[FFmpeg-user] noising and quaking picture

[Eng.Hany Ahmed]

hello
i have stream from stb channels i found the picture noising and quaking and it's very appearing in sports channels and text titles after made transcoding  how i can fix this problem ?the samples photos 
http://s24.postimg.org/jj2iccf5x/vlcsnap_error178.png

http://s24.postimg.org/nzq9xa405/vlcsnap_error320.png

http://s24.postimg.org/ikm5a21tx/vlcsnap_error361.png

http://s24.postimg.org/x7n3rq0g5/vlcsnap_error477.png

http://s24.postimg.org/pvd28fsud/vlcsnap_error822.png

http://s24.postimg.org/qjlwrdrk5/vlcsnap_error954.png

http://s24.postimg.org/6lan2qw91/vlcsnap_error973.png 

   Best Regards ,