A podcast is a collection of digital media files which is distributed over the Internet, often using syndication feeds, for playback on portable media players and personal computers. The term podcast, like "broadcast", can refer either to the series of content itself or to the method by which it is syndicated; the latter is also termed podcasting. The host or author of a podcast is often called a podcaster.
The term is a portmanteau of the words "iPod" and "broadcast",the AppleiPodbeing the brand of portable media player for which the first podcasting scripts were developed (see history of podcasting). These scripts allowed podcasts to be automatically transferred to a mobile device after they are downloaded. from Wikipedia
There is a vedio below which introduce the podcast:
From the explain, we could know the podcast clearly.
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