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Video Captioning: How-To & Other Resources

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This slideshow is from my Accessible Technology class at CalState Long Beach. …

This slideshow is from my Accessible Technology class at CalState Long Beach.

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Transcript

  • 1. Video Captioning
    ETEC 535
    By: Keira Dooley
  • 2. What is Captioning?
    Captions are text versions of the spoken word.
    Closed captions are very limited in their formatting, because the caption look, feel, and location are determined by the caption decoder built into the television set or web player; can usually be turned on or off.
    Open captions include the same text as closed captions, but the captions are a permanent part of the picture, and cannot typically be turned off.
  • 3. Why use Captioning?
    • Media is everywhere. The use of video in education is substantial and increasing
    • 4. The value and impact extend beyond just making content accessible for the deaf. Most users are not deaf and hard of hearing, but use words to search, to reinforce language skills and to comprehend better.
  • Captioning: Web Accessibility Guidelines
    Captions should be:
    Synchronized - the text content should appear at approximately the same time that audio would be available
    Equivalent - content provided in captions should be equivalent to that of the spoken word
    Accessible- caption content should be readily accessible and available to those who need it
  • 5. Transcripts
    Transcripts provide a textual version of the video content that can be accessed by anyone.
    Transcripts do not have to be verbatim accounts of the spoken word in a video. They can contain additional descriptions, explanations, or comments that may be beneficial.
  • 6. Reasons for Writing Transcripts
    Transcripts…
    are needed to generate captions
    have value for all students
    are searchable
  • 7. Audio Descriptions
    Audio descriptions provide additional information about what is visible on the screen.
    When captioning videos, keep in mind to also describe visual information with audio descriptions.
    Listen to a sample Audio Description in MP3 Format http://www.webaim.org/techniques/captions/media/audiodesc.mp3
  • 8. Basic Captioning Process
    Produce a transcript of the audio portion of the video.
    Divide text into captions, observing guidelines about where to break sentences. (Some programs, like Camtasia, offer 3 lines of text per caption.)
    Synchronize captions to the video timeline.
    Export your video for the web or other output device.
  • 9. Captioning on YouTube
  • 10. Captioning in YouTube
    YouTube videos can be captioned, but they must be YOUR videos on YOUR YouTube account.
    How to Caption your YouTube Videos: http://help.youtube.com/support/youtube/bin/answer.py?answer=100077
  • 11. Captioning in YouTube
    Log into YouTube & locate “My Videos”
    Select the video that you would like to caption
    Select the Edit button (see next slide)
  • 12. Step 3: Advanced Editing in YouTube
  • 13. Captioning in YouTube
    Select Captions and Subtitles
    Browse for the captioning file (.sub or .srt)
    Captions can be created in Notepad or by using another captioning program, like CaptionTube or Overstream.
  • 14. Step 4: Captions & Subtitles
  • 15. CaptionTube
    With CaptionTube you can create captions for your YouTube videos. http://captiontube.appspot.com/
    Things to consider:
    Sign in with a Google Account
    You must allow this program to have access to your YouTube account.
    Use Notepad to save your captioning files when exporting captions.
  • 16. Creating Captionsin CaptionTube
  • 17. Creating Captionsin CaptionTube
  • 18. Overstream
    Easily create and synchronize your subtitles to any online video, store them on the Overstream server, and send the link to the subtitled video overstream to your friends. http://www.overstream.net
    Things to consider:
    You must create an Overstream account
    The following online videos are supported: YouTube, Google Video, MySpace Video, Dailymotion, Veoh, Blip.tv and Archive.org
  • 19. Camtasia
    Camtasia is a program by TechSmith that allows you to caption your own videos.
    Things to consider:
    It costs $ money.
    Its relatively easy.
    It offers many types of video export options.
    Underpowered computers may cause problems when displaying the video.
  • 20. MAGPie
    MAGpie is a free tool for creating caption files that can be utilized by media players. http://ncam.wgbh.org/webaccess/magpie/magpie2_download.html
    Things to consider:
    You can caption stand-alone videos. (your own videos that are not on YouTube)
    Installation is complex. (needs 4 programs)
    Captioning is complex.
  • 21. Speech Recognition Software
    Speech recognition software was designed to record the a person’s voice and convert it to text.
    Used by students in class to record lectures.
    Used by instructors to record their own lectures.
    Examples of Speech Recognition Software:
    Dragon Naturally Speaking
    IBM Embedded ViaVoice
    Windows Speech Recognition in Windows Vista
  • 22. Speech Recognition Software
    Key Issues:
    Software cost
    Training time - it is necessary for each user to train speech recognition software to recognize his or her particular style of speech.
    Word error rate
  • 23. 0% Word Error Rate
    Everyone loves a booming market, and most booms happen on the back of technological change. The world's venture capitalists, having fed on the computing boom of the 1980s, the internet boom of the 1990s and the biotech and nanotech boomlets of the early 2000s, are now looking around for the next one. They think they have found it: energy.
  • 24. 10% Word Error Rate
    Boot hoses a booming market, gloved capote booms happen heart the back of technological change. The world's venture capitalists, house fed gem's the computing boom of the 1980s, the internet boom of the 1990s and the biotech and nanotech boomlets of the early 2000s, are now looking around for the road one. They gaunt they have found bubonic: energy.
  • 25. Outsource
    A common alternative to captioning your own video is to outsource the captioning process.
    Captioning Companies
    Automatic Sync Technologies
    LNS Captioning http://www.lnscaptioning.com/
    Closed Caption Maker http://www.ccmaker.com/
    Speche (real time captioning) http://www.speche.com/
  • 26. References
    WebAIM: http://www.webaim.org/techniques/captions/
    Automatic Sync: http://teachingcommons.cdl.edu/access/docs_multi/CaptioningWebinar.shtml
    Overstream: http://www.overstream.net