# youtube-dl --help
Usage: youtube-dl [options] url [url...]

Options:
  General Options:
	-h, --help               print this help text and exit
	-v, --version            print program version and exit
	-U, --update             update this program to latest version
	-i, --ignore-errors      continue on download errors
	-r, --rate-limit LIMIT   download rate limit (e.g. 50k or 44.6m)
	-R, --retries RETRIES    number of retries (default is 10)
	--dump-user-agent        display the current browser identification
	--list-extractors        List all supported extractors and the URLs they
							 would handle

  Video Selection:
	--playlist-start NUMBER  playlist video to start at (default is 1)
	--playlist-end NUMBER    playlist video to end at (default is last)
	--match-title REGEX      download only matching titles (regex or caseless
							 sub-string)
	--reject-title REGEX     skip download for matching titles (regex or
							 caseless sub-string)

  Filesystem Options:
	-t, --title              use title in file name
	-l, --literal            use literal title in file name
	-A, --auto-number        number downloaded files starting from 00000
	-o, --output TEMPLATE    output filename template
	-a, --batch-file FILE    file containing URLs to download ('-' for stdin)
	-w, --no-overwrites      do not overwrite files
	-c, --continue           resume partially downloaded files
	--no-continue            do not resume partially downloaded files (restart
							 from beginning)
	--cookies FILE           file to dump cookie jar to
	--no-part                do not use .part files
	--no-mtime               do not use the Last-modified header to set the file
							 modification time
	--write-description      write video description to a .description file
	--write-info-json        write video metadata to a .info.json file

  Verbosity / Simulation Options:
	-q, --quiet              activates quiet mode
	-s, --simulate           do not download the video and do not write anything
							 to disk
	--skip-download          do not download the video
	-g, --get-url            simulate, quiet but print URL
	-e, --get-title          simulate, quiet but print title
	--get-thumbnail          simulate, quiet but print thumbnail URL
	--get-description        simulate, quiet but print video description
	--get-filename           simulate, quiet but print output filename
	--get-format             simulate, quiet but print output format
	--no-progress            do not print progress bar
	--console-title          display progress in console titlebar

  Video Format Options:
	-f, --format FORMAT      video format code
	--all-formats            download all available video formats
	--max-quality FORMAT     highest quality format to download

  Authentication Options:
	-u, --username USERNAME  account username
	-p, --password PASSWORD  account password
	-n, --netrc              use .netrc authentication data

  Post-processing Options:
	--extract-audio          convert video files to audio-only files (requires
							 ffmpeg and ffprobe)
	--audio-format FORMAT    "best", "aac" or "mp3"; best by default
	--audio-quality QUALITY  ffmpeg audio bitrate specification, 128k by default
	-k, --keep-video         keeps the video file on disk after the post-
							 processing; the video is erased by default