[FFmpeg-trac] #6294(avfilter:open): gif frame delay dropped from last frame when scale filter is used

[FFmpeg]

#6294: gif frame delay dropped from last frame when scale filter is used
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             Reporter:  okor        |                    Owner:
                 Type:  defect      |                   Status:  open
             Priority:  normal      |                Component:  avfilter
              Version:  git-master  |               Resolution:
             Keywords:  fps         |               Blocked By:
             Blocking:              |  Reproduced by developer:  1
Analyzed by developer:  0           |
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Comment (by RedError):

 It also happens with no filter.
 Input:
 [[Image(https://i.ibb.co/QKBjwc9/onetwothree.gif)]]
 60ms, 120ms, 20ms
 {{{
 ffmpeg -i "onetwothree.gif" "onetwothree tough.gif" -y
 }}}
 Output:
 [[Image(blob:https://imgur.com/4ac4d0d4-6ea5-450c-8c0f-e4ec9b89f1c1)]]
 60ms, 120ms, 120ms
 Last frame of gif copies duration of penultimate frame.

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Ticket URL: <https://trac.ffmpeg.org/ticket/6294#comment:11>
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