Do I need special software to watch porn videos

The Kind of porn video files that can be downloaded from the Japanese porn sites is mainly mp4 and wmv. You can play as it is in if Windows user in WindowMediaPlayer. Your smartphone can play as it is not necessary special playback software. I think that it can be played on Mac user if QuickTime, but in rare cases wmv files can not be played. Please install the WindowsMediaPlayer for Mac in that case.