Add existing video and audio in Keynote on iPhone
You can add video and audio to a slide. When you show the slide during a presentation, by default the video or audio plays when you tap anywhere on the slide. You can set video or audio looping and start timing to make the video or audio start automatically when the slide appears. You can also add a soundtrack that plays for the entire presentation.
Note: Video and audio files must be in a format that QuickTime supports on your device. If you can’t add or play a media file, try using iMovie, QuickTime Player or Compressor on a Mac to convert the file to an MPEG-4 file (with a .m4a filename extension) for audio, or a QuickTime file (with a .mov filename extension) for video.
You can also record video and audio and add it to your presentation.
Add existing video or audio
On the slide where you want to add the video or audio, tap
, then tap 
.Tap Photo or Video; to insert media from iCloud or another service, tap “Insert from”.
Navigate to the file, then tap it.
To resize video, drag any blue dot, then tap Done.
Tap the Play button
on the media to play it.
Replace a media placeholder with a video
Tap
in the bottom-right corner of a media placeholder.Tap an album; to use a video from iCloud or another service, tap “Insert from” below the albums.
Tap the video you want to add.
If you’re inserting a video from iCloud or another service, tap folders to locate it.
Drag any blue dot to resize the video, then tap Done.
Tap the Play button
on the video to play it.
Replace video
Tap to select the video on the slide.
Tap
, tap Movie, then tap Replace.Do one of the following:
Take a new video: Tap Take Photo or Video below the albums, then tap Video. Tap
to start recording; tap 
to stop. Then tap Use Video.Choose a file: Tap an album, or tap “Insert from” below the albums, then tap the video you want. Tap Choose.
Add a video description
You can add a description to any video in your presentation. Video descriptions are read by assistive technology (for example, VoiceOver) when someone uses that technology to access your presentation. Video descriptions aren’t visible anywhere in your presentation.
Tap the video to select it, tap
, then tap Movie.Tap Description, then tap in the text box and enter your text.
If you export your presentation as a PDF, video descriptions are still readable by assistive technology. See Export to PowerPoint or another file format in Keynote on iPhone.
To add descriptions to an image, see Add an image description.
Add an audio description
You can add a description to audio in your presentation. Audio descriptions are read by assistive technology when someone uses that technology to access your presentation. Audio descriptions aren’t visible anywhere in your presentation.
Tap the audio to select it, tap
, then tap Audio.Tap Description, then tap in the text box and enter your text.
If you export your presentation as a PDF, audio descriptions are still readable by assistive technology. See Export to PowerPoint or another file format in Keynote on iPhone.
To add descriptions to an image or video, see Add an image description or Add a video description.
Add a soundtrack
A soundtrack begins playing when the presentation starts. If there are slides that already have video or audio, the soundtrack also plays on those slides.
A file added as a soundtrack always plays from its beginning.
Tap
, then tap Soundtrack.Tap Choose Audio, then tap a song to add it.
To add more music, tap Add More Tracks.
Tap Loop to have the soundtrack repeat until the presentation ends.
You may need to swipe up to see these options.
Tap Done to return to your presentation.
To turn off a soundtrack, tap Soundtrack, tap Choose Audio, then tap Off.
Some media files are protected under copyright law. Some downloaded media may be played only on the device where the download occurred. DRM (digital rights management) protected music can’t be added to the presentation soundtrack.
To set video or audio looping or adjust playback volume, see Edit video and audio in Keynote on iPhone.