtered version (here with the deshake filter)
> > > > +# side by side
> > > > +ffplay input.avi -vf 'split[a][b]; [a]pad=iw*2:ih[src]; [b]deshake[filt]; [src][filt]overlay=w'
> > >                                                  ^^^
> > >                                               and I could even drop this
> > 
> > it can be simplified further to:
> > 
> > -vf 'split[b], pad=iw*2[src], [b]deshake, [src]overlay=w'
> > 
> 
> Ah true, thanks, changed locally.
> 
> > and something like this may be interresting to support:
> > 
> > -vf 'split, {pad=iw*2; deshake}, overlay=w'
> > 
> 
> I wanted to reserve the { } for some other feature, but well why not.

we could use () [] or <> too


[...]

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Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

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