python 检查音频文件类型，MP3 或 FLAC

Question

I want to check if a audio file to see if its MP3 or FLAC the checks only have to be basic but I want to go beyond simply checking the file extensions

os.path.splitext

Works okay but no good if the file doesn't have an extensions written in or someone passes a file with a fake extension

I've tried but it just returns None

sndhdr.what(file)

I've also tried using magic but it returns 'application/octet-stream' which isn't much use.

magic.from_file(file, mime=True)

I've read Mutagen could be good for this but so far failed to find any function that outputs the audio encoding as MP3 or FLAC

Answer 1

To find the File format including audio, video, txt and more, you can use fleep python library to check the audio file format:

First you need to install the library:

pip install fleep

Here is a test code:

import fleep

with open("vida.flac", "rb") as file:
    info = fleep.get(file.read(128))

print(info.type)
print(info.extension)
print(info.mime) 

Here is the results:

['audio']
['flac']
['audio/flac']

Even if the file doesn't have an extension or someone passes a file with a fake extension, it will detect and return.

Here I have copied the vida.wav file to dar.txt and also removed the extension

import fleep

with open("dar", "rb") as file:
    info = fleep.get(file.read(128))

print(info.type)
print(info.extension) 
print(info.mime) 

The result is still the same.

['audio']
['flac']
['audio/flac']

---

Credit to the author of the library https://github.com/floyernick/fleep-py

Answer 2

This might help you getting started

21.9. sndhdr — Determine type of sound file

https://docs.python.org/2/library/sndhdr.html

Answer 3

您可以阅读 mp3 和 flac 的文件规范，然后可以实现一个检查器，将 mp3 读取和解析为二进制文件。具有类似目标的可修改示例是here