Patent ID: 9369508
Filing Date: 2016-06-14
CPC Classification: H04L,H04N

Claim Text:
1. A method of transmitting an HTTP stream comprising: generating a plurality of segments by dividing video stream by a time unit; generating a media information file including Universal Resource Locator (URL) information of the plurality of segments and transmitting the media information file to a client; constructing, for a first representation, a plurality of segments with a first bit rate of scalable video coding; constructing, for a second representation, a plurality of segments with a second bit rate, which is higher than the first bit rate, of the scalable video coding; constructing, for a third representation, a plurality of segments with a third bit rate, which is higher than the second bit rate, of the scalable video coding; receiving a request for transmitting selected segments of specific representation from a client according to a current network environment sensed by the client; wherein the client parses the media information file, selects the segments of the specific representation suitable for the network environment by referring the parsed information, and generates the request for the selected segments of the specific representation; and transmitting a scalable video coding stream that includes segments of at least one of the first, and the second, and the third representations, in response to the request; wherein the third bit rate is double of the first bit rate and the second bit rate is a mean value of the first bit rate and the third bit rate.