Well, I tried multiple formats and settings. The result varied from a file-size of 3Mb as large as 3.5Gb. As Youtube won’t allow a size bigger then 1Gb (unless you are a professional user) I settled for a file which is 23Mb (audio & video).
The (original) exported audio-file was 65Mb in Wave-format. Due to limitations in my current software I can’t use Flac or another extension. So I ended up with a upload file of 23Mb.
I’m about to upload this file to Youtube and trying the advice of Chris (transcode to AAC). I hope there will be something left of the audio quality.
Anyway, the “problem” i have is NOT with Shotcut but with the several format-changes I need to use to create a usable Video file. This problem starts with recording from Cubase which won’t allow recording Audio&Video at the same time, so I have to use a screendump program to capture the video and the (limited) export settings in Cubase. Then I have to synchronize both with Shotcut. Next step is to export the resulting video (including audio) to the best possible quality. Finally Youtube itself likes to “eat” some audio-quality also.
Going to upload it within the hour (whish me luck)
Thanks for your tips and suggestions.