python - 从 YouTube-DL 下载的音频文件已损坏

标签 python python-3.x ffmpeg youtube-dl

我编写了一小段代码，使用 YouTube-DL 从 YouTube 下载音频和视频。这是我的代码:

from __future__ import unicode_literals
import youtube_dl

link = input("Enter the video link:")

while True:
    choice = input("Enter a for audio file, v for video file:")
    if choice == "a" or choice == "v":
        break

ydl_opts = {}

if choice == "a":
    ydl_opts = {
        'format': 'bestaudio/best',
        'postprocessors': [{
            'key': 'FFmpegExtractAudio',
            'preferredcodec': 'mp3',
            'preferredquality': '192',
        }],
    }
else:
    ydl_opts = {'format':137}
    
with youtube_dl.YoutubeDL(ydl_opts) as ydl:
    info_dict = ydl.extract_info(link, download=False)
    video_title = info_dict.get('title', None)

if choice == "a":
    path = f'D:\\DwnldsYT\\{video_title}.mp3'
if choice == "v":
    path = f'D:\\DwnldsYT\\{video_title}.mp4'

ydl_opts.update({'outtmpl':path})

with youtube_dl.YoutubeDL(ydl_opts) as ydl:
    ydl.download([link])

这很好用。我能够播放下载的音频。但是当我尝试读取相同的音频文件时，它显示一个错误。

代码:

from pydub import AudioSegment

song = AudioSegment.from_mp3("D:\\DwnldsYT\\Cartoon - On & On (feat. Daniel Levi) [NCS Release].mp3")

输出:

Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[mp3float @ 000001f2425c2500] Header missing
Error while decoding stream #0:0: Invalid data found when processing input
[abuffer @ 000001f242280300] Value inf for parameter 'time_base' out of range [0 - 2.14748e+09]
    Last message repeated 3 times
[abuffer @ 000001f242280300] Error setting option time_base to value 1/0.
[graph_0_in_0_0 @ 000001f242280e80] Error applying options to the filter.
Error reinitializing filters!
Error while filtering: Result too large
Finishing stream 0:0 without any data written to it.
[abuffer @ 000001f242280300] Value inf for parameter 'time_base' out of range [0 - 2.14748e+09]
    Last message repeated 3 times
[abuffer @ 000001f242280300] Error setting option time_base to value 1/0.
[graph_0_in_0_0 @ 000001f242280e80] Error applying options to the filter.
Error configuring filter graph
Conversion failed!

这是因为下载的音频已损坏吗？以及如何解决这个问题呢？任何帮助，将不胜感激。谢谢!

最佳答案

您的音频文件可能未编码为 MP3。大概是AAC (通常具有文件扩展名 .aac )，这是 .mp4 的默认格式以及 AVC 视频编解码器和 YouTube。

而不是 AudioSegment.from_mp3(path)尝试做AudioSegment.from_file(path)它会自行检测格式或 AudioSegment.from_file(path, format = 'aac')强制它解码 AAC。

您还可以使用 FFMpeg 来检测格式通过运行ffmpeg -i filename.mp3 ，对于 MP3，它应该输出类似 Stream #0:0: Audio: mp3, 44100 Hz, stereo, fltp, 320 kb/s 的内容，对于其他格式，它将是非 mp3字符串。

可能youtube-dl如果您确实只需要 MP3，库有一些选项总是强制重新编码为 MP3，但要注意重新转换会损失一些质量。现在您的选项包含 preferred MP3这个词，意味着它更喜欢MP3下载，但不强制这种输出格式。

如果你不介意是MP3还是AAC，那么就保持原来的youtube格式，这样你会保持最好的质量，你也可以用 .aac 重命名文件。为了清晰起见，扩展。

如果您希望稍后处理 Youtube 下载的文件，例如通过 8D Audio Site ，那么为了在处理时不损失质量，您需要将文件转换为某种无损格式，例如 WAV。您可以使用 FFMpeg 来执行此操作工具，像这样 ffmpeg -i filename.aac filename.wav .

还有8D Audio Site有20MB文件大小限制，因此您可能需要拆分 WAV 文件。为了分成每个 30 秒的部分，您需要运行 ffmpeg -i filename.wav -f segment -segment_time 30 -c copy "filename%03d.wav"然后上传并处理每个部分。您可以随后使用 sox 连接处理后的 WAV如sox sound0*.wav soundall.wav 。并转换为一些压缩但无损的格式，例如 FLAC如ffmpeg -i soundall.wav soundall.flac .

所有转换/分割/合并命令都可以使用Python的标准模块轻松自动化subprocess 。例如。运行类似 ffmpeg -i sound.mp3 sound.wav 的任何命令你只需在Python中做一行 subprocess.run(['ffmpeg', '-i', 'sound.mp3', 'sound.wav'], check = True) .

所有专业人士都以某种无损格式(如 WAV 或 FLAC)编辑和存储音频文件，以免在处理的每个阶段都损失质量，因此这是一个很好的做法，特别是如果您想对文件进行 8D 处理，并且将 MP3 重新转换几个有时会是一个坏主意。

如果this library正确地进行 8D 转换，那么我的下一个代码将进行正确的 WAV 转换，它只是该库仅用于 WAV 的最小工作子代码。

Try it online! 

# Needs: python -m pip install pydub numpy

def ConvertTo8D(input_file_name, output_file_name, *, period = 200):
    import numpy as np
    from pydub import AudioSegment
    
    if period < 0:
        period = -period
    elif period == 0:
        period = 200
        
    audio = AudioSegment.from_file(input_file_name)
    audio = audio + AudioSegment.silent(duration = 150)
    
    eightD = AudioSegment.empty()
    pan = 0.9 * np.sin(np.linspace(0, 2. * np.pi, period))

    for i, chunk in enumerate(audio[::100]):
        if len(chunk) < 100:
            continue
        newChunk = chunk.pan(pan[i % period])
        eightD = eightD + newChunk

    eightD.export(output_file_name, format = output_file_name[output_file_name.rfind('.') + 1:])

# Test Usage
ConvertTo8D('sound.wav', 'sound-8D.wav')

关于python - 从 YouTube-DL 下载的音频文件已损坏，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/64085443/

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