Desktop Videophone & Conferencing - 
Roles for Participants

Have someone give you a tour of a professional television studio. When you return, make a chart of all the people at work there and what each of their responsibilities was. Now think about the desktop computer in your classroom of office. If you wish to videoconference between your desktop computer and one more computers elsewhere on the network, you must take on all those responsibilities. These responsibilities include what to do when things are working well, and what to do when they do not. If you have a class of students, different class members can take on different roles, which not only makes the process easier, but keeps more students actively involved in the process of learning and collaborating with each other.

 Here are some basic titles and roles (job descriptions) for you or a team:

  1. Producer: Makes the call as which communication forms will be used, audio or video, text chat window or whiteboard or some combination of these features and determines whether one Videoconference computer at each site is sufficient or whether more than that would be necessary. For example, one system might be dedicated to the whiteboard at the full size of the screen and another station used to display the video screens. Establishes who will be the audience (participants) and has a variety of forms of contact information on them, including the Internet Protocol number of the computer that they will be using. Encourages participants to broadcast from a location with a telephone so that there is a backup channel of communication of the broadcast through the computer network is not operating properly to their site.
  2. Personality: the on camera person working the script
  3. Script Writer (lesson plan developer): prepares an outline ahead of time as to what will be covered, what the content will be, with suggested forms of interaction. This often requires prior to broadcast discussions with other participants to have agreement on the focus of a broadcast.
  4. Shooter (videographer): controls the camera, knows how to zoom, pan, change camera position, focus, adjust for different light levels.
  5. Video engineer: prior to broadcast, tests video, makes necessary changes. (Lab needs 7500 so that can run tests and determine how well it is working.) Discuss video feedback with video engineers at other sites as to quality of reception. Monitors the video display during the broadcast when technical difficulties are past for shot selection, and shot variety. That is, communicates with the videographer to keep the screen visually interesting. The video engineer also switches the various video sources. That is, if you want to send what is on a videotape, a camera using the video in port would have to be removed and the lead from the videotape machine connected. The under the File menu, the Begin Broadcast command would be used.
  6. Audio engineer: prior to broadcast, tests audio, makes necessary changes. Discuss quality of reception with audio engineers at other sites. In general, you should use MACE 3:1 compression setting. If your network seems paraticcularly slow, try switching to MACE 6:1. Use the Sound Settings command in the Settings menu to select a sound compression type.
  7. Shared window or white board engineer: This person sets up graphics, images, text, that needs placement. Controls the mouse to point to parts of the whiteboard screen at the pace and direction of the script.
  8. Keyboard assistant: This person has adequate typing skills and types the necessary text at the request and pace of the Personality as working the script proceeds.
  9. Recording assistant: turns the taping or recording feature on and off and tracks the available hard drive storage space.
  10. Software engineer: prior to broadcast runs checkoff. Among other tasks, finds and launches the program, makes sure that virtual memory is turned off as leaving it on greatly slows down and reduces the quality of the experience. This engineer may need to quit the conferencing software and change the RAM settings to a higher value as the number of participants increase. Determines how many other software programs are needed and in what sequence and decides how many if any can run on the same computer that is run the videoconference or whether a second computer is needed and what software applications will run on which computer given the available RAM and the CPU requirements. That is, some applications will require much of the CPU and cannot therefore run on the same computer as the videoconference software without degrading the videoconference audio and video. During the broadcast, if technical problems are resolved, this engineer also manages the file sharing process. On the Conferencing computer, there can be a shared folder as a part of the Media Conference program, but other programs can run alongside on the second computer, using applications like Fetch, email with attachments, FTP, Netscape email with attachments and so forth. An email program should always be running and even connected if bandwidth will allow for backchannel communication when difficulties occur with conferencing system.

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[Pageauthor: Houghton]