[vip_students] What Is A Podcast?
- From: "Support At NCBI" <support@xxxxxxx>
- To: <vip_students@xxxxxxxxxxxxx>
- Date: Wed, 26 Oct 2011 08:44:31 +0100
Hi All, I thought the below article I recently came across might be a good read for some interested in this topic. What is a podcast? A podcast is an episodic program delivered via the Internet using an XML protocol called RSS. Podcast episodes can be audio files, video files, documents, or any combination of the three. The publisher or broadcaster podcasts the program by posting the episodes and the XML document to a Web server. The consumer subscribes to the podcast using a client application, such as iTunes, which regularly reads the XML file and downloads new episodes. Because podcasts can include several of the most common types of media, they can be used to offer many different kinds of programs. Any television or radio program can of course be transmitted as a podcast, as can any lecture, performance, or other recorded event. Using the AAC file format, audio podcasts can include synchronized still images to create a narrated slideshow. In this way, a series of lectures can include the lecturer's voice and presentation slides. In most podcasts, each episode is the same file format, so subscribers can enjoy the program the same way each time. However, some podcasts use multiple media. Language courses, for example, can combine video for a sense of the foreign country, audio for information and ear training, and documents for practice and reference. A wide variety of programs are emerging as podcasts, because the protocol offers compelling characteristics for publishers: The cost of distribution is limited to the cost of data transfer. The XML document that ties the podcast together is simpler to create and maintain than most web pages. The RSS protocol helps facilitate an ongoing, opt-in, and highly convenient relationship with the subscriber. The size of the channel is effectively unlimited therefore can't be dominated by any other publisher or broadcaster. And podcasts are attractive to subscribers, too: Podcasts are free. There are thousands of podcasts available from all over the world. New podcast episodes appear automatically and can be enjoyed anywhere, anytime. How can I get started? The podcasts directory in the iTunes Store is where you find and subscribe to new podcasts: The Podcasts section of your Library is where you manage your existing subscriptions and play the episodes you have downloaded: To find and subscribe to a podcast: Launch iTunes. If you do not have iTunes, download the latest version of iTunes, free. In the left column of iTunes, click on iTunes Store underneath the Store subheading. Locate the navigation bar along the top of the iTunes Store homepage and click on Podcasts. Explore the wide selection of podcasts by clicking on the various pages and links. Alternatively, you can search for podcasts by entering search terms in the Search iTunes Store field. When iTunes displays results for your search, click Podcasts underneath the "Filter By Media Type" column on the far left to show only podcasts. When you find a podcast you want to try, you can either: Stream the podcast directly from the store by double-clicking on an episode Download a specific episode to your iTunes client by pressing the "Free" button next to an individual episode Subscribe to the entire podcast by selecting "Subscribe Free" underneath the cover art located on the left of the podcast page To listen to or watch episodes you have downloaded to your iTunes client: Navigate to Podcasts underneath the Library subheading on the left side of your iTunes client. Click the triangle next to the name of a podcast to see all the episodes. Double-click on the top episode to play it. To download and play older episodes, double-click on them or click the Get button. When a book is downloaded, the book is automatically copied into your Books library on the iTunes client. To read the book, you must use the Apple iBooks application. How much do podcasts cost? All podcasts on the iTunes Store are free. How do podcasts work? Podcasts consist of the episode files that you download, and an XML file that lists all the episodes. When you subscribe to a podcast, iTunes reads the XML file and downloads the latest episode. Each day, iTunes rereads the XML file. If a new episode is available, iTunes downloads it automatically. For more information on creating your own podcast, see the For Podcast Makers FAQ and the iTunes Podcasting Technical Specification. Are iTunes podcasts available in my country? iTunes podcasts are now available in 90 countries worldwide. The entire iTunes podcasts library is available in all 90 countries. How does iTunes support podcasts? The iTunes client application that you download and run on your Mac or PC lets you subscribe to podcasts and listen to or watch the episodes on your computer, iPod, iPhone, iPad or Apple TV. The iTunes