[FFmpeg-devel] [PATCH 4/5] lavfi: drop the requirement that request_frame returns a frame.

[Paul B Mahol]

Dana 21. 9. 2015. 00:32 osoba "Michael Niedermayer" <michaelni at gmx.at>
napisala je:
>
> On Sun, Sep 20, 2015 at 07:39:11PM +0200, Nicolas George wrote:
> > Le jour de la Raison, an CCXXIII, Paul B Mahol a écrit :
> > > For complex cases one needs to set for which set of input pixel
> > > formats output pixel format will be picked from another set, so its
> > > M->N mapping, without overlaping.
> >
> > Yes, but what algorithm do you apply to the mapping afterwards to
select the
> > best combination of formats? And for channel layouts, how do you
express the
> > mapping over a domain with billions of elements?
>
> is there a list of filters that would benefit from a more powerfull
> query_format ?
> iam asking as such list could be useful in the design, so potential
> designs can be checked against the filters in the list, to see how
> much a design would improve things ...
>

See histogram, waveform and vectorscope. Using rgb48 as input picks wrong
output format.

> [...]
>
> --
> Michael     GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB
>
> Old school: Use the lowest level language in which you can solve the
problem
>             conveniently.
> New school: Use the highest level language in which the latest
supercomputer
>             can solve the problem without the user falling asleep waiting.
>
> _______________________________________________
> ffmpeg-devel mailing list
> ffmpeg-devel at ffmpeg.org
> http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
>