[FFmpeg-devel] [RFC] AVFilter Parser
Fri Mar 21 22:19:57 CET 2008
On Fri, Mar 21, 2008 at 10:02:35PM +0100, Michael Niedermayer wrote:
> 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
this could also be written as:
my_filter1=' left>1 picInPic , right>1 picInPic'
and used like
or with my_filter0
Filter insertion from a lib is mere string insertion before parsing the whole
Also cases like
my_filter2='filter1 1>T , filter3 , T>1 filter2'
filter0 1>T , my_filter2 , T>1 filter4
Could be resolved perfectly if some stack is used for the named links.
Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
When the tyrant has disposed of foreign enemies by conquest or treaty, and
there is nothing more to fear from them, then he is always stirring up
some war or other, in order that the people may require a leader. -- Plato
-------------- next part --------------
A non-text attachment was scrubbed...
Name: not available
Size: 189 bytes
Desc: Digital signature
More information about the ffmpeg-devel