Podcasting involves three activities: capturing content, producing it, and distributing it. Tim Poe and Ben Rogers from the Office of Information Technology at Duke University's Multimedia group talk about the technology initiatives undertaken, and make their audience aware of the plethora of tools available to perform these activities easily.
The first and most common mistake made when producing for streaming is shooting in an interlaced mode. All streaming video is progressive. And if you shoot interlaced, you start with two fields that may not combine into one clean frame (even if you check the deinterlace box before rendering), especially when motion or sharp diagonal lines are involved. This can result in simple jaggies or bizarre artifacts, such as a table edge that looks like twisted wrought iron in a video produced by one of the largest retail chains in the world. Second, if you do shoot interlaced, remember to deinterlace the video. Streaming producers make this mistake all the time and end up with horizontal slices, almost like Venetian blinds in higher-motion sequences.
Interactive media for distance training require special presentational strategies. Compressed video, an interactive medium using fiber optics, has unique characteristics which users must know. The video creates a lack of direct eye contact and a sense of separation. The compression creates flattened images and extremes of colors. Effective presenters in this medium must plan concise, horizontal graphics. They must schedule short, varied activities with limited use of uninterrupted lecture. And they must plan frequent interactive activities--such as questions, group work, and demonstrations--for an effective session.
Microsoft's Silverlight technology, launched at the NAB conference two weeks ago and pitched hard to developers at the Mix '07 conference this week, is being taken as a competitor to Adobe's Flash. Since it is a framework for providing rich applications to the Internet browser, it is indeed that. But though Silverlight and Flash are competing technologies, Microsoft's offering is different from Adobe's in key ways.