chyron8472 said: can any of you tell me what Constant Quality value I should use?

That depends on what you perceive as good quality. It varies from person to person. You'll have to encode a few test clips and see. Useful values range from 16 (higher quality) to 22 (lower quality). Most people agree that a CRF of 18 looks really good and there is little point in going lower, so if you want a quick answer, use that. This sort of question belongs in the technical help section, as it's not really specific to Harmy's release.