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Re: Transcription/captioning


From: John E Brandt
Date: Apr 13, 2011 7:42PM

Jared, I'm glad you amended my comment about the searchability of caption
files, as that was what I suspected. But I have been told by more than one
person about the capacity to search caption files, so I assumed those folks
knew what they were talking about. This was one of my sources:

"Searching and indexing: Fully captioned web media can easily be made
searchable via
simple text queries. All students benefit by the ability to quickly review
key areas of
interest. Moreover, searchable web media greatly extend the shelf-life of
the lecture
content, allowing students quick and ready access to lecture material
throughout the term."

Maybe I over-interpreted this and bought into a sales-pitch too much.

John E. Brandt
Augusta, Maine, USA

-----Original Message-----
[mailto: <EMAIL REMOVED> ] On Behalf Of Jared Smith
Sent: Wednesday, April 13, 2011 3:57 PM
To: WebAIM Discussion List
Subject: Re: [WebAIM] Transcription/captioning

On Wed, Apr 13, 2011 at 1:19 PM, John E Brandt < <EMAIL REMOVED> > wrote:
> Yes, we want closed captions rather than open captions.

This is a bit unclear. In general, "closed" captions can be turned on/off,
whereas "open" captions cannot. I think what John is recommending is that
you avoid captions that are part of the video stream itself (i.e., there is
no external caption data).

Even with closed captioning (or open captioning for which there is external
caption data), it isn't really accurate to say that they are searchable.
They could be made searchable if you built a custom system to do so. No
major search engine indexes and provides search capabilities for caption
data, with the exception of YouTube, which does so for captioned videos that
are within YouTube.

Perhaps with HTML5 <video>, if they ever decide an a standard <track>
captioning format, we might someday see search engines provide search
capabilities for captions.

Jared Smith