rotat and save in YV12 Encorer

[hurvan]

Hi, I am a newbee and in this forum I found out how to rotat a video in windows (Jan Gruuthuse). I have by try and error found out that Video Output YV12 Encoder give me what I want and saved videos are perfect but when I try to save the rotated video and try to play it on Irfanview, Real player or Winows Media Player I get hundreds of almost horisontal stripes in the video.  I have tried and error in different ways to save it but get a blank or that striped video. Please I need help.