Abstract: Provided is a video playback device 2 including: a scene selection unit 211 for a user to select a certain scene contained in video data 322; a scene selection accepting unit 212 for accepting selections of divided files to be downloaded from a server 3, in accordance with inputs by the scene selection unit 211; a download instruction unit 213 for giving instructions to download the divided files that have been accepted by the scene selection accepting unit 212 and are to be downloaded; a playback video generation unit 214 for generating playback video data 222 as part of the video data 322, from the divided files downloaded based on the instructions of the download instruction unit 213; and a video playback device storage unit 22 for storing the playback video data 222 that are playable on a display unit 25.

Abstract: Provided are a video playback device and a video playback method which enable a user to readily search for a scene the user wants to watch and to readily adjust a playing position in a fine-tuned manner.

Abstract: Provided is a video tagging device for tagging appended tags and/or comments to a video in time synchronization therewith while seeing a video recording subject of the video instead of watching video footage.

Abstract: A non-transitory computer-readable storage medium storing a playback control program that causes a computer to perform a process, the process including specifying a plurality of partial videos extracted from a sport video, each of the plurality of partial videos being associated with information indicating a playback start positions and information on a content of sports play indicated by each of the plurality of partial videos, determining a plurality of playback times from the playback start position for each of the plurality of partial videos based on the information on the content corresponding to each of the plurality of partial videos and based on relation information that associates each of a plurality of contents of sports play with playback times, and playing back the plurality of partial videos based on the plurality of determined playback times.

Abstract: A non-transitory computer-readable storage medium storing a playback control program that causes a computer to perform a process, the process including specifying a plurality of partial videos extracted from a sport video, each of the plurality of partial videos being associated with information indicating a playback start positions and information on a content of sports play indicated by each of the plurality of partial videos, determining a plurality of playback times from the playback start position for each of the plurality of partial videos based on the information on the content corresponding to each of the plurality of partial videos and based on relation information that associates each of a plurality of contents of sports play with playback times, and playing back the plurality of partial videos based on the plurality of determined playback times.

Abstract: The invention is directed to a system that can easily generate determination conditions and determine a plurality of similar junk electronic mail pieces based on one determination condition.