format - Trouble with downloading with youtube -dl (python)

Question

I had a lot of time so I made converter with gui but I am stuck at this problem for a week now and kinda losing my mind on it. So i tried a lot of things in cmd and in python but it always downloads in WEBM Video File (.webm) or mp4. I dont understand why does it do it becouse in code I added preferences and in them putted only audio and sayd that format is mp3.

ydl_opts = {'format': 'bestaudio/best',
            'extractaudio': True,
            'audioformat' : "mp3",
                }
with youtube_dl.YoutubeDL(ydl_opts) as ydl:
    ydl.download(['link'])

Hope you can help.

Answer 1

等待大神解答