[FFmpeg-trac] #7752(ffplay:new): Rotation metadata is not honored by crop filter in ffplay

[FFmpeg]

#7752: Rotation metadata is not honored by crop filter in ffplay
---------------------------------+----------------------------------
             Reporter:  pekarna  |                     Type:  defect
               Status:  new      |                 Priority:  normal
            Component:  ffplay   |                  Version:  4.1
             Keywords:  rotate   |               Blocked By:
             Blocking:           |  Reproduced by developer:  0
Analyzed by developer:  0        |
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 Summary of the bug:

 Using the 'crop' filter,
 the `ffplay` preview of cropping the videos that were rotated just by
 setting the metadata behaves as if there was no rotation.

 That means: If I want to crop a rotated video,
 `ffplay` takes the cropping parameters as if it was not rotated;
 {{{
 ffplay -i VIDEO-rot.mp4 -vf
 'crop=in_w*(1-0.5-0):in_h*(1-0.31-0.1):in_w*0.5:in_h*0.31'
 }}}
 while the actual cropping takes them properly.
 {{{
 ffmpeg -i VIDEO-rot.mp4 -filter:v
 'crop=in_w*(1-0.5-0):in_h*(1-0.31-0.1):in_w*0.5:in_h*0.31' -c:a copy
 VIDEO-cropped.mp4
 }}}



 How to reproduce:

 1) Have an MP4 video
 2) Rotate it with metadata:
 {{{
 ffmpeg -i "$INPUT" -metadata:s:v rotate="180" -codec copy "VIDEO-rot.mp4"
 }}}

 3) Preview cropping with `ffplay` and do the cropping with `ffmpeg` and
 notice that the crop filter params need to be rotated.

 {{{
 % ffmpeg -i input ... output
 ffmpeg version 4.1-static https://johnvansickle.com/ffmpeg/
 }}}

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Ticket URL: <https://trac.ffmpeg.org/ticket/7752>
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