Let me take a moment to thank you for posting on the HP Support Forums.
Maybe I can help.
I understand that you have a new HP Envy series laptop and the webcam quality is not good.
Please let me know the exact product model no. This link will help you to find the model no: http://hp.care/2bygf7l
Meanwhile, I suggest you to refer to this HP article to fix this issue. Please refer to the steps mentioned in "Determine the resolution of the webcam" and "Webcam image quality problems".
I sincerely hope this fixes the issue. Let me know how it goes. Cheers! :)