How to dump youtube live TV stream to file using commandline?

[MKANET]

I only know of only two ways to download a live youtube video:

The first way is using the full youtube URL using packet sniffing. This provides me a ridiculously long URL; which only works one or two times before I get a ERROR 403: Forbidden response.

For example:

wget.exe -O "C:\liveTV-flv http://r7---sn-nx57yn7r.c.youtube.com/liveplay?algorithm=throttle-factor&burst=40&cp=U0hUTVVQVl9HTENONF9NSlpHOldPTUFUX2ZQdzNt&expire=1358558622&factor=1.25&fexp=909711%2C916613%2C920704%2C912806%2C922403%2C922405%2C929901%2C913605%2C925710%2C929104%2C929110%2C908493%2C920201%2C913302%2C919009%2C911116%2C926403%2C910221%2C901451&id=L7ird1HeEjw&ip=XXX.XXX.XXX.XXX&ipbits=8&itag=34&key=yt1&ms=nxu&mt=1358534109&mv=m&newshard=yes&ns=yt-live&signature=AF2D5423930D9DF2FD214BD5DFE8B2201049FBB6.376F4E9ED9D70050FA2E1447994FB7FF47CB1B44&source=youtube&sparams=algorithm%2Cburst%2Ccp%2Cfactor%2Cid%2Cip%2Cipbits%2Citag%2Cns%2Csource%2Cupn%2Cexpire&sver=3&upn=PWDvz8C-i_w&cpn=9xjxhbO0_V_Q4bat&begin=Infinity&ptk=youtube_none"

The next way is using youtube-dl (python script). This way is very reliable and easy:

For example:

youtube-dl.exe --no-part --max-quality 22 -o C:\liveTV.flv http://www.youtube.com/watch?feature=player_embedded&v=L7ird1HeEjw

This allows me to use the share URL youtube provides. Unfortunately, this method starts to download the video starting from when the live TV event first began, instead of the current time of the live event. I dont know how to specify to download starting from current live broadcast time.

I was hoping someone could help me figure out the a consistent way to download this live TV stream starting from current time.