[Cin] ffmpeg 6.1 is out!

[Phyllis Smith]

Maybe O/S specific, but zoneplate worked for me using ffmpeg filters url
example.  See attached and it is kind of cute.

(Note x Phyllis: the new "zoneplate" filter gives no error but if you
> try to use it the error comes up:
> err: Function not implemented)
>
>
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