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Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
Podcasting & SMIL
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Podcasting & SMIL

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Given at ALT-C 2006 with Brian Kelly and Scott Wilson

Given at ALT-C 2006 with Brian Kelly and Scott Wilson

Published in: Technology
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  • Transcript

    • 1. Podcasting & SMIL
      • ALT-C 2006
      • Adrian Stevenson
      • Internet Services
      • University of Manchester
            • Some slides in this presentation are based on original presentations produced by the JISC-funded QA Focus project provided by UKOLN and AHDS
    • 2. RSS
      • What is RSS?
        • “ RSS is a format for syndicating news and the content of news-like sites, including major news sites like Wired, news-oriented community sites like Slashdot, and personal weblogs” – from xml.com
      • What does RSS stand for?
        • Several different views:
          • Netscape called it Rich Site Summary (v 0.92)
          • W3C felt it should be based on RDF/XML to provide extensibility and called it RDF Site Summary (v 1.0)
          • Dave Winer (& others) valued its simplicity and developed an alternative called Really Simple Syndication (v 2.0)
    • 3. RSS Viewers
      • Ways of accessing RSS feeds:
        • Blog – eg. bloglines
        • Web pages
        • Bookmark interfaces –Mozilla Firefox ‘live’ bookmarks
        • Browser plug-ins - Sage
        • Email clients - Outlook Express, Mozilla Thunderbird
        • Mobile Phone
    • 4. Podcasting - What is it?
      • RSS and Podcasting:
        • Podcasting is an application of RSS 2.0:
          • It is simply the syndication of audio, typically mp3 files, instead of text (RSS news feeds)
          • You can schedule the download of the mp3 files and listen to them offline e.g. on a portable mp3 player such as an Apple iPod
        • Very easy for the end user and relatively easy for the publisher
        • Can be difficult to do well –it helps to have some sound recording skills
      • Many Podcast directories http://www.podcastalley.com/ , BBC
    • 5. Accessing a Podcast
      • To access a Podcast:
      • Install Podcast software e.g. iTunes, Juice, Jager, Blogmatrix, …
      • Add the URL of RSS file to the podcast software
        • IWMW 2006
        • BBC Film reviews
      • Various configuration options are usually available
        • Scheduling for downloads
        • The download location of mp3 file
      • Transfer files to portable mp3 player such as an iPod (using e.g. iTunes, Winamp)
    • 6. Podcasting and [e-]Learning
      • The University of Bath provides a highly-regarded e-learning Blog, Auricle
        • http://www.bath.ac.uk/dacs/cdntl/pMachine/morriblog.php
      • Auricle has now added some Podcasts:
        • Skype interviews
      • Stanford ITunes very successful
      • However, Podcasting still fairly new to HE sector
    • 7. Creating a Podcast
      • Make the recording:
        • Eg. Using audio recording software e.g. Audacity
        • Best to use good quality microphone and a PC
        • Recording usually delivered as mp3 file
      • Upload the recording to a web server and create an RSS file for the recording
      • Possible problems
        • Speaker moves about
        • High level of background noise
        • Interference
    • 8. Audio Processing
      • Editing – pauses, coughs
      • Equalisation
      • Amplification - normalisation
      • Pitch change
      • Volume Compression
      • Filtering
        • Noise reduction (Steinberg Cleanup)
      • File Compression (typically to mp3)
    • 9. Creating a Podcast (2)
      • Early adopters approach – copy & edit an existing RSS file
      <item> <title>Podcast 1 For IWMW 2006</title> <link>http://www.ukoln.ac.uk/…podcasts/podcast-iwmw-2006-01.mp3</link> <guid>http://www.ukoln.ac.uk/…/ podcasts/#podcast-01</guid> <description>This introductory Podcast describes what a Podcast is and …. ( 2.5 minute long MP3 recording, ~1.6 MB).</description> <enclosure url=&quot;http://www.ukoln.ac.uk/ …/podcasts/podcast-iwmw-2005-01.mp3&quot; length=&quot;1575770&quot; type=&quot;audio/mpeg&quot;/> <pubDate>Sun, 12 Jun 2006 ...</pubDate> </item> <channel> <title>IWMW 2006 Podcasts</title> <link>http://www.ukoln.ac.uk/web-focus/events/podcasts/podcasts.xml </link> <description>Podcasts About IWMW 2006</description> <language>en-gb</language> <copyright>Creative Commons - Attribution and Share-alike</copyright> <pubDate>Wed, 15 Jun 2006 10:00:00 GMT</pubDate>
    • 10.  
    • 11.  
    • 12. Creating a Podcast (3)
      • Some software now available
    • 13. Podcasting Usage Scenarios
      • Podcasting is not a replacement for the ‘real thing’ – the live lecture theatre experience
      • But it means you can …
        • access lectures, conference presentations etc. after the event – Stanford ITunes. Some examples now in the UK.
