[FFmpeg-trac] #5303(avcodec:open): Support float in tiff

[FFmpeg]

#5303: Support float in tiff
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             Reporter:  Carl Eugen   |                    Owner:  (none)
  Hoyos                              |
                 Type:  enhancement  |                   Status:  open
             Priority:  wish         |                Component:  avcodec
              Version:  git-master   |               Resolution:
             Keywords:  tif          |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
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Comment (by Balling):

 I just learned that float TIFF is used for GeoTIFF including for EGM
 (Earth Gravitational Models, nice). For it to work the precision of float
 to int should be perfect, but of course best programs just use float.

 EGM is needed to calculate GNSS (GPS, for example) coordinates for your
 altitude.
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Ticket URL: <https://trac.ffmpeg.org/ticket/5303#comment:12>
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