[mythtv-users] VBI subtitles with ivtv cards?

Jesse Guardiani jesse at wingnet.net
Fri Sep 23 14:19:50 UTC 2005


Joseph A. Caputo wrote:
> On Thursday 22 September 2005 16:37, Isaac Richards wrote:
>   
>> On Thursday 22 September 2005 04:29 pm, Joseph A. Caputo wrote:
>>     
>>> Hi,
>>>
>>> Please 'scuse my ignorance, but while going through the commit 
>>> history 
>>> for the week that I was on vacation in August, I saw some changes in
>>> SVN related to VBI & subtitles w/ivtv-driven cards.  Does this mean
>>> that subtitles are now working/supported for these cards (assuming I
>>> have a recent enough version of ivtv)?  If so, is there anything
>>> special I need to do besides enable it in the backend setup? (Note: 
>>> I'm 
>>> using regular TV-out, not a PVR-350).
>>>       
>> Only change was the ioctls enabling them are right now.  Someone still 
>> needs  
>> to write a ivtv-format vbi parser.
>>     
>
> So does that mean that they'll get embedded in the MPEG file, but Myth 
> just can't parse them out yet?


Yes. You can view them on your TV if you enable ivtv VBI passthrough 
using the ivtvctl command.


>   And if so, then:
>
> - Are they muxed into the MPEG in a standard way (i.e., could I view 
> them with another program (mplayer, xine, etc)? )
>   


AFAIK. In fact, projectx doesn't seem to have any problem demuxing the 
mpegs either.
I've burned several VBI laden mpegs to DVD using mythburn without any 
problems.

> - I assume they'd be lost if Myth transcoded the file (say, to 
> Nuppel/MPEG-4)
>   


Probably.

-- 
Jesse Guardiani
Programmer/Sys Admin
jesse at wingnet.net



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