My operating system is Slackware 15, and I recently installed obs_studio (in order to convert my collection in video tapes to digital format). The problem that I am having is that when I go to record a video tape to my computer, I get a video output - but no sound - except in '.mkv' format (and only if the audio codec is set to 'opus').
And yet I can watch the video tape with sound and video, no problems.
And yet I can watch the video tape with sound and video, no problems.