A video playback method, wherein the method is applied to smart glasses, and the method comprises: acquiring a scene video of an external scene; extracting a target video from the scene video when key point information exists in the scene video, wherein the target video of a preset time length is acquired with a corresponding occurrence time of the key point information being taken as a reference point; and playing back the target video on a lens of the smart glasses; after the acquiring a scene video of an external scene, further comprising: automatically determining the key point information according to characteristic information in the scene video through image analysis technology and/or audio analysis technology, wherein the characteristic information comprises at least one of an image characteristic or a sound characteristic, and the characteristic information is information corresponding to a target behavior in a current sports event; wherein the playing back the target video on a lens of the smart glasses, comprises: determining a key point type corresponding to the key point information according to characteristic information in the scene video; determining a playback speed of the target video according to the key point type and a preset playing rule; and playing back the target video on the lens of the smart glasses according to the playback speed. acquiring a scene video of an external scene; extracting a target video from the scene video when key point information exists in the scene video, wherein the target video of a preset time length is acquired with a corresponding occurrence time of the key point information being taken as a reference point; and playing back the target video on a lens of the smart glasses; after the acquiring a scene video of an external scene, further comprising: automatically determining the key point information according to characteristic information in the scene video through image analysis technology and/or audio analysis technology, wherein the characteristic information comprises at least one of an image characteristic or a sound characteristic, and the characteristic information is information corresponding to a target behavior in a current sports event; wherein the playing back the target video on a lens of the smart glasses, comprises: determining a key point type corresponding to the key point information according to characteristic information in the scene video; determining a playback speed of the target video according to the key point type and a preset playing rule; and playing back the target video on the lens of the smart glasses according to the playback speed. automatically determining the key point information according to characteristic information in the scene video through image analysis technology and/or audio analysis technology, wherein the characteristic information comprises at least one of an image characteristic or a sound characteristic, and the characteristic information is information corresponding to a target behavior in a current sports event; wherein the playing back the target video on a lens of the smart glasses, comprises: determining a key point type corresponding to the key point information according to characteristic information in the scene video; determining a playback speed of the target video according to the key point type and a preset playing rule; and playing back the target video on the lens of the smart glasses according to the playback speed. determining a key point type corresponding to the key point information according to characteristic information in the scene video; determining a playback speed of the target video according to the key point type and a preset playing rule; and playing back the target video on the lens of the smart glasses according to the playback speed.