[mythtv] [mythtv-commits] mythtv/master commit: f5a2dc9d1 by Daniel Thor Kristjansson (daniel-kristjansson)

[Karl Dietz]

On 19.11.2011 00:45, Daniel Kristjansson wrote:
> On Sat, 2011-11-19 at 00:23 +0100, Karl Dietz wrote:
>>>      Changeset:  https://github.com/MythTV/mythtv/commit/f5a2dc9d1
>> over here we have subtitles on teletext pages on DVB but the
>> descriptor for "subtitles in german language are on page 777" was
>> missing from the PMT when I last verified it. (some broadcaster have
>> real DVB subtitles, too. But not on DVB-T)
>> So if I want to enable subtitles I always have to manually jump to the
>> right page depending on the channel.
>>
>> Do you have plans to add a way to fixup the PMT similar to the EIT
>> fixups?
>
> Looking at AVFormatDecoder::ScanTeletextCaptions() it looks like we
> look for the teletext descriptors on all streams in the PMT except
> private data streams. We do not look in the global PMT descriptors.

The "not looking at private data streams" might be a hint.

> Are these found in any locations we aren't looking? If so, I could
> add the code to look there and possibly move them to the PMT.

Find attached the output of dvbsnoop on a recording from one of the
channels with subtitles in DVB and teletext.

The DVB subtitles can nicely be cycled through but the teletext
subtitles are only available via the normal teletext browsing.

I have marked the missing (from the broadcast) part that I think could
use a fixup with ###

Regards,
Karl
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