Re: 608 samples

Let me know if you want a fork that adds support for paint-on captions in
Xine and also fixes a Unicode encoding bug, along with a test DVD image. I
no longer have write access to the Xine repo since they switched away from
svn, and this type of captioning is so rare that I decided not to bother
with pushing the patch back upstream.

Christian


On Tue, Apr 1, 2014 at 8:19 AM, Philip Jägenstedt <philipj@opera.com> wrote:

> Brilliant! I've actually already contacted the ccextractor maintainer and
> he's very helpful. I'll also check out the Xine code, I've used it a lot
> myself because of the good DVD support.
>
> Philip
> On Apr 1, 2014 6:52 PM, "Christian Vogler" <christian.vogler@gallaudet.edu>
> 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
>>
>


-- 
Christian Vogler, PhD
Director, Technology Access Program
Department of Communication Studies
SLCC 1116
Gallaudet University
http://tap.gallaudet.edu/
VP: 202-250-2795