[FFmpeg-trac] #11448(swscale:new): "swscale" ignores "param0"/"param1"?

[FFmpeg]

#11448: "swscale" ignores "param0"/"param1"?
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             Reporter:  b7j6abhi3q  |                    Owner:  (none)
                 Type:  defect      |                   Status:  new
             Priority:  normal      |                Component:  swscale
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  0
Analyzed by developer:  1           |
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Comment (by b7j6abhi3q):

 I should have mentioned the same command works in 7.1, more detailed
 example in which case the difference is also visually obvious if output to
 file:

 ffmpeg version n7.1-184-gdc07f98934-20250206
 {{{
 % ffmpeg -i carphone_qcif.y4m -vf scale=1440:1080:flags=bicubic,setsar=1
 -f hash -
 SHA256=f8d1a22960bd14de8933cdd55995dbfe553ab0d3e7fde78c307e7bd92b08f60c
 % ffmpeg -i carphone_qcif.y4m -vf
 scale=1440:1080:flags=bicubic:param0=1:param1=0,setsar=1 -f hash -
 SHA256=6556d0e7f59dde9d7c73ff2f9632bfbc388806f0022146a994ea24852b01506
 % ffmpeg -i carphone_qcif.y4m -vf
 scale=1440:1080:flags=bicubic:param0=0:param1=0,setsar=1 -f hash -
 SHA256=90261f5618ceba055a46a5e6d18c422d36802576df554795816819e31ab3affb
 }}}
 ffmpeg version N-118431-g6da82b4485-20250206
 {{{
 % ffmpeg -i carphone_qcif.y4m -vf scale=1440:1080:flags=bicubic,setsar=1
 -f hash -
 SHA256=f8d1a22960bd14de8933cdd55995dbfe553ab0d3e7fde78c307e7bd92b08f60c
 % ffmpeg -i carphone_qcif.y4m -vf
 scale=1440:1080:flags=bicubic:param0=1:param1=0,setsar=1 -f hash -
 SHA256=f8d1a22960bd14de8933cdd55995dbfe553ab0d3e7fde78c307e7bd92b08f60c
 % ffmpeg -i carphone_qcif.y4m -vf
 scale=1440:1080:flags=bicubic:param0=0:param1=0,setsar=1 -f hash -
 SHA256=f8d1a22960bd14de8933cdd55995dbfe553ab0d3e7fde78c307e7bd92b08f60c
 }}}
 sample from https://media.xiph.org/video/derf/y4m/carphone_qcif.y4m

 The problem occurred with every input video that I tested and also with
 the lanczos filter.
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Ticket URL: <https://trac.ffmpeg.org/ticket/11448#comment:4>
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