Video sharing method and system, video processing system and client side

The invention provides a video sharing method and system, a video processing system and a client side. When a live broadcast source unit receives a video acquiring request sent by the client side, the live broadcast source unit responds to the client side with an indexed file address and media file address corresponding to the video acquiring request, so that the client side shares the indexed file address and media file address or inquires whether a corresponding indexed file and media file exist in a VOD source unit according to the indexed file address and media file address; if yes, the client side downloads the corresponding indexed file and media file; if not, the client side inquires and downloads the corresponding indexed file and media file in the live broadcast source unit. By the adoption of the video sharing method and system, the video processing system and the client side, video files can be processed; by adding the VOD source unit to store the indexed file and media file, the download pressure