[FFmpeg-user] removing logo

[Eng.Hany Ahmed]

Helloi have videos have logo in the top of the corner i want make   pixelate blur for this logo like in the photowhat code i can using to make this in the video 
i tried to using water mark  but i have 2 problems 1- it's take many resources of the cpu when re encoding and i can use copy method 2 -  it's very bad view with the new logo 
the command line " ffmpeg -i  "kides.ts" -vprofile baseline -threads 5   -bufsize 2300k -c:v libx264 -b:v 1200k -preset fast -acodec aac -ar 44100 -ab 128k -strict experimental -vf "movie=/root/watermarklogo.png [watermark]; [in][watermark] overlay=10:10 [out]" -f flv kids.flv "
any one can help me please ?

   Best Regards   Eng.Hany Ahmed