        • Provide some support in case of problems (e.g. couldn't attend talk), conflicts (parallel sessions), …
        • Provide a 'taster', helps in marketing, addresses additional areas (e.g. social activities), …
        • Keep informed of developments elsewhere
    • 14. SMIL
      • W3C Specification
        • ‘ Synchronized Multimedia Integration Language’
      • SMIL presentations can integrate audio and video with images, text or other media type
      • Syntax and structure similar to HTML
        • SMIL 2.1 released Dec 05
        • SMIL 1.0 released 1998
      • Examples
        • Customers, Suppliers and the Need for Partnerships – Stephen Emmott
        • State of the Web 2005 – Molly Holzschlag
    • 15. Creating a SMIL presentation
      • Record and process audio
      • Create the image files
        • Assuming based on a Powerpoint presentation
      • Write SMIL code
      • Make SMIL code accessible
      • Add other optional features
    • 16. Process Powerpoint slides
      • Export from Powerpoint
        • ‘ Save as’ PNG – every slide
        • Can look a bit messy:
        • http://www.ukoln.ac.uk/web-focus/events/workshops/trieste-2005/talk-2a/
      • Process image files in graphics program such as Macromedia Fireworks
    • 17. SMIL code
      • <smil xmlns=&quot;http://www.w3.org/2001/SMIL20/Language&quot; xml:lang=&quot;en&quot;>
      • <head>
      • <layout>
      • <root-layout height=&quot;450&quot; width=&quot;750&quot; background-color=&quot;white&quot;/>
      • <region id=&quot;main&quot; title=&quot;Main&quot; width=&quot;600&quot; height=&quot;450&quot; fit=&quot;fill&quot;/>
      • <region id=&quot;nav&quot; title=&quot;Navigation&quot; width=&quot;150&quot; height=&quot;450&quot; left=&quot;600&quot;/>
      • </layout>
      • </head>
      • <body>
      • <par>
      • <audio src=&quot;emmott.mp3&quot; />
      • <img id=&quot;image_1&quot; src=&quot;Slide1.jpg&quot; region=&quot;main&quot; begin=&quot;0&quot;/>
      • <img id=&quot;image_2&quot; src=&quot;Slide2.jpg&quot; region=&quot;main&quot; begin=&quot;1:25&quot; />
      • <img id=&quot;image_3&quot; src=&quot;Slide3.jpg&quot; region=&quot;main&quot; begin=&quot;2:06&quot; />
      • <textstream src=&quot;nav.rt&quot; region=&quot;nav&quot; begin=&quot;0s&quot; />
      • </par>
      • </body>
      • </smil>
      Example Demo
    • 18. Accessibility
      • ‘ alt’ and ‘longdesc’ text attributes
      • <body>
      • <par>
      • <audio src=&quot;emmott/emmott.mp3&quot; alt=“recording of a talk by Stephen Emmott called Customers, Suppliers, and the Need for Partnerships&quot; longdesc=&quot;emmott/emmott.txt&quot;/>
      • <img id=&quot;image_1&quot; src=&quot;emmott/Slide1.jpg&quot; region=&quot;main&quot; begin=&quot;0&quot; alt=&quot;Customers, Suppliers, and the Need for Partnerships title slide&quot;/>
      • <img id=&quot;image_2&quot; src=&quot;emmott/Slide2.jpg&quot; region=&quot;main&quot; begin=&quot;1:25&quot; alt=&quot;Copyright and credits slide&quot;/>
      • … .
    • 19. Accessibility
      • Captioning
        • Makes SMIL accessible to those with difficulty or who are unable to hear
        • SMIL audio track improves accessibility for those with visual impairments
        • Requires a transcription of the spoken content (plus any important non-spoken sound), and associated a timestamp
      • Add a textstream to the SMIL code:
        • <textstream src=&quot;emmott/transcript.rt&quot; region=&quot;text&quot; begin=&quot;0s&quot;/>
      • Example
    • 20. Issues
      • Technical Issues
        • Not many SMIL editors
        • Audio recording quality
        • Users have different SMIL players (or no SMIL player)
          • Mixed media problem
        • Difficult to capture complex elements of a presentation
        • No control over a users audio and video settings
        • Large files sizes (can be solved by streaming)
      • Non-Technical Issues
        • Time consuming – Flash and Quicktime easier?
        • IPR
    • 21. SMIL Usage Scenarios
      • A SMIL presentation is not a replacement for the ‘real thing’ – the live lecture theatre experience
      • But it means you can …
        • access lectures, conference presentations etc. after the event – eg. IWMW and this ALT-C workshop today
        • Provide some support in case of problems (e.g. couldn't attend talk), conflicts (parallel sessions), …
        • Provide a 'taster', helps in marketing, addresses additional areas (e.g. social activities), …
    • 22. Some references
      • W3C SMIL Page http://www.w3.org/AudioVideo/
      • W3C Accessibility Features of SMIL http://www.w3.org/TR/SMIL-access/
      • Synchronized Multimedia On The Web - Larry Bouthillier http://www.webtechniques.com/archives/1998/09/bouthillier/
      • SMIL Scripting for Quicktime http://developer.apple.com/documentation/quicktime/Conceptual/QTScripting_SMIL/index.html
      • SMIL del.icio.us http://del.icio.us/bias/SMIL

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