I have speed corrected dvd movie (the one from dvd extras, not the direcor's cut) using Davinci Resolve 16 (for video) and Audacity (for audio). I firstly matched the dvd audio with well known laser disc audio rip to get the % of speed correction. I got -4,11%. I finaly ended with speed corrected video from dvd with laser disc audio because laser disc has better audio. Today I think my work was useless because there are better options in terms of audio and video. e.g. https://www.youtube.com/watch?v=NL0TNGfcge4