不论在哪方面，书都是有用的，尤其是人们想不到它有用的时候。
——弗兰茨·卡夫卡
“yt-dlp” Format Selection examples
# Download and merge the best video-only format and the best audio-only format,
How to Fix: “dyld: Library not loaded: /usr/local/opt/x264/lib/libx264.155.dylib” when running ffmpeg
问题描述：
How to Fix “WARNING: There was an error checking the latest version of pip.”
当前环境：macOS Big Sur 11.6.6 / python 2.7.16 + python 3.10.6
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