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Workshop# 2a

Topic #2 - Basic Streaming
Workshop #2a - Sunday, August 6 - 9amPDT/noonEDT/4pmGTM (global times)
Workshop #2b - Thursday, August 10 - 9pm GMT+8 (global times)

Related Screencasts (best if you can watch these and try things out before the workshops)
Access information to the Webcast Academy streams will be provided during the workshops.  In the meantime, you should be able to experiment with most other aspects of streaming by following along with the screencasts.

Webcast Tech Support Team Needed!
EdTechTalk is hosting a 'Community Forum' Sunday, August 6 5pmPDT/8pmEDT/midnight GMT (global times)
It's gotten a lot of attention in the blogosphere and we expect a significant number of first time webcast participants who may be in need of tech assistance.  Anyone  who is available to provide help during the show (most probably through the text chat room) is very welcome/encouraged to join the Webcast Academy Support Team. We can discuss details of how that will function during workshop 2a.


audio cables question

On the Simplecast screencast, the audio cables were opened, but were they started? I was having an audio issue (no audio) so I started them and got a terrible screeching sound.

Also, I had some windows that were different from the screencast so I thought maybe I had an old version. I went to download and install and I'm getting an error. I uninstalled whatever version I had but am still getting the error. I wonder if there's a conflict because I have SAM installed?

Virtual Audio Challenges

Hi Susan,

  The repeater was started. That screeching noise usually happens when the 'Wave in' and 'Wave out' selections are what they need to be. I have wave in = my USB mic, wave out - my soundcard.

Ah yes, upgrading VAC can be messy if you haven't totally uninstalled the previous version before. The install section of their help file mentions:
  • Uninstall all installed versions of VAC. It's very important.

After successful installation, you will receive a confirmation dialog. If there was no errors, Windows restart is not required. VAC becomes functional immediately after an installation completes. If Windows can't safely replace a system files during installation, a reboot is required to make VAC active.

I only read that after I had encountered similar problems to yours.  I below removing all VAC files from 'program files' and rebooting allowed for a fresh install.  We should definitely add this caution and fix to The Book.

Also found this in the VAC help file - gave me a chuckle...

To record Skype conversations, you need to create relatively complex routing scheme. It requires a clear understanding of Windows audio operation basics, VAC principles and learn other examples. In most cases, it's better to look for a special Skype recording application.

The example they give of how to do it, is much different than what we've been doing

To record Skype conversations, you need two Virtual Cables and at least two Audio Repeater instances:

  • In Skype, you must assign an input to the Virtual Cable 1 In and assign an output to the Virtual Cable 2 Out.
  • First Audio Repeater instance must transfer from your audio adapter's input to the Virtual Cable 1 Out, feeding the Virtual Cable 1 with a microphone signal.
  • Second Audio Repeater instance must transfer from the Virtual Cable 2 In to your audio adapter's output, passing Skype output to the speakers.
  • Now you can separately record your voice from the Virtual Cable 1 In and other party's voice from the Virtual Cable 2 In. Almost any multitrack recorder can be used - for example, Adobe Audition (formerly Cool Edit Pro).
  • If you want to record both parties from a single source (mixed), you need to start third Audio Repeater instance and transfer from the Virtual Cable 1 In to the Virtual Cable 2 Out. Then you could record a mixed signal from the Virtual Cable 2 In.
  • Don't forget about format matching, Skype uses 48000/16/mono. All Audio Repeater instances and your recording software must be configured to use this format.

event | by Dr. Radut