I have the exact same problem and would appreciate any help on this.
i've been trying to find out if my microphone will work in the external microphone input on the front of my sony dcr trv22 mini handycam camcorder? I've tried plugging a shure sm58 microphone with a 3.5 mm adapter, and when listening through playback using headphones in the headphone plug the sound is in stereo, and really great quality... however when converting the video to my computer, the sound is in mono rather than the stereo that the headphones playback...
is there a certain setting i'm missing or could it be my microphone is a mono setup and will only record on the camera in mono... and if so why does it play back through headphones connected to the camera in stereo.?
I'm looking at purchasing a sony ecm ms908c microphone but i need to be sure it records in stereo sound with the 16 bit audio setting.
Can Some one help me with this... thank you in advance