METHOD AND APPARATUS FOR VIDEO CODING AND DECODING

摘要

Various methods, apparatuses and computer program products for video encoding and decoding. In some embodiments a data structure is encoded that is associated with a base-layer picture and an enhancement-layer picture in a file or a stream comprising a base layer of a first video bitstream and/or an enhancement layer of a second video bitstream, wherein the enhancement layer may be predicted from the base layer; and into the data structure information that is indicative of whether the base-layer picture is regarded as an intra random access point picture for enhancement layer decoding is also encoded. If the base-layer picture is regarded as an intra random access point picture for enhancement layer decoding; the data structure information is further indicative of the type of the intra random access point IRAP picture for the decoded base-layer picture to be used in the enhancement layer decoding.

主权项

1. A method comprising:
decoding a data structure that is associated with a base-layer picture and an enhancement-layer picture in a file or a stream comprising a base layer of a first video bitstream and/or an enhancement layer of a second video bitstream, wherein the enhancement layer may be predicted from the base layer; decoding from the data structure first information that is indicative of whether the base-layer picture is regarded as an intra random access point picture for enhancement layer decoding; and provided that the base-layer picture is regarded as an intra random access point picture for enhancement layer decoding, decoding from the data structure second information that is indicative of the type of the intra random access point picture for the decoded base-layer picture to be used in the enhancement layer decoding.