Hi Devin,
Great, thanks.
I realize captions is an application-layer function, and intend to work
with the CCExtractor team. Do any other applications already have ISDB
caption support?
For DVB and ATSC there's quite a bit of code written by several people
for teletext and captions -- has anything at all been done for ISDB
captions?
It's used in nearly all of Central and South America, plus the
Philippines and of course Japan -- you would have thought someone has
started on the task?
We're looking for a good solution for capturing television in Brazil,
when the signal is encrypted -- are there set-top boxes or tv capture
cards that handle the decryption so that the decoded signal is passed on
with the ISDB-Tb caption stream intact?
Our test system generates captions as an overlay and does not pass on
the closed captions.
Cheers,
David
On 11/28/14, 6:40 PM, Devin Heitmueller wrote:
Hi David,
ISDB-T subtitles are done in a similar manner to DVB-T subtitles -
there is a PID in the stream which contains the subtitle data, which
needs to be decoded by the application (just as you would handle DVB-T
subtitles or ATSC closed captions). It's entirely an application
level function, having nothing to do with the driver layer.
In short, this has nothing to do with DVBv5, as that is all about how
the tuner is controlled, not what gets done with the resulting MPEG
stream. You would need to talk to whoever is responsible for the
application you are working with (whether that be VLC, mplayer,
ccextractor, etc).
Cheers,
Devin
On Fri, Nov 28, 2014 at 2:55 PM, David Liontooth <lionteeth@xxxxxxxxxx> wrote:
What is the status of ISDB-Tb / ISDB-T International / ISDB Japanese closed
captioning support?
If anyone is working on this, please get in touch -- we're particularly
interested in getting Brazilian SBTVD working.
I see Mauro has been working on DVBv5 support, but does this include
captioning?
Cheers,
David
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