Step by Step Instructions:
Step 1: Go to CallofDuty.com and register an account
Step 2: Go to CallofDuty.com/Theater and link Gamertag/ PSN ID
Step 3: Go back to CallofDuty.com/Theater and link YouTube account
Step 4: Turn on Xbox 360/PS3 and go into Theater
Step 5: Select a game, make a 30 second or less clip
Step 6: Name, save, and upload clip to fileshare
Step 7: Select clip from fileshare and choose "Select for Playback"
Step 8: Select "Render Clip"
Step 9: Check your YouTube account and CallofDuty.com/Theater for clip
but be patient
Step 10: Go to KeepVid.com and copy/paste URL of Youtube video