> -----Original Message-----
> From: ffmpeg-devel <ffmpeg-devel-boun...@ffmpeg.org> On Behalf Of
> Paul B Mahol
> Sent: Tuesday, 28 September 2021 18:05
> To: FFmpeg development discussions and patches <ffmpeg-
> de...@ffmpeg.org>
> Subject: Re: [FFmpeg-devel] [PATCH] avfilter/elbg: Extend filter to
> include alpha values in the quantization procedure
>
> On Tue, Sep 28, 2021 at 5:43 PM Soft Works <softwo...@hotmail.com>
> wrote:
>
> >
> >
> > > -----Original Message-----
> > > From: ffmpeg-devel <ffmpeg-devel-boun...@ffmpeg.org> On Behalf Of
> > > Paul B Mahol
> > > Sent: Monday, 27 September 2021 18:37
> > > To: FFmpeg development discussions and patches <ffmpeg-
> > > de...@ffmpeg.org>
> > > Subject: Re: [FFmpeg-devel] [PATCH] avfilter/elbg: Extend filter
> to
> > > include alpha values in the quantization procedure
> > >
> > > On Mon, Sep 27, 2021 at 5:30 PM Michael Niedermayer
> > > <mich...@niedermayer.cc>
> > > wrote:
> > >
> > > > On Sun, Sep 26, 2021 at 05:56:36PM +0000, Soft Works wrote:
> > > > >
> > > > >
> > > > > > -----Original Message-----
> > > > > > From: ffmpeg-devel <ffmpeg-devel-boun...@ffmpeg.org> On
> Behalf
> > > Of
> > > > > > Michael Niedermayer
> > > > > > Sent: Sunday, 26 September 2021 18:52
> > > > > > To: FFmpeg development discussions and patches <ffmpeg-
> > > > > > de...@ffmpeg.org>
> > > > > > Subject: Re: [FFmpeg-devel] [PATCH] avfilter/elbg: Extend
> > > filter to
> > > > > > include alpha values in the quantization procedure
> > > > > >
> > > > > > On Sun, Sep 26, 2021 at 04:57:25AM +0000, Soft Works wrote:
> > > > > > > Usage example:
> > > > > > >
> > > > > > > ffmpeg -y -loglevel verbose -i "..\fate-
> > > suite\apng\o_sample.png" -
> > > > > > filter_complex "elbg=pal8=1:use_alpha=1" -frames:v 1
> out.png
> > > > > > >
> > > > > > > Signed-off-by: softworkz <softwo...@hotmail.com>
> > > > > > > ---
> > > > > > > doc/filters.texi | 4 ++++
> > > > > > > libavfilter/vf_elbg.c | 25 ++++++++++++++++---------
> > > > > > > 2 files changed, 20 insertions(+), 9 deletions(-)
> > > > > >
> > > > > > will apply
> > > > >
> > > > > Thank you.
> > > > >
> > > > > Please allow me another note: I think the naming of this
> filter
> > > > > is terrible. I've gone through the list of all ffmpeg filters
> > > > > many more times than the typical user, but without the
> specific
> > > > > pointers I had gotten from you and a few other devs, I would
> > > > > have never identified the "elbg" filter as something that
> > > > > would do what I'm looking for.
> > > >
> > > > i would tend to agree, yes, in fact i think
> > > > finding filters based on what they do is hard
> > > > and iam not sure their names alone should be how they need to
> be
> > > found
> > > >
> >
> > The names can't be it alone, but good naming would be a helpful
> > element.
> >
> >
> > > Every filter have short description. So next time use grep or
> search
> > > feature.
> >
> > You have added a large range of audio filters and I'm sure many of
> > them are very useful, but I'm afraid that often I do not have the
> > slightest clue about what they are doing, not even when reading the
> > description text ;-)
> >
>
> Are you audio engineer? Follow documentation.
Accidentally, I'm quite familiar with audio production and studio
technology, that's why I'm sure that even for audio engineers it's
not always clear what the filters are doing. The documentation is
often too minimal and it would be nice when it would include
example use cases and example command lines.
Same as for the elbg filter, I don't mean it in a negative way.
What I mean is that it's somewhat unfortunate to put so much effort
in developing those filters, when their benefits remain to be invisible
for the majority of users.
softworkz
_______________________________________________
ffmpeg-devel mailing list
ffmpeg-devel@ffmpeg.org
https://ffmpeg.org/mailman/listinfo/ffmpeg-devel
To unsubscribe, visit link above, or email
ffmpeg-devel-requ...@ffmpeg.org with subject "unsubscribe".
