[FFmpeg-devel] [RFC] AVFilter Parser

[Michael Niedermayer]

On Sat, Mar 22, 2008 at 03:14:39AM +0100, Aurelien Jacobs wrote:
> Michael Niedermayer wrote:
> 
> > On Fri, Mar 21, 2008 at 10:02:35PM +0100, Michael Niedermayer wrote:
> > > Hi
> > > 
> > > Well, after various flames, discussions, some implementation and so
> > > on. Heres yet another proposal, this time mostly properly defined,
> > > i hope this will avoid flames and misuderstandings.
> > > This one is quite similar to the previous proposals, the main
> > > difference besides a clear definition of things is the
> > > feedback/feedforward syntax. The new syntax avoids the often cited
> > > problem with string insertion of predefined filter graphs and name
> > > colissions.
> > 
> > 
> > Some examples for filters from a filter lib:
> > 
> > my_filter0='picInPic;nop , picInPic'
> > that filter would place stream 1 and 2 as subpics in stream 0
> 
> Indeed, but it took me a long time to understand it.
> I know it's clearly defined in your syntax definition. But when
> reading this example, I intuitively though that ; has a higher
> priority than ,. I'm not sure why I had this impression. Maybe
> that's only because that's the way it was used in the original
> syntax.
> Anyway, just replacing the ; with a * (with the exact same
> definition) would have made it much more intuitive to me,
> because * generally has a high priority. (But maybe that's
> just me ?)

No, it also felt strange to me when i wrote it ;)
I dont mind if we replace ; by * ...

[...]

-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

Good people do not need laws to tell them to act responsibly, while bad
people will find a way around the laws. -- Plato
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