유투브 동영상 파일 다운로드
# apt-get install youtube-dl
# youtube-dl https://www.youtube.com/watch?v=wKi0OBcBqho
[youtube] Setting language
[youtube] wKi0OBcBqho: Downloading webpage
[youtube] wKi0OBcBqho: Downloading video info webpage
[youtube] wKi0OBcBqho: Extracting video information
[download] Destination: 여자친구의 어느 멋진 날 E01 151117 MBC Music-wKi0OBcBqho.mp4
[download] 100% of 845.44MiB in 00:17

# ls -lh
-rw-r--r-- 1 root root 846M 11월 20 02:08 여자친구의 어느 멋진 날 E01 151117 MBC Music-wKi0OBcBqho.mp4


유투브 동영상 파일 mp3 파일로 다운로드
# youtube-dl -t --extract-audio --audio-format mp3  https://www.youtube.com/watch?v=wKi0OBcBqho
[youtube] Setting language
[youtube] wKi0OBcBqho: Downloading webpage
[youtube] wKi0OBcBqho: Downloading video info webpage
[youtube] wKi0OBcBqho: Extracting video information
[download] Destination: 여자친구의 어느 멋진 날 E01 151117 MBC Music-wKi0OBcBqho.m4a
[download] 100% of 40.98MiB in 00:00
[avconv] Destination: 여자친구의 어느 멋진 날 E01 151117 MBC Music-wKi0OBcBqho.mp3
Deleting original file 여자친구의 어느 멋진 날 E01 151117 MBC Music-wKi0OBcBqho.m4a (pass -k to keep)

# ls -lh
-rw-r--r-- 1 root root  33M 11월 20 01:31 여자친구의 어느 멋진 날 E01 151117 MBC Music-wKi0OBcBqho.mp3

동영상 플레이어로 재생


※ 단, 저작권 보호요청이 들어간 자료는 다운로드가 막혀있음
root@hl-210-34:~# youtube-dl -t --extract-audio --audio-format mp3  https://www.youtube.com/watch?v=0VKcLPdY9lI
[youtube] Setting language
[youtube] 0VKcLPdY9lI: Downloading webpage
[youtube] 0VKcLPdY9lI: Downloading video info webpage
[youtube] 0VKcLPdY9lI: Extracting video information
[youtube] 0VKcLPdY9lI: Encrypted signatures detected.
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'

WARNING: Warning: Falling back to static signature algorithm
WARNING: Automatic signature extraction failed: Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 957, in _decrypt_signature
    video_id, player_url, len(s)
  File "/usr/lib/python2.7/dist-packages/youtube_dl/extractor/youtube.py", line 331, in _extract_signature_function
    player_type = id_m.group('ext')
AttributeError: 'NoneType' object has no attribute 'group'
...................................
...................................
WARNING: Warning: Falling back to static signature algorithm
ERROR: unable to download video data: HTTP Error 403: Forbidden

Window : http://rg3.github.io/youtube-dl/download.html

추가:
 - 웹에서 다운로드 http://en.savefrom.net/