try use
Code:
ffmpeg -i "http://www.youtube.com/api/manifest/hls/ns/yt-live/id/L7ird1HeEjw?ipbits=0&fexp=912806,922403,922405,929901,913605,925710,929104,929110,908493,920201,913302,919009,911116,910221,901451&ip=0.0.0.0&upn=9YCCj1LKFtA&sver=3&expire=1358569422&key=yt1&signature=5D978FEC838B33DC408C808994FD9BF942093ACF.508D9B2317448210736636866F47802ABAD13B27&sparams=id,ip,ipbits,ns,expire&file=index.m3u8" -c copy t.ts