Youtube-dl custom format download

youtube-dl.sh

youtube-dl -F http://www.youtube.com/watch?v=3JZ_D3ELwOQ
output:

[youtube] Setting language
[youtube] 3JZ_D3ELwOQ: Downloading webpage
[youtube] 3JZ_D3ELwOQ: Downloading video info webpage
[youtube] 3JZ_D3ELwOQ: Extracting video information
[info] Available formats for 3JZ_D3ELwOQ:
format code extension resolution  note 
171         webm      audio only  DASH webm audio , audio@ 48k (worst)
140         m4a       audio only  DASH audio , audio@128k
160         mp4       192p        DASH video 
133         mp4       240p        DASH video 
134         mp4       360p        DASH video 
135         mp4       480p        DASH video 
136         mp4       720p        DASH video 
137         mp4       1080p       DASH video 
17          3gp       176x144     
36          3gp       320x240     
5           flv       400x240     
43          webm      640x360     
18          mp4       640x360     
22          mp4       1280x720    (best)
You can choose best and type

youtube-dl -f 22 http://www.youtube.com/watch?v=3JZ_D3ELwOQ