Working fine
Code:
$ wget -O 4i-jYPMDUgc.mp4 'http://r19---sn-q4f7dnll.c.youtube.com/vi
deoplayback?fexp=924605%2C901208%2C929117%2C929123%2C929121%2C929915
%2C929906%2C925714%2C929919%2C929119%2C931202%2C932802%2C928017%2C91
2518%2C911416%2C906906%2C904476%2C930807%2C919373%2C906836%2C933701%
2C926403%2C912711%2C929606%2C910075&upn=BD19dL0VbEY&ip=99.109.97.214
&key=yt1&itag=37&mt=1369711338&ratebypass=yes&mv=m&source=youtube&sp
arams=cp%2Cid%2Cip%2Cipbits%2Citag%2Cratebypass%2Csource%2Cupn%2Cexp
ire&cp=U0hVTldOUl9KTUNONV9PSFZBOl9JdTZDSU95dHJE&ms=au&ipbits=8&newsh
ard=yes&sver=3&expire=1369734053&id=e22fa360f3035207&signature=9A8F3
91C12F70E4F9AC0E79B0CBFD2981206C67E.95EC2CD9E42623313BEF865390523023
354928'
--2013-05-27 22:27:47-- http://r19---sn-q4f7dnll.c.youtube.com/video
playback?fexp=924605%2C901208%2C929117%2C929123%2C929121%2C929915%2C9
29906%2C925714%2C929919%2C929119%2C931202%2C932802%2C928017%2C912518%
2C911416%2C906906%2C904476%2C930807%2C919373%2C906836%2C933701%2C9264
03%2C912711%2C929606%2C910075&upn=BD19dL0VbEY&ip=99.109.97.214&key=yt
1&itag=37&mt=1369711338&ratebypass=yes&mv=m&source=youtube&sparams=cp
%2Cid%2Cip%2Cipbits%2Citag%2Cratebypass%2Csource%2Cupn%2Cexpire&cp=U0
hVTldOUl9KTUNONV9PSFZBOl9JdTZDSU95dHJE&ms=au&ipbits=8&newshard=yes&sv
er=3&expire=1369734053&id=e22fa360f3035207&signature=9A8F391C12F70E4F
9AC0E79B0CBFD2981206C67E.95EC2CD9E42623313BEF865390523023354928
Resolving r19---sn-q4f7dnll.c.youtube.com (r19---sn-q4f7dnll.c.youtub
e.com)... 173.194.57.152, 2607:f8b0:4000:6::18
Connecting to r19---sn-q4f7dnll.c.youtube.com (r19---sn-q4f7dnll.c.yo
utube.com)|173.194.57.152|:80... connected.
HTTP request sent, awaiting response... 200 OK
Length: 422624641 (403M) [video/mp4]
Saving to: `4i-jYPMDUgc.mp4'
2% [ ] 9,969,279 466K/s eta 18m 12s