[mythtv-users] Closed captioning support

[Ian Trider]

Bryan,

On 5/20/05, Bryan Lockwood <bryan at lockwoods.us> wrote:
> Ian,
> 
> Thanks for adding to the chart.
> 
> I am currently running the 'surprisingly stable' 0.3.4u (unstable) IVTV
> release with a PVR250. IvTv seems to be translating NTSC CC data perfectly!
> I ascertain this by running /usr/src/ivtv-0.3.4u/utils/vbi in an SSH session
> to the backend. I get good text in the SSH session. BUT while that utility
> is running, mythfrontend will not show live TV. And no matter which setup
> options I've tried there seems no way to get Myth to show the CC data.
> 
> So, IvTv support of CC seems to be evolving. I just don't seem to be able to
> get Myth to make use of it!

Thanks for letting me know about this.  I'll have to upgrade IVTV asap
to take advantage of this.

WRT to MythTV, as I said it can't deal with the data from the PVR-x50
cards directly.  If you get yourself a PVR-350 card for output, then
(if you set the right flags with ivtvctl) you can have CC encoded into
the MPEG datastream and then decoded on output by the PVR-350 (which
is passed to the TV).

While PVR-350 output has other issues, if you are deaf/hard of hearing
then this is probably your best bet for getting workable CC output. 
As a bonus, you can dump the MPEG files onto DVD (as long as you don't
re-encode them) and your DVD player will output closed captioning! 
(You may need to toggle the CC flag in the DVD structure with a
utility like IFOEdit in the Windows world).
-- 
Ian Trider
iantri at gmail.com