Patent ID: 8126309

Claim:
A video playback apparatus comprising: a data storage unit configured to store video data and a first video time stamp which corresponds to a playback time to play back the video data; an information storage unit configured to store first associated information and a first associated time stamp, the first associated information being related to the video data, and the first associated time stamp corresponding to a playback time to play back the first associated information; a data acquisition unit configured to acquire plural playback video data to be played back and plural second video time stamps of the plural playback video data from the data storage unit on the basis of the stored video data and the first video time stamp, and acquire second associated information of the playback video data and a second associated time stamp of the second associated information from the information storage unit on the basis of the first associated information and the first associated time stamp; a decision unit configured to decide to present the second associated information by at least one of text and voice; and a presentation unit configured to present the playback video data and the second associated information on the basis of the second associated time stamp and the second video time stamps, wherein the decision unit includes a measurement unit configured to measure a magnitude of movement of video of the playback video data, and the decision unit decides to present the second associated information by voice when the magnitude is not less than a threshold value and to present the second associated information by text when the magnitude is less than the threshold value.