make_mlf.py

import os
import sys
import wave

label = sys.argv[1]
in_filename = sys.argv[2]

with open(in_filename) as in_file:
    for line in in_file:
        line = line.strip()

        renamed = ""
        htktime = 0

        if line.find(".wav") >= 0:
            with wave.open(line) as wav:
                frames = wav.getnframes()
            htktime = int(frames * 1250)
            renamed = line.replace(".wav", ".lab")
        elif line.find(".raw") >= 0:
            size = os.path.getsize(line)
            htktime = int(size / 2 * 1250)
            renamed = line.replace(".raw", ".lab")
        else:
            continue

        print("\"" + str(renamed) + "\"")
        print("0\t" + str(htktime) + "\t" + label)
        print(".")