In this video from SocialMacbook we learn how to get HD in ScreenFlow. He teaches how to get the best quality you can get when using ScreenFlow. When you finish your video, go to File, Export, and save as whatever you want. Then change the preset to Web - High (Best Quality). In dimensions, click 100% and click export. Depending on the time of your video the export time will vary. Using these steps you will get great quality for ScreenFlow videos and they will look great on YouTube. For more information visit his website at Blakeology.