Using my mixdown in a movie

Hi,
It seems that Quicktime Player isn’t supported by Windows anymore. So, I export my Cubase 9.5 mixdown and my new PC doesn’t have / can’t get Quicktime Player Pro. I used to use this player to strip off the original movie audio and upload my Cubase mixdown. Then clients can watch the film with my music.

Is there another way to do this using software that IS supported by Windows? Can you do this audio / movie editing in Cubase? The films are usually MP4 or .MOV
Best,
Neil

Davinci Resolve can do that, and Audiospot MediaER Audio Spot - Convert Video, Replace Audio in Video, Converter | audio spot has tools to replace audio in video.

Thanks Steve - I’ll take a look.
Best,
Neil