PowerPoint Audio & Video
Click Insert → Video. Three options appear: This Device embeds a video file from your computer into the presentation; Online Videos links to a YouTube or Vimeo URL; and on Microsoft 365 versions, Stock Videos provides free professionally shot clips. For most presentations, inserting from This Device provides the most reliable playback because the video file travels with the .pptx — no internet connection required during the presentation.
Supported formats include MP4 (recommended), AVI, MOV, WMV, and several others. MP4 encoded with H.264 codec delivers the best balance of quality and file size across all platforms.
Video Playback Settings
Select the video on the slide and click the Video Format tab for visual adjustments, or the Playback tab for behaviour settings. The Playback tab controls are critical for professional presentations.
Start Options
The Start dropdown offers three modes. In Click Sequence plays the video when you advance the slide (press spacebar or arrow). Automatically starts playback the moment the slide appears — useful for background videos or ambient loops. When Clicked On plays only when the audience sees you click the video directly — ideal for demonstration videos you may choose to skip depending on audience questions.
Loop and Hide When Finished
Tick Loop until Stopped for ambient background videos — a time-lapse cityscape behind a data slide, for example. Tick Hide While Not Playing to make the video invisible when paused — it reappears only during playback. Rewind after Playing returns to the first frame automatically after the video ends.
Trimming Video in PowerPoint
You do not need video editing software to cut out unwanted portions. Select the video, go to Playback → Trim Video. The trim dialog shows a timeline with green (start) and red (end) markers. Drag these markers to set the precise start and stop points. PowerPoint stores the trim points internally — the original file on disk is not modified. You can adjust the trim points again at any time.
Inserting Audio
Click Insert → Audio → Audio on My PC to embed a sound file from your computer. Supported formats include MP3, WAV, AAC, and AIFF. A small speaker icon appears on the slide — this is the audio object. Position it off-slide (drag it to the grey area outside the slide boundary) if you do not want the icon visible during the presentation. The audio still plays from its hidden position.
Record Audio
PowerPoint can record narration directly into the presentation without external software. Click Insert → Audio → Record Audio. Name the recording, click the red record button, speak your narration, and click Stop. The recording embeds as an audio object on the current slide. This feature is particularly useful for creating self-running presentations for online sharing.
To play audio across multiple slides, select the audio object, open the Playback tab, and set Start to Automatically. Then tick Play Across Slides. The audio continues playing as you advance through slides. Set the Stop Playing value to the number of slides you want the music to span.
Optimising Media for Sharing
Embedded video files inflate presentation file size substantially — a 1-minute HD video adds 100–300MB. Click File → Info → Compress Media to reduce video quality and file size. Options range from Presentation Quality (1080p, larger file) through Internet Quality (720p, moderate size) to Low Quality (480p, smallest file for email sharing).
Videos linked from YouTube or Vimeo require a live internet connection during the presentation. If the venue has slow or blocked internet, the video will not load. Embedded local videos play without internet regardless of network conditions. For critical presentations, always test video playback in the actual venue on the actual device you will use.
Video Formatting
The Video Format tab applies the same style options available for images: crop, colour correction, artistic effects, borders, and shadows. Cropping a video works like cropping a photo — you define a visible rectangle and the rest is masked. Video styles apply frame borders — a film-strip effect, a rounded rectangle border, or a drop shadow — that make embedded videos look intentionally placed rather than just dropped on the slide.