I have a JVC MG-155U hard disk camcorder with an A/V port that can switch between input and output. When a cable is connected to A/V while Analog Input is enabled, the camera attempts to get input (audio and video) through the A/V source.
What I want to do is get audio input through an external microphone while recording video through the camera. Unfortunately, my camcorder does not have a microphone jack. Are there any cables or special attachments that allow me to receive only audio through A/V?

