An embodiment method includes: acquiring a uniform resource identifier URI of a first picture selected by a user; acquiring a URI of a picture to be buffered in accordance with the URI of the first picture; and sending the URI of the first picture and the URI of the picture to be buffered to a media renderer, so that the media renderer acquires the first picture according to the URI of the first picture, and displays the first picture, and acquires, the picture to be buffered in accordance with the URI of the picture to be buffered, and buffers the picture to be buffered.