使用yt_dlp下载油管视频

yt-dlp工具是一个开源的项目

项目地址： https://github.com/yt-dlp/yt-dlp
下载地址： https://github.com/yt-dlp/yt-dlp/releases

查看支持的下载格式：

yt-dlp -F https://www.youtube.com/watch?v=6Q0Pd53mojY

输出如下：

[youtube] Extracting URL: https://www.youtube.com/watch?v=6Q0Pd53mojY
[youtube] 6Q0Pd53mojY: Downloading webpage
[youtube] 6Q0Pd53mojY: Downloading android player API JSON
[youtube] 6Q0Pd53mojY: Downloading player 36754c51
[info] Available formats for 6Q0Pd53mojY:
ID  EXT   RESOLUTION FPS CH │  FILESIZE  TBR PROTO │ VCODEC         VBR ACODEC      ABR ASR MORE INFO
─────────────────────────────────────────────────────────────────────────────────────────────────────────────
sb2 mhtml 48x27        0    │                mhtml │ images                                 storyboard
sb1 mhtml 60x45        1    │                mhtml │ images                                 storyboard
sb0 mhtml 120x90       1    │                mhtml │ images                                 storyboard
139 m4a   audio only      2 │   1.36MiB  49k dash  │ audio only         mp4a.40.5   49k 22k low, m4a_dash
249 webm  audio only      2 │   1.48MiB  53k dash  │ audio only         opus        53k 48k low, webm_dash
250 webm  audio only      2 │   1.98MiB  71k dash  │ audio only         opus        71k 48k low, webm_dash
140 m4a   audio only      2 │   3.61MiB 130k dash  │ audio only         mp4a.40.2  130k 44k medium, m4a_dash
251 webm  audio only      2 │   3.94MiB 141k dash  │ audio only         opus       141k 48k medium, webm_dash
17  3gp   176x144      8  1 │   2.19MiB  78k https │ mp4v.20.3      78k mp4a.40.2    0k 22k 144p
394 mp4   192x144     30    │   1.39MiB  50k dash  │ av01.0.00M.08  50k video only          144p, mp4_dash
160 mp4   192x144     30    │   1.47MiB  53k dash  │ avc1.4d400c    53k video only          144p, mp4_dash
278 webm  192x144     30    │   2.02MiB  72k dash  │ vp9            72k video only          144p, webm_dash
395 mp4   320x240     30    │   2.56MiB  92k dash  │ av01.0.00M.08  92k video only          240p, mp4_dash
133 mp4   320x240     30    │   2.83MiB 101k dash  │ avc1.4d400d   101k video only          240p, mp4_dash
242 webm  320x240     30    │   3.19MiB 114k dash  │ vp9           114k video only          240p, webm_dash
396 mp4   480x360     30    │   4.71MiB 169k dash  │ av01.0.01M.08 169k video only          360p, mp4_dash
134 mp4   480x360     30    │   5.65MiB 203k dash  │ avc1.4d401e   203k video only          360p, mp4_dash
18  mp4   480x360     30  2 │ ~ 9.47MiB 332k https │ avc1.42001E   332k mp4a.40.2    0k 44k 360p
243 webm  480x360     30    │   6.83MiB 245k dash  │ vp9           245k video only          360p, webm_dash
397 mp4   640x480     30    │   8.26MiB 296k dash  │ av01.0.04M.08 296k video only          480p, mp4_dash
135 mp4   640x480     30    │  10.11MiB 363k dash  │ avc1.4d401e   363k video only          480p, mp4_dash
244 webm  640x480     30    │  10.15MiB 364k dash  │ vp9           364k video only          480p, webm_dash
22  mp4   720x540     30  2 │ ~14.80MiB 518k https │ avc1.64001F   518k mp4a.40.2    0k 44k 480p
136 mp4   720x540     30    │  10.85MiB 389k dash  │ avc1.4d401f   389k video only          480p, mp4_dash
247 webm  720x540     30    │  11.30MiB 405k dash  │ vp9           405k video only          480p, webm_dash

如果我只想下载音频，可以看到139 m4a audio only信息，用139这个编号就可以下载：

yt-dlp -f139 https://www.youtube.com/watch?v=6Q0Pd53mojY