Trick modes for network streaming of coded multimedia data

摘要

In one example, a device for retrieving multimedia data, the device comprising one or more processors configured to analyze information of a manifest file for multimedia content, wherein the information of the manifest file indicates that at least one representation of the multimedia content includes a temporal sub-sequence, determine one or more locations of data for the temporal sub-sequence, and submit one or more requests for the data for the temporal sub-sequence.

主权项

1. A method of retrieving multimedia data, the method comprising:
analyzing, by a client device, information of a manifest file for multimedia content, wherein the information of the manifest file indicates that at least one representation of the multimedia content includes a temporal sub-sequence, wherein the representation includes a bitstream having a plurality of segments formed as individually retrievable files having respective uniform resource locators (URLs), wherein each of the segments of the representation includes a respective random access point (RAP) picture and a respective plurality of non-RAP pictures, wherein the temporal sub-sequence is formed by at least some of the RAP pictures of the segments and none of the non-RAP pictures, and wherein the manifest file is separate from each of the plurality of segments; determining, by the client device, byte ranges of the segments corresponding to locations of the RAP pictures for the temporal sub-sequence in the segments, wherein the byte ranges are each defined by a respective starting byte corresponding to a beginning of the RAP picture of the corresponding segment and an ending byte corresponding to an end of the RAP picture of the corresponding segment; and submitting, by the client device, requests for the data for the temporal sub-sequence, wherein the requests comprise partial GET requests that specify, for each of the segments, the URL of the segment, the starting byte of the RAP picture of the segment, and the ending byte of the RAP picture of the segment.