【python爬蟲】關於ffmpeg合并報錯問題

import requests
import re
import json
import subprocess


url = 'https://www.bilibili.com/video/BV11S4y1a7X9/'
headers = {
    'referer': 'https://www.bilibili.com/',
    'user-agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/102.0.0.0 Safari/537.36'
}

response = requests.get(url=url, headers=headers)

title = re.findall('<h1 title="(.*?)" class="video-title tit">', response.text)[0]
play_info = re.findall('<script>window.__playinfo__=(.*?)</script>', response.text)[0]
print(title)
json_data = json.loads(play_info)

audio_url = json_data['data']['dash']['audio'][0]['baseUrl']
video_url = json_data['data']['dash']['video'][0]['baseUrl']
print(audio_url)
print(video_url)

audio_content = requests.get(audio_url, headers=headers).content   
video_content = requests.get(video_url, headers=headers).content    

COMMAND = f'ffmpeg -i video\\{title}.mp4 -i video\\{title}.mp3 -c:v copy -c:a aac -strict experimental video\\{title}output.mp4 '
subprocess.run(COMMAND, shell=True)

他的報錯是亂碼的，看不懂，請問各位這是什麽樣的問題？？？？