Re: 608 samples

VLC has a 608 decoder, that should support all 608, including roll-up
captions (a contrario from Xine) and tested with actual NTSC streams.
http://git.videolan.org/?p=vlc.git;a=blob;f=modules/codec/cc.c;hb=HEAD

On 01 Apr, Christian Vogler wrote :
> There are also at least two open-source projects that have CEA-608 caption
> decoders - Xine (for the subset that is used on DVDs in the libspucc/
> source folder) and CCExtractor. Xine doesn't support roll-up captions,
> since they never appear on DVDs, but it handles pretty much everything
> else, including a file that Giovanni Galvez threw at me for testing a
> couple years ago.
> 
> Christian
> 
> 
> 
> 
> 
> 
> On Mon, Mar 31, 2014 at 2:39 PM, Philip Jägenstedt <philipj@opera.com>wrote:
> 
> > Thank you Ken!
> >
> > I remember now that SCC was one of the standalone 608 formats you
> > mentioned at FOMS. The raw essence is exactly what I'm interested in,
> > so that sounds very promising.
> >
> > I've asked to order a copy of "The Closed Captioning Handbook" for my
> > office, it looks very relevant to what I do.
> >
> > Philip
> >
> > On Tue, Apr 1, 2014 at 1:10 AM, Ken Harrenstien <klh@google.com> wrote:
> > > Giovanni Galvez is still there and still super helpful.
> > > Their software is widely used in the industry for format
> > > conversion.
> > >
> > > We host one of their demo videos at
> > > http://www.youtube.com/watch?v=BbqPe-IceP4
> > >
> > > and I'm sure Giovanni can send you the corresponding SCC
> > > files for that or any other demo video they have.  The reason
> > > I suggest SCC is that this format contains the raw 608 essence
> > > that we care about; in fact, this is YouTube's preferred upload
> > > format for movie/TV content.  If you want to know how to extract those
> > > bytes from a video file, then you have a much harder task given
> > > the multitude of video containers and formats.
> > >
> > > And yes, the CFR link, while terse, does contain pretty much all
> > > of the important bits.  The CEA documents are mostly about
> > > XDS data, which has nothing to do with captions.  For
> > > purposes of WebVTT conversion a much better place to start
> > > learning about 608 is the "Closed Captioning Handbook" by Gary Robson,
> > > which should still be available on Amazon.  I like it because it's
> > > very readable and has so much other interesting context.
> > >
> > > On the other hand, if you plan to implement some kind of
> > > cable set-top box, then yes, you'll need the CEA documents
> > > plus several other specs.
> > >
> > > --Ken
> > >
> > >
> > > On Mon, Mar 31, 2014 at 8:58 AM, Philip Jägenstedt <philipj@opera.com>
> > > wrote:
> > >>
> > >> Do you mean http://www.cpcweb.com/webcasts/webcast_samples.htm ?
> > >>
> > >> What I'm looking for is the actual video file that contains the 608
> > >> data, preferably with some clue about how to extract it as well :)
> > >>
> > >> Philip
> > >>
> > >> On Mon, Mar 31, 2014 at 10:16 PM, Christian Vogler
> > >> <christian.vogler@gallaudet.edu> wrote:
> > >> > Gio Galvez at CPC did a video like that. His company was bought out,
> > but
> > >> > it
> > >> > might still be possible to get access. Should I ask?
> > >> >
> > >> > Sent from my mobile phone.  Please excuse any touchscreen-induced
> > >> > weirdness.
> > >> >
> > >> > On Mar 31, 2014 9:53 AM, "Philip Jägenstedt" <philipj@opera.com>
> > wrote:
> > >> >>
> > >> >> Hi all,
> > >> >>
> > >> >> Does anyone have access to 608 caption data and recommendations for
> > >> >> software that is known to render it correctly? I'd like to understand
> > >> >> the 608 model at the lowest level, but it's hard without examples.
> > I'm
> > >> >> guessing that people who have worked on 608 to WebVTT already have
> > >> >> sample files and scripts to process them, so anything like that would
> > >> >> be appreciated.
> > >> >>
> > >> >> Also, the spec is incredibly brief, is there really nothing better
> > than
> > >> >> this?
> > >> >> http://edocket.access.gpo.gov/cfr_2007/octqtr/pdf/47cfr15.119.pdf
> > >> >>
> > >> >> Philip
> > >> >>
> > >> >
> > >>
> > >
> >
> 
> 
> 
> -- 
> Christian Vogler, PhD
> Director, Technology Access Program
> Department of Communication Studies
> SLCC 1116
> Gallaudet University
> http://tap.gallaudet.edu/
> VP: 202-250-2795

-- 
With my kindest regards,

-- 
Jean-Baptiste Kempf
http://www.jbkempf.com/ - +33 672 704 734
Sent from my Electronic Device

Received on Tuesday, 8 April 2014 10:27:32 UTC