Patent ID: 11962828
Assignee: DOLBY INTERNATIONAL AB
Field: nan (nan)
Classification: CPC nan | IPC H

Claim 0:
1. Method for adaptive streaming of media content with bitrate switching, the media content comprising a plurality of consecutive media segments, the method comprising, at a media streaming server:
transmitting a segment of the media content encoded in a first coding mode having a first bitrate;
receiving from a client device an indication for a coding mode switch to a second coding mode having a second bitrate, the second bitrate being different from the first bitrate, and in response transmitting a transition segment for transitioning between the first coding mode and the second coding mode, wherein the transition segment comprises a portion of the media content encoded in a transition coding mode, the transition coding mode enabling a smooth transition between the first and second coding mode; and
transmitting another segment of the media content encoded in the second coding mode;
wherein the media content comprises audio or video content, and wherein the first coding mode corresponds to a first audio or video codec mode of the media content and the second coding mode corresponds to a second audio or video codec mode of the media content, the second audio or video codec mode being different from the first audio or video codec mode,
wherein the first and second coding modes comprise parametric data for controlling the encoding, and wherein in the transition coding mode the parametric data is gradually changed from the parametric data of the video or audio codec mode of the media content encoded in the first coding mode to parametric data of the video or audio codec mode of the media content encoded in the second coding mode, the parametric data corresponding to parametric data of the audio or video codec mode the media content is encoded in, wherein:
the first coding mode corresponds to a 3D video codec mode and the second coding mode corresponds to a 2D video codec mode, wherein the parametric data of the 3D video codec mode correspond to spatial positions of 3D objects used for generating the first coding mode and the parametric data of the 2D video codec mode describe corresponding object positions being projected onto a 2D plane representing 2D objects corresponding to the second coding mode, and wherein in the transition coding mode the 3D objects of the first coding mode are gradually moved towards a front of a 2D spatial space; or
the first coding mode corresponds to an immersive 3D audio codec mode and the second coding mode corresponds to a 5.1 surround sound or stereo codec mode, wherein the parametric data of the immersive 3D audio codec mode correspond to individual audio objects with metadata indicative of their position and movement in 3D space and the parametric data of the 5.1 surround sound or stereo codec mode correspond to respective speaker positions, and wherein in the transition coding mode the audio objects are gradually moved to the respective positions of the speakers, wherein, if an audio object is located between two speaker positions, it is split up and the respective parts are moved to the respective speaker positions.