[FFmpeg-trac] #8459(avfilter:open): V360 + BLEND

FFmpeg trac at avcodec.org
Sat Feb 22 21:19:58 EET 2020


#8459: V360 + BLEND
-------------------------------------+------------------------------------
             Reporter:  villmer      |                    Owner:  villmer
                 Type:  enhancement  |                   Status:  open
             Priority:  wish         |                Component:  avfilter
              Version:  git-master   |               Resolution:
             Keywords:  v360         |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+------------------------------------

Comment (by mkoch):

 This is a workaround for removing the left vertical border (between x=249
 and x=250) by applying a suitable luminance gradient to all pixels in the
 x=229 to x=249 range.

 ffmpeg -i fli0z.png -vf
 geq=cb_expr='cb(X,Y)':cr_expr='cr(X,Y)':lum_expr='if(between(X,229,249),lum(X,Y)+lerp((X-229)/20,0,lum(249,Y)-lum(250,Y)),lum(X,Y))',format=rgb24
 -y out.png

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Ticket URL: <https://trac.ffmpeg.org/ticket/8459#comment:5>
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