You have to have your video hosted somewhere in the net (youtube etc.), but I guess that you can load it straight from your phone to youtube (perhaps some other places too)! Even then be sure to check out if your phone deal, or whatever it is called where you live, has unlimited data transfer. Your phone (if it's a smart phone) monitors how many megabytes you've used (net surfing etc.) and if you exceed the "deal you've made" (probably a monthly amount) they'll come greedily after your wallet.
( So you cannot stream from your own computer to this forum or any other place. Anything that others can see in the net, must float somewhere in the net. )
If you are not sure, whether you can use your phone to send your vids, then just put them on your computer and upload from there to youtube or some other site. Hope this helps!