The keynote on your Mac has a very useful next-voice-over feature, which is the Readme sync Recording for each slide. Records and retains your voice and timing when you play back your presentation for your audience. How to use this function in keynote? See the tutorials below for you:
Keynote How to record a voiceover narration
1. Select the slide you want to start recording on.
2. In the audio panel of the Settings inspector, click Record.
The recording mode shows you the current time, the current slide, and the next slide. To change the layout and view speaker notes, timers, and so on, click the top right corner to select what you see when recording, and then select Features.
3. To start recording your presentation, click the red dot button at the bottom of the window.
The timer will countdown from 3, and then start recording.
4. Make a clear sound in the microphone to record the narration.
5. To advance to the next slide, tap the slide or press the RIGHT ARROW key.
You can pause the recording at any time by clicking the pause button. Click the red dot button to continue recording.
6. When you are finished recording, click the red dot button to stop recording.
7. Press the ESC key to save the recording and exit the presentation.
8. To remove voiceover narration, click Clear in the audio panel of the settings Inspector. If you add a new slide after recording a voiceover narration, a warning appears, warning that the recording may be out of sync with the presentation.