I have a couple files that have done this now, one I just recorded this example using OBS. The audio codec is aac at 160kbps. The container is a .mp4. This mostly seems to happen when cutting parts out. Adjusting the audio settings to constant bitrate of 384kbps has no effect, neither does variable. The codec in Shotcut is set to aac as well, so I really don’t understand why I’m getting crackling on my projects.