[FFmpeg-trac] #9633(undetermined:new): avgblur ignores resized input

[FFmpeg]

#9633: avgblur ignores resized input
-------------------------------------+-------------------------------------
             Reporter:  Jozef        |                    Owner:  (none)
  Chutka                             |
                 Type:  defect       |                   Status:  new
             Priority:  normal       |                Component:
                                     |  undetermined
              Version:  git-master   |               Resolution:
             Keywords:  avgblur      |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
Description changed by Jozef Chutka:

Old description:

> When the input of `avgblur` filter is resized in time, the `avgblur`
> would keep blurring just the original area (size).
>
> In this example input is resized from 100x100 to 200x200 within 5 frames,
> however only 100x100 area is blurred in every frame.
>
> Also tried with `eval=frame` but `avgblur` doesnt seem to have the
> option.
>
> How to reproduce:
> {{{
> % ffmpeg -f lavfi -i color=size=200x200:rate=5:d=1 -i lines.png
> -filter_complex
> "[1]setpts=N/5/TB,fps=5,tpad=stop_mode=clone:stop_duration=1,scale=iw+n*20:-1:eval=frame,gblur=10,[0]overlay"
> -y out%%d.png
> }}}
>
> Tested with ffmpeg version 2022-02-07-git-04cc7a5548-full_build-
> www.gyan.dev

New description:

 When the input of `gblur` filter is resized in time, the `gblur` would
 keep blurring just the original area (size).

 In this example input is resized from 100x100 to 200x200 within 5 frames,
 however only 100x100 area is blurred in every frame.

 Also tried with `eval=frame` but `gblur` doesnt seem to have the option.

 How to reproduce:
 {{{
 % ffmpeg -f lavfi -i color=size=200x200:rate=5:d=1 -i lines.png
 -filter_complex
 "[1]setpts=N/5/TB,fps=5,tpad=stop_mode=clone:stop_duration=1,scale=iw+n*20:-1:eval=frame,gblur=10,[0]overlay"
 -y out%%d.png
 }}}

 Tested with ffmpeg version 2022-02-07-git-04cc7a5548-full_build-
 www.gyan.dev

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Ticket URL: <https://trac.ffmpeg.org/ticket/9633#comment:1>
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