Can’t edit audio in QT
I have a new iMac, and some of the newer features are unfamiliar. I have an MP4 audio file that I wanted to trim using QuickTime. But when I open the file, most of the edit functions are greyed out, particularly Trim. I looked at a question that gave criteria for the edit functions to be available, and I think I satisfy those conditions, namely it’s an open, unedited file.
What am I missing?
🤔😉😊
iMac 27″, macOS 10.15