[FFmpeg-trac] #3317(undetermined:new): Drawtext+Alphamerge results in incorrect alpha value

[FFmpeg]

#3317: Drawtext+Alphamerge results in incorrect alpha value
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             Reporter:  jnvsor       |                    Owner:
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
              Version:  git-master   |  undetermined
             Keywords:               |               Resolution:
             Blocking:               |               Blocked By:
Analyzed by developer:  0            |  Reproduced by developer:  0
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Comment (by cehoyos):

 Please provide your failing command line together with the complete, uncut
 console output to make this a valid ticket.

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Ticket URL: <https://trac.ffmpeg.org/ticket/3317#comment:1>
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