Taking movie of my baby laughing and when I played it back, I could barely hear it even with the speakers all the way up. I've used speaker phone before and I've never had anyone tell me they couldent hear me well. What gives??
I have had that happen to me during my son's music recital. Video quality was great but the sound was very low. It turned out that I had my finger covering the mic. You might want to make note of the placement of your fingers in relation to the microphone.