1. A method for determining the position of multiple cameras relative to each other, comprising: at a processor, receiving video data from at least one video recording taken by each camera; selecting a subset of frames of each video recording, comprising: determining relative blurriness of each frame of each video recording, selecting frames having a lowest relative blurriness, counting feature points in each of the lowest relative blurriness frames, and selecting for further analysis, lowest relative blurriness frames having a highest count of feature points; and processing each selected subset of frames from each video recording to estimate the location and orientation of each camera.