In order to broadcast over the Internet, the signal is routed to a piece of software called a live encoder. When someone subscribes to a broadcast, they can watch as it streams live. The Blackmagic Intensity Pro is a professional-grade graphics card that can be used for this purpose. This card has high-definition multimedia interface (HDMI) inputs, but you will need to use its composite inputs as HDMI is not suitable for broadcasting. Typical broadcasting input devices include video cameras and game consoles.
- Skill level:
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Things you need
- Blackmagic Intensity Pro
- Blackmagic Media Express (included)
- Live encoder (Adobe Flash Live Media Encoder recommended)
- Sound server (Virtual Audio Cable recommended)
- Mixing, synchronisation, and splitting tool (VH Multi Camera Studio recommended)
- Camera or other input device that uses component cables
- Component cable
- Female RCA - to - male 1/8" adaptor
Plug one end of a component cable into the input device, and plug the other end(s) into the component video jacks on the Intensity card. Match red to red, blue to blue, and green to green.
Plug the audio RCA outs (red and white) coming from your input device into the female jacks on the RCA-to-1/8" adaptor and plug the male end of the adaptor into your computer's "Mic/Line-In" port.
Click "Start," then "Control Panel," then double-click "Blackmagic Control Panel" to open the Blackmagic Control Panel.
Click the drop-down menu next to "Set input:" and select "Y, R-Y, B-Y Video & Analog RCA Audio."
Click the drop-down menu next to "Set Output:" and select "HDMI & Y, R-Y, B-Y." Click "OK" to save your changes.
Click the desktop icon for Blackmagic Media Express to launch it. Alternatively, click "Start," then "All Programs," and select Blackmagic Media Express from the programs list.
Click "Edit," then "Preferences" to open the "Preferences" dialogue.
Click the "Browse" button next to "Capture audio and video to:" and navigate to the folder where you wish to capture audio and video and click "OK."
Click the "Browse" button next to "Capture still frames to:" and navigate to the same folder as in the previous step and click "OK."
Click "OK" to save your changes and exit out of the "Preferences" dialogue.
Click the desktop icon for the mixing, syncing, and splitting tool to launch it or select it from the "Programs" list.
Click "File," then "Add Camera," then "Decklink Video Capture." At this point you should see the video being captured somewhere in the mixing, syncing, and splitting tool.
Click "View," then "Resolution," and set the resolution to "1280 x 720 - HDTV (video) 16:9."
Click "Frame Rate," and set the frame rate you prefer. Recommended frame rates are "29.97" or "59.94."
Double-click the desktop icon for the live encoder or select it from the programs list to launch it.
Click "Video Device" and select the mixing, syncing, splitting tool as the video input device. You should now see the video being captured somewhere in the live encoder.
Double-click the desktop icon for the sound server or select it from the programs list to launch it.
Click the drop-down menu next to "Wave in" and select "Mic/Line-in." Under "Wave out," select "Line 1."
Click "Audio Device" in the live encoder and select "Line 1" from the sound server. At this point you should be broadcasting.
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