Thanks! Yes, Final Cut X has that tool. My Final Cut X version was about 1 year old. I had problems with that tool. When I used that and then set Video Quality Optical slow, some errors appeared on that clip. The red line did not dissapear. When I send that footage to Compressor, I could not succeed to convert any file. When I took that clip away, there was no problem anymore. I think Apple had bug on Final Cut X.
But yesterday I updated Maverick in my computer and now I have lates version of FCX. There is no problems anymore. So this is tip, if somebody has similar problems. Now I can use that tool well.