The term podcast was initially used to reference an RSS feed that contained audio files in the item's enclosure field. The meaning of podcasting has since expanded, and now refers to RSS feeds that contain all types of media, including audio and video, in the items enclosure field. For the non-technical folks, podcasting is simply a means of syndicating and distributing rich-media files via the Internet. The content contained in a podcast can vary significantly, from a song, to a educational lecture, to a political debate, to just about anything else. One great thing about podcasting is the wide variety of content formats it can contain. And unlike radio or television broadcasts, the recipient can listen or view at their leisure, choosing for themselves when and where they wish to listen or view a podcast.
What is Podcasting Video Tutorial