1. A method, comprising: at an electronic device with a display, a camera, one or more processors, and memory: while in a first media acquisition mode for the camera: displaying a live preview on the display; while displaying the live preview, detecting activation of a shutter button at a first time; and in response to detecting activation of the shutter button at the first time: grouping a plurality of images acquired by the camera in temporal proximity to the activation of the shutter button at the first time into a first sequence of images, wherein the first sequence of images includes: a plurality of images acquired by the camera at a first resolution prior to detecting activation of the shutter button at the first time; a representative image that represents the first sequence of images and was acquired by the camera at a second resolution after one or more of the other images in the first sequence of images; and a plurality of images acquired by the camera at the first resolution after acquiring the representative image; wherein the second resolution is higher than the first resolution of the images in the first sequence other than the representative image.