The present invention discloses an image capture method comprises capturing a sequence of image frames; providing the sequence of image frames for preview along a first path and buffering the sequence of image frames into a buffer along a second path separately and concurrently; receiving an input command via an input interface unit; and in response to the input command, extracting a portion of the sequence of image frames from the buffer and encoding the portion of image frames along the second path; and storing the portion of encoded image frames in a memory unit.