mutagen:如何在mp3，flac和mp4中检测和嵌入专辑封面

问题描述

我希望能够检测音频文件是否嵌入了专辑封面，如果没有，请向该文件添加专辑封面.我正在使用诱变剂

I'd like to be able to detect whether an audio file has embedded album art and, if not, add album art to that file. I'm using mutagen

1)检测专辑封面.是否有比此伪代码更简单的方法:

1) Detecting album art. Is there a simpler method than this pseudo code:

from mutagen import File
audio = File('music.ext')
test each of audio.pictures, audio['covr'] and audio['APIC:']
    if doesn't raise an exception and isn't None, we found album art

2)我发现这是因为将专辑封面嵌入到mp3文件中:如何使用Python?

2) I found this for embedding album art into an mp3 file:How do you embed album art into an MP3 using Python?

如何将专辑封面嵌入其他格式?

How do I embed album art into other formats?

嵌入mp4

audio = MP4(filename)
data = open(albumart, 'rb').read()

covr = []
if albumart.endswith('png'):
    covr.append(MP4Cover(data, MP4Cover.FORMAT_PNG))
else:
    covr.append(MP4Cover(data, MP4Cover.FORMAT_JPEG))

audio.tags['covr'] = covr
audio.save()

推荐答案

嵌入flac:

from mutagen.flac import File, Picture, FLAC

def add_flac_cover(filename, albumart):
    audio = File(filename)

    image = Picture()
    image.type = 3
    if albumart.endswith('png'):
        mime = 'image/png'
    else:
        mime = 'image/jpeg'
    image.desc = 'front cover'
    with open(albumart, 'rb') as f: # better than open(albumart, 'rb').read() ?
        image.data = f.read()

    audio.add_picture(image)
    audio.save()

为完整起见，检测图片

def pict_test(audio):
    try:
        x = audio.pictures
        if x:
            return True
    except Exception:
        pass
    if 'covr' in audio or 'APIC:' in audio:
        return True
    return False

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