Because even if you compress a video ever so slightly, there will still be some quality loss. Is it possible to compress videos without visible quality loss?Ĭompressing videos on Mac is a balancing act. Whatever data can be stripped out of each frame is taken away, making the overall file smaller. Since a video is just a series of photos rapidly playing in succession, the process is actually very similar to compressing an image. What is compression and how does it work?īefore you just compress all of your videos, it's important to understand what it is and what happens to a video when it's compressed. And with no shortage of options, figuring out where to start with it all can feel overwhelming.īut don't worry, if you keep reading, this article will explain video compression and how to compress a video on a Mac. So, whether you're running out of space on your hard drive or you're trying to send a movie that's too large, compressing videos is a great way to reduce their file size. It's not a surprise that the largest files on your Mac are probably your videos. It’s an app that will scan your Mac for duplicate files and then lets you quickly delete them just by clicking the Smart Cleanup button.