I purchased a dashcam a while ago because (1) people drive like absolute idiots where I live (seriously, watch that video) and (2) who knows what you might capture? It’s a Viofo A129 Pro Duo, it has a 4k front-facing camera and an additional HD rear-facing camera. It also has built-in GPS.

Because it’s always on, I figure it would be nice to use the footage for mapping purposes as well! The process is not completely straightforward, hence this blog post.
Let’s look at what the camera produces:




Arqueta de hidrante contraincendios en Ciudad Jardín (
