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Podcasting

Podcasting. Preparing the MP3 File Creating an RSS Feed Validating and Publishing the Feed. Podcasting Defined. Podcasting is the distribution of specially encoded multimedia content (normally MP3 files with ID3 tags) to subscribed personal computers via the RSS 2.0 protocol .

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Podcasting

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  1. Podcasting Preparing the MP3 File Creating an RSS Feed Validating and Publishing the Feed

  2. Podcasting Defined • Podcasting is the distribution of specially encoded multimedia content (normally MP3 files with ID3 tags) to subscribed personal computers via the RSS 2.0 protocol. • It is a form of narrowcasting, which sends content to people who have decided to listen, as opposed to broadcasting, which goes to everyone within a certain radius of the signal.

  3. Podcasters versus Podcatchers • Podcasters are the people who create the content. • Podcatchers are those who listen to the content.

  4. Potcatching Clients • The first podcatching client was iPodder, created by Adam Curry, the former MTV VJ. • iPodder is now called Juice Receiver and is freely downloadable from juicereceiver.sourceforge.net. • Juice Receiver is a so-called aggregator that accesses the podcasts to which you have subscribed, retrieves any enclosed multimedia content, manages files for iTunes and iPhoto, and deletes old podcasts from your hard drive after they have expired.

  5. iTunes • The most popular podcasting client is iTunes, which is available for both Macintosh and Windows. • You download iTunes from www.apple.com/itunes.

  6. Recording the MP3 File • You can use any audio recording software you prefer to record the MP3 file. • Audacity is a free, cross-platform (i.e., Mac and Windows) audio editor available from audacity.sourceforge.net. • iTunes can convert a wide range of audio formats into the MP3 format.

  7. ID3 Tags • ID3 tags enable MP3 players to display information about the file, such as: • Name • Artist • Album • Track Number • Year • Composer • Genre • Comments

  8. Creating ID3 Tags with iTunes • Open the MP3 file with iTunes. • Pull down the File menu and choose Get Info. • Fill in the fields.

  9. Adding Artwork with iTunes • To associate artwork with your MP3 file, click the Artwork tab and use the controls to select your artwork.

  10. Rss Podcast Example • RSS templates for making podcasts are at www.udel.edu/fth/podcasting. • There you will find a simple example called simple.xml and a more complex example called complete.xml. • The simple example contains the minumum RSS for creating a podcast. • The complete example contains optional tags used by iTunes.

  11. Simple RSS Example <?xml version="1.0"?> <rss version="2.0"> <channel> <title>Introduction to Podcasting</title> <link>http://www.udel.edu/fth/podcasting/simple.xml</link> <description>How to create a podcast</description> <language>en-us</language> <managingEditor>fth@udel.edu (Fred Hofstetter)</managingEditor> <lastBuildDate>Fri, 03 Mar 2006 19:13:45 GMT</lastBuildDate> <item> <title>Introduction</title> <description>What is podcasting? </description> <pubDate>Fri, 03 Mar 2006 01:15:00 GMT</pubDate> <author>fth@udel.edu (Fred Hofstetter)</author> <enclosure url="http://www.udel.edu/fth/podcasting/intro.mp3" type="audio/x-mp3" length="114688"/> <guid>http://www.udel.edu/fth/2006/03/03/podcasting/intro</guid> </item> </channel> </rss>

  12. Validating a Feed • After you create an RSS file, you should validate the feed to make sure it does not contain syntactical errors that may cause the podcast to fail. • You can validate the feed for free at http://feedvalidator.org.

  13. Advertising Your Feed • If you want your feed to be listed at podcast directories and listing sites, you can go to the site’s ping form, fill out the form, and click Submit. • Some ping forms are at: • audio.weblogs.com/api.html • www.allpodcasts.com/Update.aspx • www.technorati.com/ping.html

  14. Where to Find Podcasts • The directory that started it all was iPodder, owned by and now called Podcast Alley at podcastalley.com. • You can register and create favorites at podcastpickle.com. • Yahoo’s audio search is at audio.search.yahoo.com. • A directory of directories is at podcast411.com. • iTunes U; watch the movie about iTunes U at www.apple.com/education/itunesu_mobilelearning/itunesu.html

  15. Podcasting from a Blog • If you have a blog, you can use FeedBurner to turn your blog into a podcast. This is called “burning your feed.” • FeedBurner automatically creates and hosts the podcast’s RSS feed for you. • FeedBurner is at www.feedburner.com.

  16. About Podcasting • A podcast about podcasting is atpodcast411.com • A PC tutorial is at http://www.windowsdevcenter.com/pub/a/windows/2005/04/05/create_podcasts_with_pc.html • Apple tutorials are in the sidebar at www.apple.com/itunes/podcasts/techspecs.html

  17. iTunes Podcasting Specs • The official iTunes podcasting specifications are online at: www.apple.com/itunes/podcasts/techspecs.html

  18. Fred’s Podcasting Hardware • Samson CO1U USB Studio Condenser Microphone www.samsontech.com/products/productpage.cfm?prodID=1810. • Spider for CO1U Microphone • Swing arm: Rode PSA1 Studio Arm With 2 Axis Swivel Mount, $89, ordered from www.markertek.com.

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