Store, which includes a podcast directory, helps you find and subscribe to programs and helps podcasters publicize their programs. Do I need an iPod, iPhone or iPad? No. Although you can download podcasts to your iPod, iPhone or iPad to play them on the go, you can listen to or watch podcasts on your computer, using iTunes, or on your TV, with Apple TV. To read books, you must use the Apple iBooks application. Do I have to have an account for the iTunes Store to get podcasts? No. However, you do need an account to submit a podcast to the iTunes Store. A podcast I want to subscribe to isn't available in the iTunes Store. It's easy to subscribe to any podcast using iTunes, even ones that aren't available in the iTunes Store. To subscribe, find and copy the podcast's feed URL. In the "Advanced" menu, select "Subscribe to Podcast" and paste the feed URL into the dialog box. Are there video podcasts? Podcasts are more than just audio; some of the most popular podcasts in the iTunes Store are video podcasts. Most are playable on the iPod, iPhone or iPad. Additionally, Apple TV supports watching video podcasts on your TV screen. There are also text-based podcasts. iTunes podcasting supports PDF files, which can be opened on your computer (iPod, iPhone and iPad cannot display PDF files). What is an enhanced podcast? An enhanced podcast is an audio podcast that can include chapter marks, photos and hyperlinks. When you download and play an enhanced podcast in the iTunes client, a Chapters menu appears in the menu bar. Under this heading, you can find all chapter marks, artwork and start times associated with each chapter. During playback, the artwork and any associated hyperlinks for each chapter is displayed in the iTunes viewer window in the bottom left corner of the client. When an enhanced podcast is played on an iOS device, the artwork and any associated hyperlinks appear on the screen and will update with each chapter. On the iPad, you can find chapter marks for a downloaded enhanced podcast by tapping on the cover art and clicking on the far right icon in the bottom menu. Why won't some video podcasts play on my iPod, iPhone, iPad or Apple TV? Some video podcasts, while playable in iTunes, are encoded in formats that are not compatible with iPods, iPhone, iPads or Apple TV. To convert those videos so that they are compatible across different Apple platforms, highlight the downloaded video in your iTunes client, click on Advanced and select "Create iPod/iPhone/iPad/Apple TV Version". iTunes will automatically re-encode the video for playback on your selected device. Go to the Movies section of your Library to find and play the converted episodes. How can I find podcasts in my language? Podcasts are available in many different languages. The easiest way to find them is simply to search using words in the desired language. The Power Search feature in the iTunes Store includes a language pull-down filter with the most common languages used by iTunes users. Podcast Power Search is available in the "Quick Links" sidebar on the right side of the iTunes Store homepage. To see podcasts that are popular in other countries, click on the Home icon to go to the main page for the iTunes store. At the bottom of the main page is a My Store menu that allows you to switch to different stores. Once in the desired store, navigate to the Podcasts page. In the Top Podcasts list, for example, you will find podcasts popular in that country. How can I share the podcasts to which I subscribe? There are so many podcasts out there, it's tough to know which ones to subscribe to. Make it easy for your friends to find great podcasts by sending them some of your favorites. From a podcast's page in the iTunes Store, select the Tell a Friend option under the drop-down menu located next to the Subscribe Free button. This option will allow you to send a link to that podcast, along with a custom message, via email. In the same drop-down menu, you can also copy the URL or share the podcast via your Twitter and Facebook accounts. Are there parental controls for podcasts? The Parental Controls built into iTunes apply to podcasts. Limit your children's exposure to explicit content, or block the Podcasts section altogether, from the Parental Controls section of the iTunes preferences. How do I unsubscribe? If you are no longer interested in a podcast to which you are subscribed, highlight the podcast in your Library and click the Unsubscribe button in the lower left hand corner of the screen. To unsubscribe and delete all files related to the podcast, simply press the Delete key after selecting a podcast. -- I am using the free version of SPAMfighter. 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- [vip_students] Re: What Is A Podcast?
- From: Flor Lynch
- [vip_students] Re: What Is A Podcast?
Other related posts:
- » [vip_students] What Is A Podcast? - Support At NCBI
- » [vip_students] Re: What Is A Podcast? - Flor Lynch