Abstract: A media projection method, a media projection device, a control terminal, and a cloud server are disclosed. The media projection method includes: establishing a playback control channel between a control terminal and a media projection device; sending, by the control terminal, a media playback request message to the media projection device over the playback control channel to cause the media projection device to enable a service of playing a corresponding media resource according to the media playback request message. The present disclosure can rapidly realize multi-screen interaction of third-party videos.

Abstract: Embodiments of the present invention provide an online media data conversion method, an online video playing method and a corresponding device. A terminal only needs to parse a segment file and a description file, and the segment file may include a plurality of frames, so the present invention has higher transmission efficiency when compared with the prior art, and is capable of playing by dragging at a current location faster than that in the prior art, thereby providing better experience for a user.