I've been recording clips from old B&W movies made in the 40's but yesterday, OBS suddenly stopped recording the audio. I have not changed any settings. The strange thing is the Audio Mixer that is selected is still showing the input volume as active and registering the volume, and I can still hear the audio on my headphones. When I open the video clip in VLC or WMP, there is no volume. Both VLC and WMP are working because they will play the clips I recorded on OBS a couple of days ago. Any help will be appreciated. Thank you. My OS is Windows 10.