Guerrilla filmmaking refers to a form of independent filmmaking characterized by low budgets, skeleton crews, and simple props using whatever is available. Often scenes are shot quickly in real locations without any warning, and without obtaining filming permits.
Guerrilla filmmaking is usually done by independent filmmakers because they don't have the budget or time to obtain permits, rent out locations, or build expensive sets. Larger and more "mainstream" film studios tend to avoid guerrilla filmmaking tactics because of the risk of being sued, fined or having their reputation damaged due to negative PR publicity.
According to Yukon Film Commission Manager Mark Hill, "Guerrilla filmmaking is driven by passion with whatever means at hand".
The advent of digital cameras and home computer editing systems such as Final Cut Pro, Avid Media Composer, and Premiere Pro are a contributing factor to the increase in guerrilla filmmaking. Digital editing is a cheap and easy form of editing that allows the filmmaker to edit anywhere and at a low budget.
Many guerrilla filmmakers are now using professional quality digital cameras because of their cheap cost, and the ability to set up shots quickly.