[FFmpeg-trac] #8861(avfilter:new): Creating GIF with full transparent background from PNGs with semi-transparent pixels, somehow causes this outline

FFmpeg trac at avcodec.org
Mon Aug 24 19:51:57 EEST 2020


#8861: Creating GIF with full transparent background from PNGs with semi-
transparent pixels, somehow causes this outline
-------------------------------------+------------------------------------
             Reporter:  karl-police  |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avfilter
              Version:  git-master   |               Resolution:
             Keywords:  paletteuse   |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+------------------------------------

Comment (by karl-police):

 Replying to [comment:11 pdr0]:
 > Replying to [comment:9 cehoyos]:
 > > Replying to [comment:7 pdr0]:
 > > > I think that artifact is from the fps filter
 > >
 > > This seems unlikely as the artefacts are a known issue.
 >
 > Yes, it seems unlikely, and according to what -vf fps is supposed to do
 >
 > Excluding the fps filter, there are no artifacts. Using the fps filter,
 there are artifacts. Regardless of including or excluding -r as an input
 option. How else would you explain this observation?

 but why are there these artifacts?

--
Ticket URL: <https://trac.ffmpeg.org/ticket/8861#comment:13>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker


More information about the FFmpeg-trac mailing list