How to Produce a Webcast… part 5


Video Mixer

In part 4 of my how-to series, I spoke about mixing various audio sources together.  In this one I will describe how to mix your various video signals together with the mixed audio to produce a final product.

Once again, due to intensive research, I discovered a wonderful product which does exactly what I’m after.  According to their website:  “VidBlaster is a state-of-the-art live video production tool” and I would totally agree.  This single tool replaces tens of thousands of dollars worth of physical video mixing equipment into one very easy to use piece of software.  When used on an appropriately fast computer, you can produce Full-HD LIVE broadcasts. 

During the first episode of Week In Review, we had spent too much money on needed audio and video equipment that we were broke.  But by our second episode we had enough capital to purchase the Home version of VidBlaster.

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As you can see from the image on the right, our home version limits us to 7 modules.  Based on the hardware we have, here are the seven modules we chose and why:

  1. Preview allows us to monitor the signal output.  This is similar to the “headphones” connector on our audio mixer.  Since we want to produce a 720p broadcast, our preview window is sized appropriately.
  2. Audio is a module which we designate the audio source that will be feed into the broadcast.  I have chosen the rear Line In blue plug on my sound card since that is where I have the Main output of the mixer going.  We can monitor the sound level with this module and modify it as needed on the fly.
  3. Streamer is used to link our broadcast to our uStream LIVE broadcast channel.  It only has Start/Stop buttons with additional options under the right click menu.  These include our username/password and our chosen LIVE broadcaster (uStream in our case).
  4. Recorder, this module is used to capture our broadcast to a video file for later post-production within Windows Live Movie Maker (covered in part 8 of this series).  This module also includes some basic controls for starting/stopping and saving our broadcast.  It also has an option for uploading the video, but I want to add starting and ending credits which I do in post production because of the Home Edition of VidBlaster I own.  Once we have enough to purchase the Professional Edition we can add our starting and ending credits within the live broadcast itself.
  5. Camera 1 which I have configured to pull from the Microsoft Cinema camera pointed at David’s location.
  6. Camera 2 is configured to pull from my other Microsoft Cinema camera which is pointed at my location.
  7. Camera 3 is configured for Screen Capture mode.  Since we have the 7 module limitation this module changes based on how our broadcast is planned.  Currently our co-host Eric doesn’t have a computer and we are using our Skype to call his cell phone.  This configuration allows me to display YouTube videos, websites, or anything else I can call up on it on a LIVE broadcast.

Our upgrade plan is pretty easy to guess.  The Professional Edition of VidBlaster increases the module limit to 25 and with these additional modules we will be changing the configuration and adding new modules.

  1. Camera 3 will be configured to screen capture mode and has our Skype caller displayed full screen.  They are displayed on my 3rd desktop screen which points towards David so he can see our guest directly.
  2. Camera 4 will be pointed at my 2nd desktop screen also in screen capture mode.  This 2nd screen will be used for browsing webpages and such LIVE.
  3. Player 1 will have our opening credits video which was post-produced a few weeks ago.
  4. Player 2 will be used for our closing credits.  Likely these are produced for each episode since we don’t know who to thank for various content and our guests.
  5. Player XX, these additional players will be used for various videos used during the broadcast.  If we want to display a YouTube video, we will use a utility to download that video and have it on my hard drive and preloaded into a Player module.  The reason for this is it will put less of a strain on my internet connection which every bit of is needed for a good quality upload to uStream.
  6. Video Overlay 1 will be used to hold our customized title graphic for David.  It basically contains his name and job description for display at random times during the broadcast.
  7. Video Overlay 2 will be used for my customized title graphic.
  8. Video Overlay 3 is destined to hold the customized title graphic for our Skype guest/co-host.
  9. Video Effect 1 I will use to combine both Camera 1 and Camera 2 in a side-by-side or Picture-in-Picture format.  This module has nearly a dozen different formats which I may setup additional Video Effect modules for.
  10. Video Effect 2 is used to combine Camera 2 and Camera 3.
  11. Video Effect 3 is for Camera 1 and Camera 3.

As you can see, our limitations force us to find creative ways to produce our broadcast.  If you’d like to help us overcome these limitations, please donate to the Week In Review show.  All donations will go to improving the quality of the show and keeping us online and broadcasting.

Cost Sheet

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At this point you have all the tools to produce videos and broadcast them LIVE for less than $700 + tax.  From this point forward we will focus in on hosting services (parts 6, 7 and 10), as well as post production (part 8 and 9) and lastly publicizing your new show online using social networking tools (part 11).

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