[FFmpeg-devel] [PATCH 2/3] avfiltergraph: don't query formats if filter has uninitialized inputs

[Michael Niedermayer]

On Sat, May 05, 2012 at 12:07:37PM +0200, Nicolas George wrote:
> Le quintidi 15 floréal, an CCXX, Michael Niedermayer a écrit :
> > what disadvantage does it have if it supports any output and calls
> > libswresample when it cannot otherwise produce it ?
> 
> The chances that lavfi will guess exactly the correct channel layout that
> amerge wants to output, or even just the correct number of channels, are
> very thin (unless the heuristics are specifically tuned for amerge, and that

thanks for explaining, i had somehow not thought about the channels
in this case a querry_format() and iterative solver is indeed probably
needed

so no objection from me

[...]
-- 
Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB

It is what and why we do it that matters, not just one of them.
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