Just like the first two times, I’m assembling my Watkins Glen 2017 track footage with ffmpeg. However, I encountered a small issue I didn’t last year, plus I decided to change things up a bit with codecs, and audio selection. ffmpeg requires protocol whitelist now I’m using pretty much the same concatenation command as last year (filenames are a bit different): $ for f in Front-*MOV; do echo file "$f"; done | ffmpeg -f concat -i - -c copy Front.