syedameed,
You can stream via HDMI out as long as you use a capture device, of which we recommend the Blackmagic line which you can browse in our
store. You should choose the proper capture device depending on your OS and computer's available inputs (USB3, Thunderbolt, USB2)
If you want to stream via composite, you would need a Grass Valley ADVC-110, and a computer with a Firewire port.