The last home video release to have the original mono track was the 1998 DVD btw
I’m aware of that, but I think that older home video “tempo timings” (as I call the instance of analog and digital home video versions of movies and TV having different tempos at different parts) are different than on newer home video tempo timings. An example being of the tempo timings of 1984-1994 home video versions of Willy Wonka and the Chocolate Factory vs. those of the 1996-present home video versions of that movie.
I’d like to use the mono track and music recording tracks from the 1993 Wizard of Oz laserdisc to make stereo sound clips for an Oz fan site.