Abstract: A method for improving video on demand (VOD) service reliability includes: selecting a first VOD server to provide VOD services for a user terminal; and reselecting a second VOD server according to the current running status of each VOD server and a policy to continue providing VOD services for the user terminal after receiving a VOD request re-initiated by the user terminal. The present invention avoids blind switchover of VOD services, greatly improves the switchover success ratio, and ensures the quality of the VOD services provided for users.

Abstract: A method for switching a digital TV program and a digital TV device are provided. The method includes: retrieving a prestored identifier of a target VOD program and a prestored presentation position associated with the identifier of the target VOD program when a program switching from a current live program to the target VOD program is required; and performing the program switching by using the identifier of the target VOD program and the presentation position.

Abstract: A method of streaming media, includes: a digital terminal visits an Electronic Program Guide (EPG) server, the EPG server obtains the capability parameters of the digital terminal and a streaming media program list that matches the capability parameters of the digital terminal, and the EPG server sends the streaming media program list to the digital terminal so that a user may choose a program; after the program is chosen by the user, the digital terminal initiates a redirecting request to the request redirector; after receiving the redirecting request, the request redirector obtains the capability parameters of the digital terminal and selects a matching streaming media server to serve the digital terminal according to the capability parameters of the digital terminal and the program chosen by the user. The present invention also provides a streaming media on-demand system, including an EPG system, a redirector.