I just attended the Watkins Glen opening day for the second year. It was, again, a blast. I made some slight adjustments to my ffmpeg assembly procedure from last year. Dashcam saves video in 5-minute chunks Instead of creating .list files, I simply used a pipe as input: for fo in AMBA091*; do echo file "$fo"; done \ | ffmpeg -f concat -i - -c copy Front-Track1.mov Front and Rear videos need to be combined Much like last year, I made short samples to confirm if any offsets needed to be done.