[FFmpeg-trac] #9811(avfilter:closed): filter 'zscale=transfer=linear' fails with "code 2050: active window must be positive"

[FFmpeg]

#9811: filter 'zscale=transfer=linear' fails with "code 2050: active window must
be positive"
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             Reporter:  rminnema     |                    Owner:  (none)
                 Type:  defect       |                   Status:  closed
             Priority:  normal       |                Component:  avfilter
              Version:  git-master   |               Resolution:  fixed
             Keywords:               |               Blocked By:
  zimg,zscale,transfer               |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by rminnema):

 Replying to [comment:14 Balling]:
 > Fixed in 42289d5eaf3e938f0969aaf58c81550c0aed8f5e, but please test,
 build will be here soon https://github.com/BtbN/FFmpeg-Builds/

 It seems to be working fine for me now as well. The same sample webm I
 posted here earlier now does tone mapping with no issues.

 Thanks for your help.
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Ticket URL: <https://trac.ffmpeg.org/ticket/9811#comment:16>
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