1、首先下载ffmpeg软件

链接：https://pan.baidu.com/s/1-YjQqPq22Y5qc6AD4zODrg 
提取码：sith 
或者：https://ffmpeg.org/download.html

2、下载后解压，将文件夹数据放到对应的目录中，然后将这个路径设置到环境变量的path中

如图：

在cmd中输入ffmpeg，出现如下既操作成功，如图：

3、相关python的脚本：

import subprocess


def download_m3u8(url, output_file):
    ffmpeg_cmd = f'ffmpeg -protocol_whitelist "file,http,https,tcp,tls" -i "{url}" -c copy "{output_file}"'
    subprocess.call(ffmpeg_cmd, shell=True)
    print(ffmpeg_cmd)

2023-07-28 start:

# This is a sample Python script.
import subprocess
# Press Shift+F10 to execute it or replace it with your code.
# Press Double Shift to search everywhere for classes, files, tool windows, actions, and settings.


def print_hi(name):
    import subprocess

    m3u8_url = "https://example.com/encrypted_video.m3u8"
    key_url = "https://example.com/key.key"
    output_filename = "output.mp4"

    subprocess.call(['ffmpeg', '-i', m3u8_url, '-c', 'copy', '-bsf:a', 'aac_adtstoasc', '-hls_key_info_file',
                     
                     '<(echo "' + key_url + ' ' + 'keyfile.key")', output_filename])

    # Use a breakpoint in the code line below to debug your script.
    print(f'Hi, {name}')  # Press Ctrl+F8 to toggle the breakpoint.


# Press the green button in the gutter to run the script.
if __name__ == '__main__':
    m3u8_url = "fdsafds"
    output_filename = "gfdgfsdgfd.mp4"

    subprocess.call(['ffmpeg', '-i', m3u8_url, '-c', 'copy', output_filename])
    print_hi('PyCharm')

import requests
import urllib

m3u8_url = "https://example.com/video.m3u8"
output_directory = "output/"

response = requests.get(m3u8_url)
lines = response.text.strip().split('\n')
ts_urls = [line for line in lines if line.endswith('.ts')]

for i, ts_url in enumerate(ts_urls):
    output_filename = f"{i}.ts"
    output_path = output_directory + output_filename
    urllib.request.urlretrieve(ts_url, output_path)
# See PyCharm help at https://www.jetbrains.com/help/pycharm/

end