[FFmpeg-devel] [PATCH] avfilter: Added siti filter

[Paul B Mahol]

On Fri, Jan 22, 2021 at 9:05 PM Werner Robitza <werner.robitza at gmail.com>
wrote:

> On Fri, Jan 22, 2021 at 12:28 PM Paul B Mahol <onemda at gmail.com> wrote:
> > > As an end user I would find an output file with a known format much
> > > easier to work with.
> > > This works very well for the libvmaf filter, for example.
> > > Could you please explain how to achieve the same kind of output with
> > > the metadata injection?
> > >
> >
> > -vf your_filter,metadata=mode=print
>
> Thanks, I know this, but this is not a known format that can be easily
> parsed like a plain CSV file. At least the way the SITI filter is
> used, regular users just want simple output in a file that they can
> directly load into Excel, Python, whatever. (Just like for VMAF.)
>
> I understand why you wouldn't want each filter to have its own IO
> functionality, but in terms of usability, only having the metadata
> option would be extremely bad.
>

It is not bad, feature is already present.


>
> (Perhaps the real solution would be to have the metadata filter
> generate different kinds of known output formats.)
>

You can use ffprobe for that. It support CSV output format and it does not
ignore frame metadata if you set it.
There is no reason for filter to have own IO output file/path, such
functionality should be deprecated and removed.



>
> Werner
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