From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from smtp0.sscnet.ucla.edu ([128.97.229.230]:58964 "EHLO smtp0.sscnet.ucla.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750866AbaK2Cwx (ORCPT ); Fri, 28 Nov 2014 21:52:53 -0500 Message-ID: <547934E1.3050609@cogweb.net> Date: Fri, 28 Nov 2014 18:52:17 -0800 From: David Liontooth MIME-Version: 1.0 To: Devin Heitmueller CC: Linux Media Mailing List Subject: Re: ISDB caption support References: <5478D31E.5000402@cogweb.net> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-media-owner@vger.kernel.org List-ID: 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 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 >> -- >> To unsubscribe from this list: send the line "unsubscribe linux-media" in >> the body of a message to majordomo@vger.kernel.org >> More majordomo info at http://vger.kernel.org/majordomo-info.html > >