Could some one tell me how to change the recorded format of a webcam from 'US' to 'AVI'. I can convert stills from 'JPG' to 'TIF' or other but can not work out how to change video footage from my Logitech webcam to another format. How does this alteration work. Registax does not except 'US' format. I have some great film footage of Jupiter caught on the 20th of this month which I can not process.