I use Camtasia Recorder for lecture and desktop video capture in a university classroom. I wear a mic, and Camtasia captures that audio along with the desktop in real time. Unfortunately, there is no way to capture multiple audio streams in real time, so I cannot capture both my microphone and a classroom microphone along with the video. Therefore I use a separate Zoom microphone to capture the classroom audio as an MP3 file which I then bring into Camtasia.
What I'd like to be able to do is import this MP3 file and have it automatically sync up with the audio track that Camtasia has captured. (My voice is in both streams and so could serve as the basis for this.) Unfortunately, it seems like this is not something that can be automated. I've found that if I sync things up to the best of my ability, after a few minutes the audio tracks are significantly out of sync.
Is there any easy way to accomplish what is desired here? (I'd like to edit the video/after recording and switch among the audio tracks depending on whether I or a student is speaking. There's just no easy way to do that as it stands now.)