Pages

Add video and audio in Pages on Mac
You can add video and audio to a document, or replace a media placeholder with a video.
Note: Video and audio files must be in a format that QuickTime supports on your Mac. If you can’t add or play a video or audio file, try using iMovie, QuickTime Player, or Compressor to convert the file to a QuickTime file (with a .mov filename extension) for video, or an MPEG-4 file (with a .m4a filename extension) for audio.
You can also record audio and add it to your document.
You can set Pages to optimize the format and quality of movies and images that you add to documents.
To set video or audio looping, adjust playback volume, or make other edits to your media, see Edit video and audio.