Animation Tip: Codecs

Rather often, I get letters asking me to help troubleshoot animation problems - whether it's an ActionScripting problem, an issue with a movie clip, or figuring out how to properly in-between a certain motion sequence. Surprisingly enough, though, the questions I get the most are related to publishing for the web - and problems with my readers' users being unable to see their content. Nine times out of ten, the problem is with the codecs that readers used to publish their animations to the web.