[MEncoder-users] ATSC closed captioning

[Reimar Döffinger]

On Sat, Nov 27, 2010 at 12:25:46PM -0800, Scott W. Larson wrote:
> On Sat, 2010-11-27 at 20:04 +0100, Reimar Döffinger wrote:
> > -subcc now takes a number 1 - 4 to select which one you want.
> > No selecting at runtime yet, sorry.
> 
> Ok, that's enough for testing.
> 
> I think the
> 
> 	if (channel != (selected_channel() & 1)) 
> 		return; 
> 
> lines in cc_decode_EIA608() aren't right. If I set subcc to 1, the
> function does get called (the channel test in subcc_process_eia708()
> passes and calls it) but the channel tests in cc_decode_EIA608() fail so
> nothing is displayed. If I remove those tests, I get captions.

1) It works fine with the sample on mphq: sample_atsc_subs.mpeg,
   so a sample would be welcome.
2) Since channel can only be 0 or 1, -subcc 2 should at least
   show something in that case (well, there is one case in which
   it is possible nothing will be shown, but it seems unlikely).