Currently Being ModeratedNov 7, 2012 11:41 AM (in response to ALMORAIKHI)
You don't need to use Compressor. In FCP, Share>You Tube and then choose the quality setting you want.
Alternatively you can use Compressor to give you more control over your settings. If so, choose Share and either export a master file and bring that into Compressor…or SHare>Add Destination>Compressor settings.