How do I make them?

Get map data (%.osm%) from before the mapping party

*Get map data (%.osm%) from before the mapping party*

Grab a new data set every 15 minutes De-duplicate %osm% files to save space Find a suitable cover photo and generate artwork For each two data sets, calculate the difference Calculate and generate images containing changes Render each map file with Mapnik to an image Combine all the images into a video Add music to video