The Reason of iMovie MP4 No Sound: Technically, iMovie does import MP4 video. Why and what should I do? - Apple Support On iMovie, I tried to create a new project by importing a. Situation 2: iMovie is Missing Audio from MP4 on Import/Export/Playback Click to see other issues like Windows Media Player not playing AVI. After you installing these filters, all players that use DirectShow technology, include WMP, will support MP4 format. To make WMP support MP4 format, you should install filters for MP4 format and its associated codecs. Windows Media Player supports only certain type of Codec. Why MP4 Has No Sound on Windows Media Player: That is because the audio codec of your MP4 file is not supported by WMP. Using Windows 7 and the file type is MP4. Common Situations & Why MP4 Has No Sound Situation 1: No Sound When Playing MP4 on WMP, VLC, QuickTime etc.Ĭan anyone help? Recorded a movie via my mobile phone uploaded it onto my laptop but when playing in windows media player I see the video but no sound.