| 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. |
