import subprocess
from pathlib import Path

def get_audio_duration(file_path: Path):
    """
    Get the actual duration of the first audio stream by asking ffprobe
    to count packets/frames if the stream metadata is missing.
    Returns duration in seconds.
    """

    # As a last resort, use the format duration
    result = subprocess.run([
        "ffprobe",
        "-v", "error",
        "-select_streams", "a:0",
        "-show_entries", "stream_tags=DURATION",
        "-of", "default=noprint_wrappers=1:nokey=1",
        file_path
        ],
        stdout=subprocess.PIPE,
        stderr=subprocess.PIPE,
        text=True
    )
    result = result.stdout.strip().split(":")[::-1]
    res = 0
    for i in range(len(result)):
        res += float(result[i])*(60**i)
    return res

audio_file = Path("/home/honney/mount/Media/tmp/serien/Maid Sama All/Kaichou wa Maid-sama!/S00/Maid-sama_S00E01 - OVA.mkv")
duration = get_audio_duration(audio_file)
print("Duration of first audio stream (approx.):", duration)