I'm also experiencing a problem with audio. It worked the first two times and now it won't record the audio at all. I'm using the composite video connector and still have this problem so I don't think its just a bad S_Video connector. I have an iMac, 2.9 GHz Intel Core i5 with 16 GB of memory. The OS is Mavericks 10.9.1.
I actually have two adaptors because I started doing my VHS to DVD conversion using a Windows laptop several years ago. I bought the Mac equivalent last year and I've tried both adaptors with no difference. How can this work for two 2-hour videos and then stop working?
Has the person with the moniker "Should have known better" solved the issue? I don't see any more posts from you. Please let me know if you found a solution. Thanks.