Marton Balint via ffmpeg-devel (HE12026-01-15):
> PR #21482 opened by Marton Balint (cus)
> URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21482
> Patch URL: https://code.ffmpeg.org/FFmpeg/FFmpeg/pulls/21482.patch
> 
> This reverts commit fcc33ada47e594d6b35b71c4a998af796f56492e.
>     
> It breaks playback of files with changing aspect ratio in ffplay, such as 
> [1], because the filter chain is initialized with the initial aspect ratio, 
> so any change is overwritten.
> 
> Michael already reported this issue at the time of patch submission [2], but 
> it was applied anyway.
> 
> Ideally we could reinitialize the filter chain, but we never wanted to do 
> that just for an aspect ratio change, because a filter chain reinitialization 
> in the middle of playback / encoding can cause even worse issues. So I think 
> it is better to just revert this.

Hi. Agree with all that. Thanks.

Regards,

-- 
  Nicolas George
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