Closed caption services- Everything you need to know!

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Closed caption services- Everything you need to
know!
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What are closed caption services?
These are the dedicated services offering
time-synchronized text reflecting on an audio
track while watching the visual content. The
dedicated process of closed captioning covers
transcribing the audio to text and dividing it
into different chunks called caption frames.
These caption frames are then synchronized with
the video. These captions usually appear at the
bottom center of the video. Captions are created
while considering that the viewer is not capable
of hearing the audio or video at all. Hence, it
covers the transcription of spoken dialogues,
relevant sound effects, non-speech elements, and
speaker identifications.
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Difference between the closed captions and
transcripts
Firstly, the transcript is not synchronized with
the media file. It suits the requirements of
audio-only content like a podcast or other
promotional content. Transcripts lack the usage
in video or presentations. Closed captions work
best for the presentations and videos. Hence,
these are synchronized with the video for
detailed understanding.
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Difference between the live captions and open
captions
Difference between the closed captions and live
captions Live captions or real-time captions are
created and transmitted in real-time using expert
stenographers during the live events. The closed
captions, on the other hand, are attached to the
videos and are created once the event has taken
place. Difference between the closed captions
and open captions Open captions are directly
burned to the videos and cannot be turned off.
These are found on the open kiosks. The closed
captions, on the other hand, are common for
online videos. The closed captions allow the
viewers to toggle the captions on and off which
gives complete control to the viewers.
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Closed caption services- Popular formats

• The popular formats used in the closed captions
  are
• RT for real media
• CPT.XML for captioning
• STL for DVD encoding
• QT for QuickTime or QuickText
• SAMI for Microsoft or Windows Media
• WebVTT for HTML5
• SRT for YouTube and web media
• DFXP for Flash players
• EBU.STL for PAL Broadcast
• CAP for Broadcast
• SMPE-TT for web media
• SCC for broadcast, web media, and broadcast

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Final words
So, it is easy to understand closed caption
services in detail. These are different from the
basic concepts of subtitles and open captions.
Professional caption experts use the different
formats for the closed caption according to the
specific content types for the different
clients. Close captions ensure that the content
can be consumed by a wide audience without any
accessibility issues or other barriers.
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Thank you very much!
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