miszczu: thanks a lot for the idea!
Finally, i get it to work. Jumping in google, i locate a way to get the stream m3u8 of a live channel in youtube. Leave the info here.
I use (under ubuntu) livestreamer
Here is the channel i want (its an open air channel in my country, not an illegal link)
The origin URL:
https://www.youtube.com/watch?v=cyOU1tX664Q
in console, with livestreamer, simply putting (note 240p is the selected resolution of the channel, can be changed)
Code:
alejandro@alejandro-MS-7388:~/Escritorio$ livestreamer https://www.youtube.com/watch?v=cyOU1tX664Q 240p --stream-url
i get
Code:
http://manifest.googlevideo.com/api/manifest/hls_playlist/id/cyOU1tX664Q.1/itag/92/source/yt_live_broadcast/ratebypass/yes/live/1/cmbypass/yes/gir/yes/dg_shard/Y3lPVTF0WDY2NFEuMQ.92/hls_chunk_host/r2---sn-j5cax8pnpvo-x1xr.googlevideo.com/gcr/ar/pmbypass/yes/playlist_type/DVR/maudio/1/mm/32/ms/lv/mv/m/pcm2cms/yes/pl/20/dover/2/upn/9XZYihQUlOU/sver/3/fexp/900720,907263,908213,934954,936118,938028,9408288,9408710,947233,948124,952612,952637,957201/mt/1430262602/ip/[HEREAPPEARSMYPUBLICIP]/ipbits/0/expire/1430284254/sparams/ip,ipbits,expire,id,itag,source,ratebypass,live,cmbypass,gir,dg_shard,hls_chunk_host,gcr,pmbypass,playlist_type,maudio,mm,ms,mv,pcm2cms,pl/signature/31AD79AC02EDB0BBCCE3458870E841426B94CD9B.637E7BB9DAD26B20E821C0EDF4D284DB7C698EA2/key/dg_yt0/file/index.m3u8
Adding this URL to my playlist, takes about 10 secs to get the live stream, but works perfect!
Conclusion:
Looks like the stream is allowed to my actual ip, but, if it not change, stream works perfect.
Thanks all for your answers, and i hope this info can be usefull to anyone.
Regards