[FFmpeg-trac] #3317(avfilter:open): 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:  open
             Priority:  normal      |                Component:  avfilter
              Version:  git-master  |               Resolution:
             Keywords:              |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
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Changes (by richardpl):

 * status:  new => open
 * component:  undetermined => avfilter
 * reproduced:  0 => 1


Comment:

 Forcing rgba as format after drawtext filter fixes issue.

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Ticket URL: <https://trac.ffmpeg.org/ticket/3317#comment:3>
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