I cannot find the download link from any of the links given . It says that your link has expired or the file has been deleted.
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このファイルの種類について : Video file formats are used for storing digital video data on a computer system. There are a wide range of video formats, which use different codecs to encode and compress video data. VLC media player is one of the most popular cross-platform and free video player which can play most of the video file formats.