[FFmpeg-trac] #9950(documentation:new): No docs for paletteuse filter option "dither=none"

FFmpeg trac at avcodec.org
Thu Sep 29 17:58:22 EEST 2022

#9950: No docs for paletteuse filter option "dither=none"
             Reporter:  jason        |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  documentation                      |  unspecified
             Keywords:  filters      |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
 The [https://ffmpeg.org/ffmpeg-filters.html#paletteuse docs for
 paletteuse] list "bayer", "heckbert", "floyd_steinberg", "sierra2", and
 "sierra2_4a" as acceptable values for "dither", with no documented option
 for disabling dithering entirely.

 However, the filter appears to accept "none" as an option to disable
 dithering, at least in:

 - Whatever version [https://video.stackexchange.com/a/32666 the author of
 this answer] was using in Nov 2020, as well as the author of the question
 there, and
 - My version: 4.3.2-2021-02-27-full_build-www.gyan.dev (I didn't test on

 It should probably be documented. However, I'm not sure if this is a
 documentation error vs. "none" not being a stable long-term option.

 Does anybody know what version "dither=none" started being valid with, and
 whether or not it's intended to continue working in the foreseeable
 future? If it's an unstable or temporary feature, then it might not
 actually be a documentation error.
Ticket URL: <https://trac.ffmpeg.org/ticket/9950>
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