在Python中，你可以使用aiohttp库和asyncio进行异步HTTP请求，以及使用ffmpeg库对m3u8文件进行处理。首先，确保安装了以下库：
pip install aiohttp
pip install ffmpeg-python
然后，你可以编写一个异步下载m3u8的程序：
import os
import asyncio
import aiohttp
import ffmpeg
async def download_segment(session, url, filename):
async with session.get(url) as response:
with open(filename, 'wb') as f:
while True:
chunk = await response.content.read(1024)
if not chunk:
break
f.write(chunk)
async def download_m3u8(url, output):
async with aiohttp.ClientSession() as session:
async with session.get(url) as response:
m3u8_content = await response.text()
base_url = url.rsplit('/', 1)[0] + '/'
lines = m3u8_content.splitlines()
tasks = []
for i, line in enumerate(lines):
if line.startswith('#'):
continue
filename = f'segment_{
i}.ts'
segment_url = base_url + line
tasks.append(asyncio.ensure_future(download_segment(session, segment_url, filename)))
await asyncio.gather(*tasks)
input_files = '|'.join([f'segment_{
i}.ts' for i in range(len(tasks))])
ffmpeg.concat(input_files, output, vcodec='copy', acodec='copy', safe=0).run()
for i in range(len(tasks)):
os.remove(f'segment_{
i}.ts')
if __name__ == "__main__":
m3u8_url = 'https://your-m3u8-url.m3u8'
output_file = 'output.mp4'
loop = asyncio.get_event_loop()
loop.run_until_complete(download_m3u8(m3u8_url, output_file))
确保将m3u8_url替换为你要下载的m3u8文件的URL。这个程序将下载m3u8文件中的所有片段，并将它们合并到一个名为output.mp4的输出文件中。
请注意，这个程序可能需要根据你的需求进行一定的修改，例如处理加密的m3u8文件。
如果您想要下载加密的m3u8文件，您需要处理KEY文件。以下是一个修改后的程序，用于处理加密的m3u8文件。为了解密，我们将使用cryptography库，因此请确保安装了这个库：
pip install cryptography
以下是一个处理加密的m3u8文件的示例程序：
import os
import re
import asyncio
import aiohttp
import ffmpeg
from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
from cryptography.hazmat.primitives import serialization, hashes
from cryptography.hazmat.backends import default_backend
async def download_key(session, url):
async with session.get(url) as response:
key_data = await response.read()
return key_data
async def download_and_decrypt_segment(session, url, key, iv, filename):
async with session.get(url) as response:
encrypted_data = await response.read()
cipher = Cipher(algorithms.AES(key), modes.CBC(iv), backend=default_backend())
decryptor = cipher.decryptor()
decrypted_data = decryptor.update(encrypted_data) + decryptor.finalize()
with open(filename, 'wb') as f:
f.write(decrypted_data)
async def download_m3u8(url, output):
async with aiohttp.ClientSession() as session:
async with session.get(url) as response:
m3u8_content = await response.text()
base_url = url.rsplit('/', 1)[0] + '/'
lines = m3u8_content.splitlines()
key = None
iv = None
tasks = []
for i, line in enumerate(lines):
if line.startswith('#EXT-X-KEY'):
key_url = re.search(r'URI="(.+?)"', line).group(1)
if not key_url.startswith('http'):
key_url = base_url + key_url
key = await download_key(session, key_url)
iv = bytes.fromhex(re.search(r'IV=0x(.+)', line).group(1))
elif line.startswith('#'):
continue
else:
filename = f'segment_{
i}.ts'
segment_url = base_url + line
tasks.append(asyncio.ensure_future(download_and_decrypt_segment(session, segment_url, key, iv, filename)))
await asyncio.gather(*tasks)
input_files = '|'.join([f'segment_{
i}.ts' for i in range(len(tasks))])
ffmpeg.concat(input_files, output, vcodec='copy', acodec='copy', safe=0).run()
for i in range(len(tasks)):
os.remove(f'segment_{
i}.ts')
if __name__ == "__main__":
m3u8_url = 'https://your-encrypted-m3u8-url.m3u8'
output_file = 'output.mp4'
loop = asyncio.get_event_loop()
loop.run_until_complete(download_m3u8(m3u8_url, output_file))
这个程序将下载加密的m3u8文件中的所有片段，并解密它们。然后将解密后的片段合并到名为output.mp4的输出文件中。请确保将m3u8_url替换为要下载的加密m3u8文件的URL。
请注意，此代码可能需要根据您的需求进行调整，例如处理不同加密类型、IV的来源等。