If the average MP3 encoding is approximately 1 MB per second (MBps), and the average song lasts about four minutes, then a petabyte of songs could play continuously for more than 2,000 years. If the average smartphone camera photo is 3 MB, and the average printed photo is 8.5-inches wide, a petabyte of photos placed side by side would be more than 48,000 miles long. That is almost long enough to wrap around the equator twice.