For Logitech video effects, you will need to enter the logitech webcam settings and add ooVoo as an application that can use its video effects. To do that:
· Open Logitech's webcam manager window (located in the tray icon) and click on Settings
· Go to Application Preference tab
· Click on the Settings button under 'Video effects application support'
· Click to add ooVoo.exe file located under C:\Program Files\ooVoo
· After saving the changes you will need to restart the computer.