Provided is a video playback mode switching method, a device, a program and a medium. Wherein a parasitic toolkit is pre-bound with a main application to provide a function of playing a video and switching a video playback mode in a user interface of the main application, the method comprising: according to a user-triggered video playback behavior, creating a first suspension window and setting a layout parameter of the first suspension window, and embedding a video player in the first suspension window; arranging and presenting the first suspension window according to the layout parameter of the first suspension window; playing a video stream provided by a server in the first suspension window while presenting the user interface of the main application; according to a behavior of switching the video playback mode triggered by the user, modifying the layout parameter of the first suspension window, and rearranging and presenting the first suspension window according to the modified layout parameter. This method overcomes the problems such as low performance and unsmooth mode switching etc., in the prior art caused by hiding or displaying a view, thereby enhancing the performance.