How to Add Audio, Video and Narration in PowerPoint

Media can make a lesson click: a 20-second clip of a plant opening its leaves explains more than three bullets ever will. It can also break a deck. Videos that will not play on the classroom laptop, music that blares on every slide, and a 400 MB file nobody can email are all common, and all preventable.

This page walks you through adding video and audio on purpose, controlling exactly when they play, keeping the file portable, recording your own narration, and making the media usable for learners who cannot hear it. The running example is a short tutoring micro-lesson called How plants make food.

Decide what the media is for first

Before you insert anything, answer one question: what will the learner understand after this clip that they would not understand from the slide alone? If you cannot answer in one sentence, leave the media out.

Good reasons to add media:

Show a process that moves. Time-lapse growth, a chemistry reaction, a software demo.
Bring in a real voice. A short interview, a pronunciation, a heartbeat for an EMT class.
Explain when you are not in the room. Narration on a self-study deck.

Weak reasons: "the slide looked empty," background music "for energy," or a long clip you plan to talk over.

Before

Two audio sources at once
Video too small to see
Text competes with clip

After

One clear job
Starts on click
Takeaway in the title

A media slide that competes with itself vs. one that supports the explanation.

Keep clips short. For a live lesson, 15 to 60 seconds is usually enough to make the point; link to the full video in your notes or handout if learners want more.

Insert a video and control playback

Go to the slide and use Insert then Media then Video. You get three choices:

This Device...: a video file on your computer (MP4 is the safest choice). It is embedded in the deck, so it travels with the file.
Stock Videos...: free stock clips from Microsoft 365's library (subscription only).
Online Videos...: paste a link from a supported site such as YouTube or Vimeo. The video streams, so it needs internet while you present.

Insert › Media › Video. Choose This Device for a clip you want embedded in the file.

Resize, crop, and pick a poster frame

Drag a corner handle to resize (corners keep the proportions). To cut black bars or an unwanted edge, select the video and use Video Format then Size then Crop. Then set a clean still image for when the video is not playing: play to a good moment, pause, and choose Video Format then Adjust then Poster Frame then Current Frame. A poster frame stops your slide from showing a black box or a blurry first frame.

Set when it starts

Select the video and open the Playback tab (it appears only when a video or audio clip is selected). In the Video Options group, the Start list controls timing:

Start option	What happens	Use it when
In Click Sequence	Plays on your next click or key press, in order with any animations	Live teaching, the usual choice
Automatically	Plays as soon as the slide appears	Self-running kiosks, recorded decks
When Clicked On	Plays only when you click the video itself	You might skip it, or a learner controls it

The same group has checkboxes worth knowing: Play Full Screen, Loop until Stopped, and Rewind after Playing (returns to the poster frame, which looks tidier than freezing on the last frame).

Trim and fade

Rather than editing the clip in another app, use Playback then Editing then Trim Video. Drag the green start marker and red end marker, preview, and click OK. Trimming hides the unused part; it does not delete it until you compress the media (covered below). Fade In and Fade Out in the same group soften harsh starts and cuts.

Add audio: files, narration, and music

Audio uses the same pattern: Insert then Media then Audio, then Audio on My PC... for a file, or Record Audio... to record straight into the slide with your microphone.

To record a short narration clip:

Go to the slide and choose Insert then Media then Audio then Record Audio....
Type a name such as leaf-explanation.
Click the red record button, speak, then click stop. Play it back.
Click OK. A speaker icon appears on the slide.

Select the speaker icon and the Playback tab shows audio options:

Trim Audio and Fade In / Fade Out, just like video.
Start: In Click Sequence, Automatically, or When Clicked On.
Play Across Slides: keeps playing when you move to the next slide.
Loop until Stopped and Hide During Show (hides the speaker icon while presenting).
Play in Background: a one-click preset that turns on Automatically, Play Across Slides, Loop until Stopped, and Hide During Show.

