Get video from Youtube-DL is not working properly

Question

I'm trying to get youtube video by using youtube_dl and everything is working fine except for the fact that I only get the audio.

from youtube_dl import YoutubeDL

link = "SOME_YOUTUBE_VIDEO" # as it was only a video

with YoutubeDL({}) as ydl:
    info = ydl.extract_info(link, download=False)
    url = info['formats'][0]['url']
    title = info["title"]
    print(url, title)

Answer 1

from youtube_dl import YoutubeDL

link = "https://www.youtube.com/watch?v=Y9wBC3H4iH4"

with YoutubeDL({}) as ydl:
    info = ydl.extract_info(link, download=False)
    for i, format in enumerate(info['formats']):
        print(f"[{i}] {format['format']}")

output:

[youtube] Y9wBC3H4iH4: Downloading webpage
[0] 249 - audio only (tiny)
[1] 250 - audio only (tiny)
[2] 251 - audio only (tiny)
[3] 140 - audio only (tiny)
[4] 160 - 256x144 (144p)
[5] 278 - 256x144 (144p)
[6] 242 - 426x240 (240p)
[7] 133 - 426x240 (240p)
[8] 243 - 640x360 (360p)
[9] 134 - 640x360 (360p)
[10] 244 - 854x480 (480p)
[11] 135 - 854x480 (480p)
[12] 247 - 1280x720 (720p)
[13] 136 - 1280x720 (720p)
[14] 248 - 1920x1080 (1080p)
[15] 137 - 1920x1080 (1080p)
[16] 18 - 640x360 (360p)
[17] 22 - 1280x720 (720p)

It literally says audio only for some of the formats! Select one of the non-audio-only formats, and you won't get audio only. Note that which formats are available very much depends on which video you're trying to download.