ufo?

this is what i caught with my camcorder one cold night. as you can see there is an object flying very slowly over my house and i assure you with no sound of a jet engine. the camera is shaking because i am holding it upwards and trying to zoom in and out to try and get a good shot of it so i apologise for the quality, and i am not a qualified camera man. friends have had a look at it on youtube and some have said its just a normal plane and others have said its probably military. the only reason why i took video footage of it is because there is no sound coming from this object and i can distingush between something thats a plane and something thats strange, and this to me is strange. this isn't the first time that i have seen this object, actually there are between 3 to 5 of them (with strobing lights) that appear during the early hours of the morning when im going to work and also during the night which is when i took this video footage. they have been appearing in my area for over a year now, every morning and night. please feel free to tell me im going mad and anything else you care to tell me. thankyou.