Lay the ribs on the top rack of the grill (away from the coals, if you're using briquettes). Reduce gas heat to low, close lid, and leave undisturbed for 1 hour. Do not lift the lid at all. Brush ribs with barbecue sauce, and grill an additional 5 minutes.
You can store about 27 hours and 30 minutes of video on a 64gb memory card.
The 16MB internal memory is just for backup. There is a chart in your cameras manual that will tell you how many image files you can store on the card depending upon the resolution you pick By the way your camera uses a SD memory card, not a Memory Stick ...