I'm working on a late 2013 Mac Pro with no sound input device found. I'm unable to record in Character Animator.
When I hit record, a notification window pops up and says "The selected audio device has no input channels available. Do you want to open the Audio Hardware preferences?" I click the Preferences button and see "After Effects 13.8 (Not working) in the Default Input field. When I click this field, the only option given is "No Input".
Would simply attaching an external microphone solve the problem? (I don't have one or else I'd try). I don't need to record sound, I only what to record silent animations.
plugged in a microphone and solved the problem.
..Or you could just turn off the microphone input (blue microphone icon on the right side of your screen -turns grey when clicked off). You will be able to record with no pop up and it will be silent as you need it to be.