## Video Format Options:
-f, --format FORMAT video format code, specify the order of
- preference using slashes: "-f 22/17/18".
- "-f mp4" and "-f flv" are also supported.
- You can also use the special names "best",
- "bestvideo", "bestaudio", "worst",
- "worstvideo" and "worstaudio". By default,
- youtube-dl will pick the best quality.
+ preference using slashes: -f 22/17/18 . -f
+ mp4 , -f m4a and -f flv are also
+ supported. You can also use the special
+ names "best", "bestvideo", "bestaudio",
+ "worst", "worstvideo" and "worstaudio". By
+ default, youtube-dl will pick the best
+ quality. Use commas to download multiple
+ audio formats, such as -f
+ 136/137/mp4/bestvideo,140/m4a/bestaudio
--all-formats download all available video formats
--prefer-free-formats prefer free video formats unless a specific
one is requested