Abstract: A method for manufacturing a core-shell coaxial gallium nitride (GaN) piezoelectric nanogenerator is provided. A mask covering a center part of a gallium nitride wafer is removed. An electrodeless photoelectrochemical etching is performed on the gallium nitride wafer to form a primary GaN nanowire array on a surface of the gallium nitride wafer. A precious metal layer provided on the surface of the gallium nitride wafer is removed and an alumina layer is deposited on the surface of the gallium nitride wafer to cover the primary GaN nanowire array to obtain a core-shell coaxial GaN nanowire array. A first conductive layer is provided on a flexible substrate to which the core-shell coaxial GaN nanowire array is transferred. A second conductive layer is provided at a top end of the core-shell coaxial GaN nanowire array, and is connected to an external circuit to obtain the core-shell coaxial GaN piezoelectric nanogenerator.

Abstract: A video processing method includes: receiving a video stream from a camera component; converting the video stream into at least one first data packet, where the at least one first data packet is independently encoded or decoded; and storing a first data packet obtained in a first reporting cycle as a first video clip.

Abstract: A video processing method, apparatus and a terminal device are provided, which relate to the field of video processing technologies. The method includes: when detecting in a video recording process that a user enables a video editing function, presenting a recorded original video stream in a form of a video frame; determining a to-be-edited video frame based on a video frame selection operation that is performed by the user on the video frame; performing video editing on the to-be-edited video frame based on a video frame editing operation input by the user, to generate an edited video stream; and generating a target video stream based on the edited video stream and the original video stream. According to this application, live video editing flexibility can be improved.