Sometimes you just need to shove some audio under a video. And booting up Premiere or After Effects is too much of a hassle. Let us merge audio and video and render that out to a new video.
I was looking for that feature in Media Encoder and Google lead me right to your suggestion Marc Zwaneveld. So, of course you've got my vote for this feature.
Is this a feature yet? I need to merge audio and video QT refs in media encoder because I also need Encoder to turn it into an h264 with burn in timecode.
Dang, I thought this feature was a part of Media Encoder and tried to figure out how to do it just now. I must've been thinking of Quicktime Pro. Please make this a thing!
This isn't a feature yet and the request has been around for over 2 years? Wow... I thought I was finding a tutorial, not a feature request. Yes, this would greatly improve Media Encoder.
In Quicktime Player Version 10.5 (1086.4.2) there is a "Remove Audio" feature in the Edit menu. Then you can just drag the new audio file to the QT player window and save. SUPER Helpful!!! Unfortunately it is just a few versions of QT or maybe it is OS dependent but this does exactly what you are looking for. I use it all the time for making mix samples for clients when ProTools doesn't feel like bouncing a QT file.