My Mac won't import video from my Panasonic SDR-S50 camcorder. I have imported the video clip I need to a PC and put it on my Time Machine hard drive but can't convert it from a MOD to a file that Mac understands. Please help. I searched online for a free file converter but now I have a watermark or no audio. There has to be a free file conversion that has no watermark and audio. Right?