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CENE 150 Introduction to Environmental Engineering

A guide for CENE 150 students to help with their essays and video presentation using library resources

Editing Video


iMovie is a video editing software application developed by Apple and is available on all Cline Library iMacs. iMove allows you to easily upload video clips from your camera, arrange your clips using a timeline, add special effects and transitions, add titles and credits, and perform simple sound editing.

Need to learn how to use iMovie? Click the image below to view a Udemy iMovie training course (available to NAU affiliates). 


iMovie course from Udemy screenshot

Adobe Premiere Pro

Adobe Premiere Pro is the industry standard video editing program and is available on all Cline Library computers or through the NAU remote apps at Premiere Pro is more complicated than iMovie but has advanced features to create professional-level videos.

Need to learn how to use Premiere Pro? Click the images below to view a Udemy Premiere Pro training course (available to NAU affiliates). 


Premiere Pro course from Udemy screenshot

Chroma Keying

Chroma keying is a video editing process more commonly known as "green screening." The term "green screen" refers to the colored background used during video recording that is later removed from the shot and replaced with a different background. This is usually a single colored backdrop, which can be any color, but is usually bright green because it is the color furthest away from human skin tones (blue screens were frequently used in the early days with film, and might still be used in certain cases). Chroma keying is the actual technique of layering, or compositing, two videos based on color hues (i.e. green hues in the background) in post-production using video editing software. When the green screen background has been keyed, it will be fully transparent. Then you can fill in that transparent area with a different image or video. 

Want to learn how to use green screens for chroma keying? Check out the Premiere Pro training video from Udemy (available to NAU affiliates). 

Video Assets

Want to add some extra audio or video elements to your video project to add character and make your project look more professional? Then Creative Commons assets are for you! Unlike most audio and video files you find online, Creative Commons files are free and can be used for educational purposes without any pesky copyright issues. This is because the creators of these assets specifically chose to make their files open and available for use. Just be sure that the files you use are actually listed as Creative Commons! Visit to learn more about the different types of Creative Commons licenses or check out the links below to find creative commons files that can easily be added to your video.


Creative Commons Video LinksCreative Commons Logo