Personal video recorder

摘要

A sequence of picture slices is encoded as reference slices and non-reference slices, wherein the reference slices include B slices, by forming, for each B slice, at least one data packet containing data values derived from brightness and color information pertaining to the slice. The data packet for each B slice includes a header element indicating whether the B slice is a reference slice. The header element of each reference B slice has a value that depends on depth of the reference B slice in a hierarchy of discardability.

主权项

1. A method of creating a bitstream, by an encoder, the bitstream including at least one coded picture comprised of picture slices encoded as at least one of reference slices or non-reference slices, said method comprising:
for the at least one coded picture, including in the bitstream at least one header element indicating a coded picture type or slice types included in the at least one coded picture; for the at least one coded picture, including in the at least one header element an indicator of whether one or more slices of the at least one coded picture is a reference slice; and including in the at least one header element a value that indicates a level in a hierarchy of data dependency where the picture slices in the at least one coded picture are located, wherein discardable reference slices in the bitstream for rendering one or more trick play operations formatted to be identifiable based on multiple levels for reference slices included in the hierarchy of data dependency.