[FFmpeg-trac] #10987(avfilter:new): Blend video filter *_expr options don't handle store and load functions correctly.

[FFmpeg]

#10987: Blend video filter *_expr options don't handle store and load functions
correctly.
-------------------------------------+-------------------------------------
             Reporter:  Fallan       |                    Owner:  (none)
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:  avfilter
              Version:  git-master   |               Resolution:
             Keywords:  "blend       |               Blocked By:
  filter" "store and load" st()      |
  ld()                               |
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Comment (by Marton Balint):

 This is kind of expected if you are using multiple threads with the blend
 filter. If you specify threads=1 as an additional parameter of blend, it
 will work as expected.
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Ticket URL: <https://trac.ffmpeg.org/ticket/10987#comment:6>
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