A good rule for narration: one clip per slide, set to Automatically if the deck runs on its own, or In Click Sequence if you are presenting live. Keep each clip short enough that you could re-record it in one take. Fixing one slide's audio is easy; fixing a five-minute clip that spans the deck is not.

Title Only + diagram, narration clip hidden

Speaker notesNarration script: Leaves catch sunlight. They combine water from the roots with carbon dioxide from the air, and make sugar the plant can use, giving off oxygen.

A narrated slide: the speaker icon is hidden during the show and the notes hold the script.

Keep the file portable: compress and test

Embedded video can make a deck huge. Before you share, check the size and compress.

Save the file. Note its size in File Explorer.
Go to File then Info. If the deck has embedded media, you will see a Multimedia section (Windows only).
Click Compress Media and choose a quality: Full HD (1080p), HD (720p), or Standard (480p).
Wait for the dialog to finish, then save and compare the new file size.

Quality	Good for
Full HD (1080p)	Projecting on a large screen where detail matters
HD (720p)	Most classrooms, meetings, and screen sharing
Standard (480p)	Emailing, uploading to a slow learning platform

Compression also permanently removes the parts of clips you trimmed away, which is often where the biggest savings come from.

Test on the device you will present from

Media that plays on your laptop can fail somewhere else. Before the session:

Open the deck on the actual presenting computer, or at least a second device.
Play every clip in Slide Show view, not just in Normal view.
If you used Online Videos, confirm the venue's internet works and the site is not blocked.
Bring a backup: the source MP4 files in the same folder as the deck, or an exported PDF plus the clips.

Keep a media folder next to your deck with the original, uncompressed clips and audio. If you need to re-edit later, you start from the full-quality source rather than a compressed copy.

Record a slide show with narration

Recording turns your deck into something learners can watch on their own: your voice, optional camera video, any ink you draw, and the timing of every slide and animation.

In PowerPoint for Microsoft 365, use the Record tab. Click Record and choose From Current Slide or From Beginning. (The same command is under Slide Show then Set Up then Record.)

Record › Record. Start from the beginning for a full take, or from the current slide to redo one part.

The recording window opens with your slide in the middle and your notes available as a teleprompter. To record:

Check the microphone and camera buttons. Turn the camera off if you only want voice.
Click the red record button. A short countdown runs.
Talk through the slide. Use the arrow or Right key to advance; PowerPoint records when each slide and animation happens.
Use the pen or highlighter under the slide to circle things as you talk. Ink is recorded too.
Click stop, then play back the slide to check it.

Narration does not record during slide transitions, so pause briefly after you advance before you speak again.

Redo part of a recording

You do not have to start over. Go to the slide you want to fix, record From Current Slide, and record just that slide. To wipe recordings, use Clear in the recording window (current slide or all slides), or from Normal view use the Clear options under the Record dropdown on the Slide Show tab, which can remove timings or narration on the current slide or all slides.

Export the recording as a video

When the recording is right, export it:

Go to File then Export then Create a Video.
Pick a quality (Full HD (1080p) or HD (720p) covers most needs).
Make sure Use Recorded Timings and Narrations is selected.
Click Create Video, choose a name and folder, and wait. Long decks take a while; watch the progress bar on the status bar.

The Record tab also has an Export to Video shortcut. Keep the PPTX too: it is your editable master, and the MP4 is just a copy for viewers.

Make media accessible: captions and transcripts

Some learners cannot hear audio, some are in a noisy room, and some are studying a second language. Plan for them from the start.

Captions for video

PowerPoint can show captions from a caption file that sits alongside the video. Microsoft 365 supports WebVTT files (.vtt), and recent versions also accept SubRip (.srt) files in UTF-8.

Get or create the caption file (many video tools export .vtt).
In Normal view, select the video.
Choose Playback then Insert Captions then Insert Captions.
Pick the file and click Insert.
Play the video in Slide Show to check the captions appear and stay in sync.

