# For each chapter specified on the command line, use ffmpeg to extract a video clip from that chapter
my @ffmpeg_info = `$ffmpeg -i $opt_i 2>&1`;
foreach $line (@ffmpeg_info) {
# For each chapter specified on the command line, use ffmpeg to extract a video clip from that chapter
my @ffmpeg_info = `$ffmpeg -i $opt_i 2>&1`;
foreach $line (@ffmpeg_info) {