Could not get this to work with my portable DVD player. Pulled the 3.5mm plug out slightly and the audio worked. I assumed that some wires within the cable were incorrectly connected or reversed. 3.5mm plug has 4 contact points, which makes sense as the inputs are video, L-audio, R-audio and common ground. Tried another identical RCA A/V to 3.5mm cable and it worked fine. Good thing I only paid $2.50 for this piece of garbage.