r22127: Fix vqscale description to match at least somewhat the code.
r22137: formatting/wording
r22138: wording/formatting
r22139: Try to clarify scale filter usage hint.
remove duplicate word
git-svn-id: svn://svn.mplayerhq.hu/mplayer/trunk@22142 b3059339-0415-0410-9bf9-f77b7e298cf2