On average, with 32gb you can store around 9000 photos or 320 minutes of video. However, this strongly depends on the type of trailcamera, the contrast and (set) image quality of your photo/video, the length of your video and whether the photo/video was taken during the day or night. Colourful daytime images require more memory than the grey-tinted nighttime images. For optimal use of your storage, you can pre-select the minimum number of megapixels / video resolution and choose a minimum video length in the settings of the camera trap.