Open Preferences by either selecting the gear icon on the top right of your desktop application or by going to Tools on the taskbar and selecting Preferences. Once there, select the Video Icon on the left panel. This will take you to the video settings. If it’s not already there, click on the Quality tab at the top of the Preferences window. Under the resolution, select Low resolutions, Standard Resolution, or High Resolution as you wish. Click OK to save your changes and close the Preferences window.