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.
If you have bought (or are planning to buy) Reolink cameras with a SD card, such as RLC-410S, RLC-411S, RLC-410WS, or RLC-411WS, you can refer to this post to figure out how long the SD card can record videos. Note: The SD card is only for motion detection recording. Bitrate will affect the recording file size.