Video image encoding device, video image encoding method, video image decoding device, and video image decoding method

摘要

A method includes determining a group to which each of a plurality of blocks belongs, the plurality of blocks being obtained by dividing each picture included in video image data; adding, to an output stream, group information expressing the group to which each of the plurality of blocks belongs; calculating an output time for each of the groups; determining output delay for each of the groups; adding, to the output stream, an output delay time from a decode time of each of the groups; controlling an encode amount so that data used for outputting all of the blocks included in one of the groups arrives at a decoding buffer of a decoding device and decoding is completed by an output time expressed by the output delay time; and performing encoding based on the encode amount that has been controlled.

主权项

1. A video image decoding device comprising:
a group information extraction unit configured to extract, from an input stream, group information indicating a group among a plurality of groups into which blocks are grouped, the input stream including encoded data of the blocks obtained by dividing each picture included in video image data; an output delay information extraction unit configured to extract, from the input stream, group output delay information of a given group, wherein the group output delay information of the given group includes information indicative of a delay by which displaying the blocks of the given group is delayed in response to a time at which another group is decoded, said another group being decoded after the given group is decoded; an output time calculation unit configured to calculate an output time of the given group based on the group information and the group output delay information, the output time of the given group being a time at which the blocks of the given group are displayed; and an output unit configured to sequentially output, at respective output times, the groups that have been decoded.