concat all videos in a directory alphabetically

alphavid.py

import os
import subprocess

FILES = os.listdir('.')  # ~/path/to/vids
TEMPLATE_PREFIX =  'file '
OUTPUT_LIST = []

for file_name in sorted(FILES):
    full_file_path = os.path.abspath(file_name)
    OUTPUT_LIST.append(TEMPLATE_PREFIX + full_file_path)

with open('list.txt', 'rb') as f:
    for line in OUTPUT_LIST:
        f.write(line+'\n')

command = 'ffmpeg -f concat -i list.txt -c copy output'.split()
subprocess.call(command)