Issue with embedded movies in Keynote

I am using Keynote 12.1 on a Mac Mini running Mac OS 12.5.1.   My Keynote presentation contains audio that I recorded as separate audio files for each slide.  I also have three slides without recorded audio, but with an embedded mp4 movie.  All of this plays fine when I click the “play button”…the audio plays for each slide and each movie plays well.

My problem is that I want to export this file to a movie.  The resultant self-playing movie plays each slide and audio just fine.  However, the embedded mp4 movies now have their audio out of sync with their video.  It is disconcerting to see hear the audio and then see the lips move later.  I want to post this movie for others and will not post something with out-of-sync movies like this.  

Is there any way that I can export this file to a movie format and not have the embedded mp4 movies go out-of-synch?