Web presentation of Open Office slides

Motivation

TODO: Describe why viewing talks directly in the browser is desirable

Technology Requirements

• R1: Viewing talks with slides directly on the web
• R2: Not requiring visitors to have Open Office installed
• R3: Not requiring people to download the presentation
• R4: barrier-free, (e. g. text view of slide-images, display transcript of audio)
• R5: Support for all common browsers, including older browsers that are still in common use
• R6: Support audio
• R7: Audio is optional
• R8: Support for small display screens (e. g. tablets, mobile phones)
• R9: Should work without flash plugin and without JavaScript but may use these technologies if available

What is wrong with the standard html export in Open Office Impress ?

• ok R1
• ok R2
• ok R3
• fail R4: Requires Frame-Support in Browser. There is a html view that would work without frames, but it's not reachable from the start page.
• unknown R5
• fail R6: For audio an embed-tag is created which only works if the files are saved to disk but not in the world wide web
• ok R7
• fail R8: bulky frameset, slide images is not resized but gets scroll bars
• fail R9: requires JavaScript for navigation

• 
  "Your browser does not support frames."
• 
  On a small screen, the slide image is not zoomed out, but scroll bars appear
• 
  JavaScript is used for navigation without alternative

Approach

• Use OpenOffice HTML-Export as base
  • with frames
  • with notes (if there are notes)
  • browser colors
  • black arrow icons without borders

• Converting ogg-files to mp3 for Microsoft Internet Explorer
  • http://code.google.com/p/ogg2mp3/
  • ogginfo returns 1 on my recorded files which causes ogg2mpd to abort.

<source lang="diff"> --- /usr/bin/ogg2mp3 2010-09-28 21:07:25.000000000 +0200 +++ ogg2mp3 2011-09-27 22:17:55.474323127 +0200 @@ -147,7 +147,7 @@

   # read ogginfo output
   OGGINFO=$( LANG=C ogginfo "$1" )

- test "$?" != "0" && fail "ogginfo failed!" "$OGGINFO" + #test "$?" != "0" && fail "ogginfo failed!" "$OGGINFO"

   # determine nominal bitrate of source file
   BITRATE=$( echo "$OGGINFO" | grep "Nominal bitrate:" | cut -d' ' -f3 )

</source>