Transcripts for audio and narration

For narration you recorded yourself, the easiest accessible version is a transcript:

Write your script in the slide's Notes pane before recording. The script becomes the transcript.
When you share the deck or video, include the notes (for example, export a PDF of notes pages) or post the transcript next to the video.

Avoid audio-only instructions

If the only place a learner hears "Now pause and try question 3" is the narration, a learner who cannot hear it is stuck. Put every instruction on the slide too.

Before

Task only in narration
No transcript
Icon is the whole slide

After

Task visible on slide
Narration repeats it
Script in notes

An audio-only instruction vs. one that works for everyone.

Common mistakes with media

Linking to a file on your own computer. If you copy the deck to another laptop and the clip is missing, it was linked rather than embedded, or you used an online video without internet. Insert from This Device and test elsewhere.
Autoplay surprises. A video set to Automatically starts while you are still introducing it. Use In Click Sequence for live teaching.
Background music under speech. It competes with you and with any narration. Cut it, or use it only on a title or break slide.
Oversized files. A 2-minute 4K clip can be larger than the whole rest of the deck. Trim, then Compress Media.
No poster frame. A black rectangle looks broken. Set a poster frame.
One giant narration clip. Record per slide so you can fix one slide at a time.
Captions lost after compression. Embedded subtitles disappear when you compress. Use a separate .vtt caption file.
Instructions only in audio. Repeat every task on the slide.

Practice

Build and fix a 5-slide media micro-lesson

Guided practice

Create a 5-slide deck called How plants make food: title, one concept slide, one video slide, one practice slide, one summary.
On slide 3, insert a short MP4 with Insert then Media then Video then This Device.... Resize it to fill most of the slide and give it a takeaway title.
Set Start to In Click Sequence, tick Rewind after Playing, and set a poster frame.
Trim the clip to under 30 seconds with Trim Video and add a 0.5 second Fade In.
On slide 2, write a 3-sentence narration script in the Notes pane, then record it with Insert then Media then Audio then Record Audio.... Tick Hide During Show.
Save the file and write down its size. Run File then Info then Compress Media at HD (720p), save again, and write down the new size.
Use Record then Record then From Current Slide on slides 4 and 5 to record a 2-slide explanation. Play it back and re-record one slide.
Export with File then Export then Create a Video using recorded timings and narrations.

Independent challenge

Take a deck (yours or a friend's) with media problems: a video that autoplays, music on every slide, or a file that is too big to email. Fix the playback settings, remove unnecessary audio, compress the media, and add either captions or a transcript for every clip.

Reflect: for each media item you kept, write one sentence explaining what it teaches that the slide alone could not. For one you removed, explain why.

Check your understanding0 of 4 correct

Pick an answer to see whether it's right and why.

You are teaching live and want a clip to play only after you have introduced it, in order with your other on-click animations. Which Start setting fits?
In Click Sequence plays the video on your next click, in order with the slide's animations, so you control the moment it starts.
Your deck with three embedded videos is 380 MB and the learning platform limits uploads to 100 MB. What should you try first?
Trimming removes unused footage and Compress Media reduces quality to a sensible level, which together usually shrink the file a lot without losing the teaching value.
A self-study deck tells learners 'Pause now and answer question 2' only in the recorded narration. A deaf learner reports getting lost. What is the best fix?
Instructions should never be audio-only. Showing the task on the slide and providing a transcript or captions makes it usable without sound.
You recorded a 12-slide narrated lesson and stumbled on slide 7. What is the most efficient way to fix it?
Narration is stored per slide, so re-recording from the current slide replaces only the part you need to fix.

You're ready to move on when

Tick each one off as you go. Your ticks are saved in this browser only.

You can insert a video and set it to start in click sequence, with a poster frame and trimmed length.
You can record, trim, and place a narration clip without letting audio play across slides by accident.
You can compress media and compare file sizes before and after.
You can record a slide show, re-record one slide, and export it as a video.
You can add a caption file to a video or provide a transcript for narration.

How to Add Audio, Video, and Narration in PowerPoint

What you'll learn

Before you start