[mythtv] Sorry to trouble you... with a 'q' about DVB subtitles n' mysql

Martin Barnasconi mythtv at barnasconi.net
Mon Feb 28 21:31:13 UTC 2005


On Monday 28 February 2005 07:43, Sami Röppänen wrote:
> I noticed that Juha Kuikka made a dvb subtitle patch for mythtv 0.16
> some two months ago and it seemed very promising. Now that I browsed
> thru the mailing list, I didnt see any remarks for it. That makes me
> sad, as I think the rest of the DVB code is excellent. Living in a
> country where all the films are foreign and quite a few channels use the
> dvb subtitle format makes things less smooth for me.
>
> Sorry to trouble you all, but is any1 anymore working with this subject?

Subtitling/Teletext/CC support is not very well integrated into Mythtv. For 
analog cards, some vbi-stuff is added in the nuppelvideoplayer/recorder code, 
but only suitable for non-PVR cards.
For "digital" sources (PVRxxx or DVB) nothing is avaiable yet.

Based on some experimental patches posted some months ago, I started to 
implement the vbi stuff for PVR/IVTV cards (ready soon). As the patches were 
originally based on DVB PID vbi detection, I think I can restore some of this 
(I threw out the DVB decoding in the first place ;-) 

I think we should aim for a single vbidecoder class which should handle 
the /dev/vbi (non-PVR), embedded vbi (PVR) or vbi PID (DVB) streams, 
depending on the card selected. An additional OSD overlay is available for 
the subtiltes/teletext/CC presentations.

I expect to post some of my findings the comings weeks.

Martin


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