merhabalar elimde .flv,.mp3,.mp4,3gp türünde videolar var ben bunları indirmek için header kullanmayı denedim ama işe yaramadı bu konuda bir çalışmanız varsa paylaşırsanız sevinirim.

örn link :

http://o-o---preferred---sn-u0g3uxax3vh-nv4l---v19---lscache8.c.youtube.com/videoplayback?upn=XVd8soi6quY&sparams=algorithm%2Cburst%2Ccp%2Cfactor%2Cgcr%2Cid%2Cip%2Cipbits%2Citag%2Csource%2Cupn%2Cexpire&fexp=903903%2C927900%2C924104%2C927104%2C922401%2C920704%2C912806%2C927201%2C913546%2C913556%2C925109%2C919003%2C912706%2C900816&ms=au&algorithm=throttle-factor&burst=40&ip=88.230.202.94&itag=17&gcr=tr&sver=3&mt=1350058272&mv=m&source=youtube&key=yt1&ipbits=8&factor=1.25&cp=U0hURVBTUl9GTUNONF9ITVZBOjB4ZzExZ1J4NUhm&expire=1350084013&id=bf86662d7aeb08ea&signature=69734CFBED7CE446171D12FA7F666610A144507C.56012C3FBFB5A285C8C6824D9F56B44FE0F8235D