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软件应用

youtube-dl​

下载 youtube 视频的命令行工具。

安装​

sudo curl -L https://yt-dl.org/downloads/latest/youtube-dl -o /usr/local/bin/youtube-dl
sudo chmod a+rx /usr/local/bin/youtube-dl

安装 ffmpeg​

apt install ffmpeg

安装 aria2​

多线程下载工具。

apt install aria2

使用​

查看视频可下载的格式​

youtube-dl -F https://www.youtube.com/watch?v=Z82kpOCHEPs

[youtube] Z82kpOCHEPs: Downloading webpage
[info] Available formats for Z82kpOCHEPs:
format code  extension  resolution note
249          webm       audio only tiny   55k , webm_dash container, opus @ 55k (48000Hz), 2.37MiB
250          webm       audio only tiny   72k , webm_dash container, opus @ 72k (48000Hz), 3.13MiB
140          m4a        audio only tiny  129k , m4a_dash container, mp4a.40.2@129k (44100Hz), 5.57MiB
251          webm       audio only tiny  143k , webm_dash container, opus @143k (48000Hz), 6.17MiB
394          mp4        256x144    144p   71k , mp4_dash container, av01.0.00M.08@  71k, 25fps, video only, 3.10MiB
160          mp4        256x144    144p   82k , mp4_dash container, avc1.4d400c@  82k, 25fps, video only, 3.57MiB
278          webm       256x144    144p   93k , webm_dash container, vp9@  93k, 25fps, video only, 4.02MiB
133          mp4        426x240    240p  131k , mp4_dash container, avc1.4d4015@ 131k, 25fps, video only, 5.64MiB
395          mp4        426x240    240p  142k , mp4_dash container, av01.0.00M.08@ 142k, 25fps, video only, 6.14MiB
242          webm       426x240    240p  180k , webm_dash container, vp9@ 180k, 25fps, video only, 7.77MiB
134          mp4        640x360    360p  251k , mp4_dash container, avc1.4d401e@ 251k, 25fps, video only, 10.83MiB
396          mp4        640x360    360p  290k , mp4_dash container, av01.0.01M.08@ 290k, 25fps, video only, 12.49MiB
243          webm       640x360    360p  329k , webm_dash container, vp9@ 329k, 25fps, video only, 14.17MiB
135          mp4        854x480    480p  379k , mp4_dash container, avc1.4d401e@ 379k, 25fps, video only, 16.35MiB
244          webm       854x480    480p  510k , webm_dash container, vp9@ 510k, 25fps, video only, 21.97MiB
397          mp4        854x480    480p  516k , mp4_dash container, av01.0.04M.08@ 516k, 25fps, video only, 22.25MiB
136          mp4        1280x720   720p  695k , mp4_dash container, avc1.4d401f@ 695k, 25fps, video only, 29.95MiB
247          webm       1280x720   720p  891k , webm_dash container, vp9@ 891k, 25fps, video only, 38.36MiB
398          mp4        1280x720   720p 1035k , mp4_dash container, av01.0.05M.08@1035k, 25fps, video only, 44.56MiB
399          mp4        1920x1080  1080p 1863k , mp4_dash container, av01.0.08M.08@1863k, 25fps, video only, 80.23MiB
248          webm       1920x1080  1080p 2404k , webm_dash container, vp9@2404k, 25fps, video only, 103.51MiB
137          mp4        1920x1080  1080p 2681k , mp4_dash container, avc1.640028@2681k, 25fps, video only, 115.43MiB
18           mp4        640x360    360p  684k , avc1.42001E, 25fps, mp4a.40.2 (44100Hz), 29.47MiB
22           mp4        1280x720   720p  825k , avc1.64001F, 25fps, mp4a.40.2 (44100Hz) (best)

由上面的信息可以看到，视频和音频是分开的，所以需要我们先安装 ffmpeg，下载时需同时选择一个视频格式和一个音频格式，下载完成后 ffmpeg 会自动进行合并。

下载​

youtube-dl -f 137+140 https://www.youtube.com/watch?v=Z82kpOCHEPs --external-downloader aria2c --external-downloader-args "-x 16  -k 1M"
  • 137+140： 这分别是一个视频格式和一个音频格式的 format code；
  • --external-downloader aria2c： 调用外部下载工具 aria2c；
  • --external-downloader-args： 下载工具参数；
  • -x 16： 启用aria2 16个线程，最多就支持16线程
  • -k 1M： 指定块大小为 1M。

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Linux 密码生成器

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命令行Google翻译

trans