There are issues with recording narration along with a PowerPoint presentation in the Mac version of PowerPoint. The software may appear to be working properly, but when you export the video file of the recording presentation, there will be no audio. In some versions of Mac PowerPoint, you won’t be able to export as a video at all. However, if you open the file in PowerPoint for Windows, it will export properly.
For more information about recording voiceover narrations in McGraw DLL.