Splicing wall window switching method and apparatus

Embodiments of the present invention disclose a splicing wall window switching method and apparatus, which solve the technical problems that a current method for switching a zooming scale and a position of a frame rate conversion module by determining whether an image is enlarged or reduced reduces a bandwidth in zooming of a splicing wall image, and that because of no fixed last-level frame buffer module, the phenomenon that a window will have a blurred screen instantly in a changing process of an image zooming ratio and window coordinates appears, thereby affecting user experience. The splicing wall window switching method disclosed by the embodiments of the present invention comprises: when the size of a window is changed, stopping inputting an image and writing the image into a frame rate conversion module, and writing a last frame of the image into an intermediate buffer; outputting and displaying the completely written last frame of the image from the intermediate buffer, and starting inputting a new im