First, this issue isn't a big one for me, I don't plan on spending an hr (or more) on it.
I have a music video somewhat rare but it has--crap--audio. Luckily I have the song in another file (audio only), obviously of better (much) quality. I'm not interested in doing a merging/fusion (which amount to doing a permanent version of this, in a 3rd file). I've seen some methods that could help me make a combination (play from different files, so a temporary video), but those potential solutions seem to require to redo the steps each time and I'm not interested in that; since the pages from those are old, I didn't even try one.
Is there a way to either have a video & audio combination exported? Or otherwise have the setting saved lasting through updates.
Thank you