Quite interesting the HitPaw program,I think I'll give it a monthly chance to verify how the job is done then decide. The fact is at the moment I only need to remove from one video only and I dont know if or when I need it again,that's why I was looking for a free method (which I didnt find as they are either unconvincing,too difficult or worsening the video).
Thanks a lot for your advice show-Zi,will let you know.
PS- Having used a lot comodo firewall in the past I appreciate the similitude you made,although i dont find it(editing) all that funny!