This editing feature in Photos will save you tons of storage.

If you crop a video and select “Save Video,” the storage size of your video won’t decrease. You have to select, “Save Video as New Clip” to get a reduction in file size, and then delete the original video.

The “Save Video” option crops your video, but still retains the whole video in case you change your mind. When you go back to editing the video under the “crop” option, you will see the entire video with your cropped selection. I had a 10GB slow-mo video that was 42 minutes long, but I only needed 1 minute from it. After cropping my video and selecting “Save Video,” the file size was still 10GB. I was sure I didn’t need all that extra footage, so I selected, “Save Video as New Clip,” and then deleted the original 10GB video.

My new file size? 342MB.