:: Create File List
echo file file1.mp4 > mylist.txt
echo file file2.mp4 >> mylist.txt
echo file file3.mp4 >> mylist.txt
:: Concatenate Files
ffmpeg -f concat -i mylist.txt -c copy output.mp4
:: Create File List
echo file file1.mp4 > mylist.txt
echo file file2.mp4 >> mylist.txt
echo file file3.mp4 >> mylist.txt
:: Concatenate Files
ffmpeg -f concat -i mylist.txt -c copy output.mp4