[Python知识库]Python获取mp3音频文件时长方法汇总

'''
    pymediainfo: pip3 install pymediainfo       版本：5.1.0
    不支持网络音频
'''
class pymediainfoTest():
    @classmethod
    def getAudioTimes(cls, audio_path):
        __lib_pymediainfo = __import__('pymediainfo', fromlist=['MediaInfo'])
        media_info = __lib_pymediainfo.MediaInfo.parse(audio_path)
        data = json.loads(media_info.to_json())
        # 多声道
        duration = data['tracks'][0]['duration']
        duration1 = data['tracks'][1]['duration']
        print(duration, data['tracks'][0]['other_duration'])
        print(duration1, data['tracks'][1]['other_duration'])
# pymediainfoTest.getAudioTimes(music_url)

'''
    mutagen: pip3 install mutagen       版本：1.45.1
    不支持网络音频
'''
class MutagenTest():
    @classmethod
    def getAudioTimes(cls, audio_path):
        __lib_mutagen = __import__('mutagen', fromlist=['mp3'])
        audio = __lib_mutagen.mp3.MP3(audio_path)
        mp3_times = int(audio.info.length)
        f = int(mp3_times/60)
        m = mp3_times - f * 60
        print('%s秒, %s分%s秒' % (mp3_times, f, m))
# MutagenTest.getAudioTimes()

'''
    librosa： pip3 install librosa      版本：0.9.1          http://librosa.org/doc/latest/index.html
    不支持网络音频
    错误: audioread.exceptions.NoBackendError
    解决：找到ffdec.py文件(python/lib/site-packages/audioread/ffdec.py)，打开找到COMMANDS = (‘ffmpeg’, ‘avconv’)这行，将’ffmpeg’修改成你的ffmpeg.exe的路径（建议路径引号前面加上r）。
    速度慢
'''
class LibrosaTest():
    __slots__ = ()
    # 取音频时长
    @classmethod
    def getAudioTimes(cls, audio_path):
        __lib_librosa = __import__('librosa')
        duration = __lib_librosa.get_duration(filename=audio_path)
        print(duration)
# LibrosaTest.getAudioTimes()

'''
    pydub: pip3 install pydub       版本：0.25.1           https://github.com/jiaaro/pydub
    需要下载ffmpeg：
        https://ffmpeg.org/-->download-->windows builds by BtbN-->ffmpeg-master-latest-win64-gpl.zip(104M)
    解压后将/bin添加到系统环境变量path中，重启vscode才会生效
'''
class PydubTest():
    __lib_pydub = __import__('pydub')
    # 方法一，支持网络音频
    @classmethod
    def getAudioTimes(cls):
        song = cls.__lib_pydub.utils.mediainfo(music_url)
        print(song['duration'])
    # 方法二，不支持网络音频
    @classmethod
    def getAudioTimes1(cls):
        sound = cls.__lib_pydub.AudioSegment.from_mp3(music_url)
        #获取文件时长
        print(sound.duration_seconds)
# PydubTest.getAudioTimes1()

'''
    ffprobe: 下载ffmpeg     版本：5.0
    通过命令行调用，支持网络音频
'''
class FfprobeTest():
    @classmethod
    def getAudioTimes(cls, audio_path):
        __lib_subprocess = __import__('subprocess')
        __lib_json = __import__('json')
        # 没有添加系统环境变量,也可以指定ffprobe的路径
        command = "ffprobe -loglevel quiet -print_format json -show_format -show_streams -i %s" % (audio_path)
        result = __lib_subprocess.Popen(command, shell=True, stdout=__lib_subprocess.PIPE, stderr=__lib_subprocess.STDOUT)
        out = result.stdout.read()
        temp = str(out.decode('utf-8'))
        info = __lib_json.loads(temp)
        print(info['streams'][0]['duration'])
FfprobeTest.getAudioTimes(music_url)