Content transmission device, content reception device, content transmission program, content reception program, content transmission method, and content reception method

摘要

Provided are a transmission device, a reception device, and the like that can switch contents even when reception states of a plurality of streams are deteriorated at the same time, reduce power consumption, and improve packet lost resistance. The receiving device receives the first stream for each predetermined unit and extracts the first content data, and determines whether the first stream has been normally received for each predetermined unit. A control unit that issues an instruction to start reception of a second stream transmitted relatively late, and starts receiving the second stream when receiving the instruction, and corresponds to a first unit of a predetermined unit that could not be received. A second receiving unit that receives the two streams and extracts the second content data; if the content cannot be reproduced, the content for alternative display is reproduced based on the second content data; And a playback control unit that plays back the content for normal display based on the first content data.