Passage: Rockstar North began to develop Grand Theft Auto V in 2008, following Grand Theft Auto IV's release. Development was conducted by a team of more than 1,000 people, including Rockstar North's core team and staff from parent company Rockstar Games' studios around the world. The proprietary Rockstar Advanced Game Engine (RAGE) was overhauled for the game to improve its draw distance rendering capabilities. The Euphoria and Bullet software handle additional animation and rendering tasks. Having become familiar with the PlayStation 3 and Xbox 360 hardware over time, Rockstar found they were able to push the consoles' graphical capabilities further than in previous games. Analyst estimations place the game's combined development and marketing budget at more than GB£170 million (US$265 million), which would make it the most expensive game ever made at that time.The open world was modelled on Southern California and Los Angeles, and its design and in-game render constituted much of the game's early work. Key members of the game world production team took field research trips throughout the region and documented their research with photo and video footage. Google Maps projections of Los Angeles were used by the team to help design Los Santos' road networks. To reflect and reproduce Los Angeles' demographic spread, the developers studied census data and watched documentaries about the city. The team considered creating the open world the most technically demanding aspect of the game's production.A fundamental design goal from the outset was to innovate on the series core structure by giving players control of three lead protagonists instead of one. The idea was first raised during Grand Theft Auto: San Andreas' development, but contemporaneous hardware restrictions made it infeasible. Having developed two Grand Theft Auto IV episodic expansion packs featuring new protagonists in 2009, the team wanted to base Grand Theft Auto V around three simultaneously controlled protagonists. The team viewed it as a spiritual...

Question: What two ways did they record their research?
photo and video footage