[FFmpeg-trac] #4298(avfilter:open): zoompan filter creates shaky image

[FFmpeg]

#4298: zoompan filter creates shaky image
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             Reporter:  slhck        |                    Owner:  (none)
                 Type:  defect       |                   Status:  open
             Priority:  normal       |                Component:  avfilter
              Version:  git-master   |               Resolution:
             Keywords:  zoompan      |               Blocked By:
  swscale                            |
             Blocking:               |  Reproduced by developer:  1
Analyzed by developer:  0            |
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Comment (by Gyan):

 Using the other swscale algorithms made no difference to the jitter in the
 output.

 What's needed is anti-aliasing.
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Ticket URL: <https://trac.ffmpeg.org/ticket/4298#comment:13>
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