[FFmpeg-trac] #9376(avfilter:closed): Wrong conversion from flat to equirectangular

[FFmpeg]

#9376: Wrong conversion from flat to equirectangular
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             Reporter:  jumpjack  |                    Owner:  (none)
                 Type:  defect    |                   Status:  closed
             Priority:  normal    |                Component:  avfilter
              Version:  4.3.2     |               Resolution:  invalid
             Keywords:            |               Blocked By:
             Blocking:            |  Reproduced by developer:  0
Analyzed by developer:  0         |
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Comment (by jumpjack):

 It's a bug, please try the script.
 And it does not depend on order of yaw and pitch.

 My script does this:
 1) Fisheye --> equirectangular
 2) Rotate
 3) Extract cropping in flat projection
 4) Flat cropping --> equirectangular cropping
 (user edit)
 5) Overlay equirectangular cropping to original equirectangular image
 6) Rotate back the new equirectangular image to original position '''==>
 BUG! A 2.1 degrees roll is added to the rotation'''

 But if you don't want to fix it is does not matter, the image is still
 there and the subject is unmodified (apart from user intervention), it's
 just erroneously rotated, hence it is a minor bug.
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/9376#comment:7>
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