STREAM ACCESS FOR ADAPTIVE STREAMING OF VIDEO

摘要

There are provided mechanisms for creating multiple representations of a video sequence. The method comprises creating (S1) a first representation of the video sequence with a periodic access point structure, wherein the access point serves as a random access point or facilitates switching between different representations of the video sequence. The method further comprises creating (S2) a second representation of the video sequence with a sparser access point occurrence compared to the access point occurrence in the first representation and with an aperiodic or periodic access point structure, wherein the second representation has a higher quality and/or higher bitrate than the first representation. The method also comprises (S3) providing information on positions and/or time instances of switching points for the created representations, wherein the switching points facilitate switching from the first representation to the second representation.