[FFmpeg-trac] #163(avdevice:open): png output creates artifacts or blank image with x11grab input

[FFmpeg]

#163: png output creates artifacts or blank image with x11grab input
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Reporter:  llogan        |       Owner:
    Type:  defect        |      Status:  open
Priority:  minor         |   Component:  avdevice
 Version:  git-master    |  Resolution:
Keywords:  x11grab, png  |  Blocked By:
Blocking:                |  Reproduced:  1
Analyzed:  1             |
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Changes (by cehoyos):

 * analyzed:  0 => 1
 * component:  undetermined => avdevice


Comment:

 But am I correct that x11grab should not assume a useful value for the
 alpha channel of bgra?

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Ticket URL: <https://avcodec.org/trac/ffmpeg/ticket/163#comment:4>
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