extract.py

# script for ripping audio out of gamemaker audiogroup
in_file = open("./audiogroup1.dat", "rb") # opening for [r]eading as [b]inary
data = in_file.read()
start = data.find(b"OggS")-4 # not exactly reliable
idx = 0
while True:
    size = int.from_bytes(data[start:start+4],'little')
    f = data[start+4:start+4+size]
    print(f"test{idx}.ogg  - size:{size}")
    with open(f"./test{idx}.ogg","wb") as new_file:
        new_file.write(f)
    idx+=1
    start = data.find(b"OggS",start+size)-4
    if start <= 0:
        print("EOF")
        break