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Television Media The Internet Your Rights Online

Closed Captioning In Web Video? 164

mforbes writes "Like many geeks, I enjoy watching TV, movies, and streamed video. However, in company with 2%-3% of the population, I suffer from a problem known as Central Auditory Processing Disorder, which essentially means that I have difficulty separating the sounds of human voices from various background noises. When watching TV and when watching movies at home, this isn't a problem, as I can simply turn on the closed captioning. (I find radio to be simply an annoyance.) How much effort would it take the major purveyors of Internet video (the broadcasting majors, etc.) to include an option for CCTV? I doubt the bandwidth required would be more than 1% of that required for the video already being presented. As a social libertarian, I would never ask for government regulation of such an enterprise; I ask only that the major studios be aware of the difficulties that those of us with auditory disorders face. If it's rough for me, how much more difficult can it be for someone who can't hear at all?"
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Closed Captioning In Web Video?

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  • by Anonymous Coward on Sunday June 17, 2007 @03:38PM (#19543181)
    AOL video provides CC on some videos. It really is up to the studio to provide the CC (which there is a defined spec) to their online counter parts. After that its just a matter of the player supporting it - which the AOL video player does.
  • dotSUB (Score:5, Informative)

    by Raindance ( 680694 ) * <johnsonmxNO@SPAMgmail.com> on Sunday June 17, 2007 @03:40PM (#19543217) Homepage Journal
    You may want to check out dotSUB.com -- a site dedicated to collaborative subtitling of videos. Not a panacea, but it's something.

    http://dotsub.com/ [dotsub.com]
  • by dotpavan ( 829804 ) on Sunday June 17, 2007 @03:49PM (#19543297) Homepage
    it is left to the uploader to give the subtitles, as per their FAQ here [google.com], so they do support .SUB
  • OpenCaptions.com (Score:5, Informative)

    by everyplace ( 527571 ) on Sunday June 17, 2007 @04:15PM (#19543515) Homepage
    A friend has been working on Open Captions [slashdot.org] for quite a while, that seems to address a lot of these issues. From what I understand, its aim is to pick up where video distribution companies and content authors have left off.

    When you think about sites like youtube, you can't hope to have users caption their videos before uploading, but you still want this content available in an accessible way. OpenCaptions takes any online video source, and allows user-captioning, that can be layed over video in a number of ways. It still requires a captioner, like any other captions, but allows the tasks to be distributed to anyone who wants to lend a hand at captioning a video.

    From the about [opencaptions.com] page:

    Open Captions allows anyone to add captions and subtitles to Internet video - caption your own work, or a favorite video from another website. Captioning allows for everyone to share the same media experience on the Internet regardless of hearing abilities and language barriers. Open Captions wants to encourage more people to caption videos for each other, this site will help provide the tools and forum for online captions. The phrase 'Open Captions' is referring to a community of people transcribing and translating Internet videos for the world to watch. The term 'open captions' is also used technically to describe captions that are always available on some videos.
  • Re:Laws (Score:5, Informative)

    by Anonymous Coward on Sunday June 17, 2007 @04:22PM (#19543573)
    Your statement that the captionign is "cheap and easy" is not at all correct. As someone who works in education where captions are often required to be added to material that wasn't previously captioned, I can tell you that it is a major PITA to get this done. First you have to send the video to a transcriber, who generally charges about $15/hour (their hours, not running time hours). If the material is highly technical or specialized, than somebody who is a subject matter expert needs to proofread the transcript for accuracy and spelling of terminology, etc. There exists NO MAGIC BULLET for this work. The best computer voice-to-text program (Dragon Naturally Speaking) is only 95% accurate when recognizing text from a voice to which it is trained with no background noise or music - so you can't just feed a video to it, which would result in complete gibberish.

    Next the transcript needs to be broken up into phrases and sentences for the screen using natural cadence (can't be done by computer automatically) and then the resulting captions need to be synchronized to the video - basically creating time stamps for each caption bit which are then turned into a caption track able to be read by a computer media player like Real, Quicktime or Flash.

    This is very labor intensive work. It's basically costing around $100/hour of video to do right now, and that's prohibitive in the public education system where resources are scarce - and there's the question of whose responsiblity it is to pay for it and have it done, not to mention intellectual property issues wherein a caption or transcript is being publicly released for a video obtained from a copyright owner - legally the transcript belongs to the owner!

    So don't tell me this is cheap or easy unless you're willing to come do it at my college, cheapy and easily.
  • Re:Laws (Score:3, Informative)

    by TheRaven64 ( 641858 ) on Sunday June 17, 2007 @04:32PM (#19543637) Journal
    Video codecs don't, because it's not part of the video. Most container formats allow a subtitle track, and there are also some formats for including a subtitles in separate files. Subtitles are basically text with a small amount of markup (often none, sometimes colours for different speakers) in a stream with timestamps. It's up to the player to display them at the correct time. VLC manages it, I've not tried others.
  • by seaotter02 ( 979726 ) on Sunday June 17, 2007 @06:02PM (#19544463)
    Revver [revver.com] has a link under their videos going to Project ReadOn, which is a user-requested captioning system. Users first request captioning for a video and Project ReadOn assigns the video to their staff to caption it. It's what Barack Obama uses on his site [barackobama.com].

    They announced it on their blog [revver.com] a few weeks back.

    The Ask A Ninja videos tend to be captioned, here's an example one with captioning already done [revver.com], just click the closed captioning link under the video.
  • Re:dotSUB (Score:3, Informative)

    by squarefish ( 561836 ) * on Sunday June 17, 2007 @06:43PM (#19544783)
    yes, exactly what I would recommend starting with.
    here's [dotsub.com] a rocketboom on dotsub about dotsub and how it works.
  • by Anonymous Coward on Sunday June 17, 2007 @09:20PM (#19545677)
    Errors occur because people are human. Synchronization errors happen when television is being captioned live - just like translators are a little behind during UN session.

    When sentences trail off into garbage characters, it's not because the captioning is bad but because the video signal from which the captions are being decoded (line 21 of the NTSC broadcast specification) isn't good enough to decode the captions clearly. The failure could occur because the satellite signal isn't good enough, or even if the caption feed has interference before it is injected into the cable broadcasting system, which would explain why you might see a clear picture but garbled captions sometime.

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