def convert_to_seconds(time):
    """Will convert any time into seconds.

    If the type of `time` is not valid,
    it's returned as is.

    Here are the accepted formats:

    .. code:: python

        convert_to_seconds(15.4)   # seconds
        15.4
        convert_to_seconds((1, 21.5))   # (min,sec)
        81.5
        convert_to_seconds((1, 1, 2))   # (hr, min, sec)
        3662
        convert_to_seconds('01:01:33.045')
        3693.045
        convert_to_seconds('01:01:33,5')    # coma works too
        3693.5
        convert_to_seconds('1:33,5')    # only minutes and secs
        99.5
        convert_to_seconds('33.5')      # only secs
        33.5
    """
    factors = (1, 60, 3600)

    if isinstance(time, str):
        time = [float(part.replace(",", ".")) for part in time.split(":")]

    if not isinstance(time, (tuple, list)):
        return time

    return sum(mult * part for mult, part in zip(factors, reversed(time)))
Will convert any time into seconds.

    If the type of `time` is not valid,
    it's returned as is.

    Here are the accepted formats:

    .. code:: python

        convert_to_seconds(15.4)   # seconds
        15.4
        convert_to_seconds((1, 21.5))   # (min,sec)
        81.5
        convert_to_seconds((1, 1, 2))   # (hr, min, sec)
        3662
        convert_to_seconds('01:01:33.045')
        3693.045
        convert_to_seconds('01:01:33,5')    # coma works too
        3693.5
        convert_to_seconds('1:33,5')    # only minutes and secs
        99.5
        convert_to_seconds('33.5')      # only secs
        33.5
    
moviepy/tools.py