
Green Screen Talking Head VideoYou may be curious to know how a walk-on video spokesperson is produced. Have you watched the weatherman on the news before? If so, you have already seen a green screen in use. Green screen video is shot in a studio. The studio lighting is critically important during the video shoot. The screen has to be evenly lit and relatively smooth. Poor lighting will potentially cast shadows or hot spots on the green screen that will make it more difficult to remove in edit. The raw video is then taken from the camera and manipulated with sophisticated video editing software. The green screen, or Chroma Key colour, is then digitally removed from the video. The images to the right show the raw green screen video that was used on this site. As you can see, everything that is green is "keyed" out of the video. The final step in the creation of a Video Spokesperson for your website is the conversion of the high definition video to Flash Video. Once the video is converted to a flash video with the transparent layer preserved, it is place on the website. Hosting and Bandwidth Considerations Because a website video spokesperson will typically run everytime someone visits your website, bandwidth may become an issue. A typical 30 - 60 second video in flash format may be as large as 10 or 15 megabytes. Even a moderately busy website will consume a lot of bandwidth serving video. There are some measures that can be taken to minimize the bandwidth concerns. Your video doesn't have to run for every visitor - but it should. One option is to use some programming can be used to ensure that the video only plays on time for each visitor. The best option though, is to host your video on a proper multi-media server dedicated to serving video. VideoSpokes has a dedicated server, outside or our normal website hosting environment, to ensure rapid and smooth streaming of videos. Dedicating a media server away from our regular email, web and database servers, ensures that the streaming of large media files will not impact the performance of the other servers.
Applications for Walk On Video
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