How does H.264 compare with the current video formats supported in Flash Player?
Flash Player supports the Sorenson Spark video codec (based on H.263) and On2 VP6. H.263 is the predecessor of H.264 and was designed for teleconferencing applications, at 64k rates. H.264 delivers even higher quality at lower bitrates. H.264 will deliver the same or better quality when to compared to the same encoding profile in On2. Factors you should consider when choosing a format include the complexity of the content, the desired reach, ability to archive, and licensing considerations.