ffconcat-dir revision 20241021

ffconcat-dir() {
    # edge case handlers
    if [[ "$1" == "" ]]; then echo "No directory specified. Exiting." ; return 1; fi
    if [[ "$1" == "ffconcat-dir.txt" ]]; then echo "This name is reserved. Please choose a different directory."; return 1; fi
    if [ -d "ffconcat-dir.txt" ]; then mv ffconcat-dir.txt "ffconcat-dir (usurped-$(date +%Y%m%d%H%M%S))"; fi

    # main part
    # (obsolete) truncate -s 0 ffconcat-dir.txt # blanking temporary file from last run
    find "$1" -maxdepth 1 -type f |sed -r "s/(.*)/file '\1'/g"  >ffconcat-dir.txt
    if [[ "$2" != "" ]]; then outfile="$2"; else outfile=tmp.mp4;fi
    ffmpeg -f concat -safe 0 -i ffconcat-dir.txt -c copy "$outfile"
}