You need to save the finished PowerPoint file as the new PPTX format (“PowerPoint Presentation”) rather than the old PPT format (“PowerPoint 97-2003 Presentation”). Otherwise, all audio recording may be lost.
Please refer to the following Microsoft webpage for the step-by-step instructions for the preparation, as well as those for starting the playback of a recorded self-playing slideshow. An instructional video clip outlining the steps is also provided.
https://support.microsoft.com/en-us/office/record-a-slide-show-with-narration-and-slide-timings-0b9502c6-5f6c-40ae-b1e7-e47d8741161c?ui=en-us&rs=en-us&ad=usThe above webpage is in English, but it is available in various languages (including Chinese). In addition, the page provides different sets of steps specific to each recent version of PowerPoint (by default, it shows the steps for “Office 365 for Windows”).
To find out the version of PowerPoint you are using, please see the information at https://www.shapechef.com/blog/find-powerpoint-version
If you view the above webpage in a language other than English (e.g. Chinese), an additional option will be available for you to enable the subtitles of the instructional video in your preferred language. The audio of the video is only available in English.
(“Chinese (Hong Kong SAR)” version of the webpage is used below as an example)
If you have any questions on the above, please contact Mr Kendall YAN at the Centre for Holistic Teaching and Learning via email at yyyan@hkbu.edu.hk.