The early part of video after convert become fuzzy

[Kane]

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

[Kane]

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

Result:
​http://s3-us-west-2.amazonaws.com/qiniu-bs/result.mp4

I want to know why,and how to resolve it

[Michael Niedermayer]

is this a regression ?
is this reproduceable with git master ?

[Kane]

Replying to michael:

is this a regression ?
is this reproduceable with git master ?

I can't understand

[Carl Eugen Hoyos]

Please test current FFmpeg git head and please provide the command line that allows to reproduce your issue together with the complete, uncut console output to make this a valid ticket. Do not use -loglevel warning when reporting issues here.