Abstract: One variation of a method for automatically publishing action videos to online social networks includes: recording video frames to a circular buffer of a preset duration; writing a first sequence of video frames from the buffer to a local memory, the first sequence of video frames previously recorded to the buffer over a first duration from a start time to a first time, the first duration a subset of the preset duration; writing a second sequence of video frames to a local memory, the second sequence of video frames recorded over a second duration from the first time to a final time; processing the first sequence of video frames and the second sequence of video frames into a first video of a first format and of a first length corresponding to a first online social network; and automatically uploading the first video to the first online social network.