def conv_min(value):
    """Convert value in min:sec format

    >>> conv_min(130)
    '02:10'
    """
    try:
        value = int(value)
    except:
        value = 0

    if value != 0:
        min = int(value / 60)
        sec = int(value % 60)
        return "%02d" % min + ":" + "%02d" % sec
    else:
        return "00:00"