[FFmpeg-trac] #4403(undetermined:new): The early part of video after conver become fuzzy

[FFmpeg]

#4403: The early part of video after conver become fuzzy
-------------------------------------+-------------------------------------
             Reporter:  needkane     |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:               |                  Version:
  undetermined                       |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Video :
 http://s3-us-west-2.amazonaws.com/qiniu-bs/vague.mp4

 Command :
 ffmpeg -loglevel warning -i vague.mp4 -movflags faststart -coder 0 -g 30
 -qmax 51 -partitions +parti4x4+partp8x8+partb8x8 -rc_eq
 'blurCplx^(1-qComp)' -qmin 10 -trellis 1 -pix_fmt yuv420p -preset
 superfast -level 3.0 -codec:s mov_text -b:v 60608 -codec:v libx264
 -pix_fmt yuv420p -codec:a libfaac -map_metadata 0:g -vf
 [in]scale=trunc'(in_w/2)*2:trunc(in_h/2)'*2[scale2] -f mp4 -y result.mp4


 I found the early part of result is vague,i need your help

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Ticket URL: <https://trac.ffmpeg.org/ticket/4403>
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