> -----Original Message-----
> From: ffmpeg-devel <ffmpeg-devel-boun...@ffmpeg.org> On Behalf Of
> Paul B Mahol
> Sent: Wednesday, October 13, 2021 9:27 AM
> To: FFmpeg development discussions and patches <ffmpeg-
> de...@ffmpeg.org>
> Subject: Re: [FFmpeg-devel] [PATCH 2/5] fftools/cmdutils: Print
> filter input/output formats in help output
>
> scale, extractplanes, alphaextract, waveform, vectorscope.
See the results below. Nothing is flawed. Of course there can't be an
output in all cases, as you have pointed out correctly.
But for the remaining 95% of filters, the formats output is very useful.
(and correct)
Filter extractplanes
Extract planes as grayscale frames.
Inputs:
#0: default (video)
Outputs:
dynamic (depending on the options)
extractplanes AVOptions:
Filter alphaextract
Extract an alpha channel as a grayscale image component.
Inputs:
#0: default (video)
Outputs:
dynamic (depending on the options)
Filter waveform
Video waveform monitor.
slice threading supported
Inputs:
#0: default (video)
Outputs:
#0: default (video)
waveform AVOptions:
Filter vectorscope
Video vectorscope.
Inputs:
#0: default (video)
Outputs:
#0: default (video)
vectorscope AVOptions:
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