Python 如何在youtube dl和discord.py中使用关键字而不是url？

我正在编写一个通用机器人，基本上我想键入命令，然后键入歌曲名称示例：

？播放歌曲名称

，它将搜索youtube，弹出的第一个视频将下载其音频

我让机器人与正常的链接，但如果我必须得到的链接播放音乐，它失败的目的

client = discord.Client()
@client.event
async def on_message(message):
    ydl_opts = {
            'format': 'beataudio/best',
            'postprocessors': [{
                'key': 'FFmpegExtractAudio',
                'preferredcodec': 'mp3',
                'preferredquality': '192'
            }]
        }
     with youtube_dl.YoutubeDL(ydl_opts) as ydl:
          print("Downloading audio now\n")
          url: str = message.content.replace('?play ', '')
          print(url)
          ydl.download([url])

---

我以前没有使用过youtube dl，所以我不知道它是如何工作的。

一旦您得到discord搜索查询，您可以使用：

import youtube_dl  # youtube-dl-2020.3.1
import traceback, os, json
from youtube_search import YoutubeSearch  # pip install youtube_search 
"""
sources :
https://github.com/ytdl-org/youtube-dl/blob/master/README.md#embedding-youtube-dl
https://stackoverflow.com/questions/23727943/how-to-get-information-from-youtube-dl-in-python/31184514#31184514
https://stackoverflow.com/a/43143553/797495
"""

search = 'carlos paiao playback'
ydl_opts = {
    'format': 'beataudio/best',
    'postprocessors': [{
        'key': 'FFmpegExtractAudio',
        'preferredcodec': 'mp3',
        'preferredquality': '192'
    }]
}
yt = YoutubeSearch(search, max_results=1).to_json()
try:
    yt_id = str(json.loads(yt)['videos'][0]['id'])
    yt_url = 'https://www.youtube.com/watch?v='+yt_id
    with youtube_dl.YoutubeDL(ydl_opts) as ydl:
        ydl.download([yt_url])
        info = ydl.extract_info(yt_url)
        songname = info.get('title', None) + "-" + yt_id + ".mp3"
        if os.path.isfile(songname):
            print("Song Downloaded: " + songname)
        else:
            print("Error: " + songname)
except:
    pass
    print(traceback.print_exc())
    print("no results")

---

获得discord搜索查询后，可以使用：

import youtube_dl  # youtube-dl-2020.3.1
import traceback, os, json
from youtube_search import YoutubeSearch  # pip install youtube_search 
"""
sources :
https://github.com/ytdl-org/youtube-dl/blob/master/README.md#embedding-youtube-dl
https://stackoverflow.com/questions/23727943/how-to-get-information-from-youtube-dl-in-python/31184514#31184514
https://stackoverflow.com/a/43143553/797495
"""

search = 'carlos paiao playback'
ydl_opts = {
    'format': 'beataudio/best',
    'postprocessors': [{
        'key': 'FFmpegExtractAudio',
        'preferredcodec': 'mp3',
        'preferredquality': '192'
    }]
}
yt = YoutubeSearch(search, max_results=1).to_json()
try:
    yt_id = str(json.loads(yt)['videos'][0]['id'])
    yt_url = 'https://www.youtube.com/watch?v='+yt_id
    with youtube_dl.YoutubeDL(ydl_opts) as ydl:
        ydl.download([yt_url])
        info = ydl.extract_info(yt_url)
        songname = info.get('title', None) + "-" + yt_id + ".mp3"
        if os.path.isfile(songname):
            print("Song Downloaded: " + songname)
        else:
            print("Error: " + songname)
except:
    pass
    print(traceback.print_exc())
    print("no results")

---

没有找到我要找的东西@ZacharyCraigdid没有找到我要找的东西@扎查里克雷格