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Posted by Jukka Aho on 10/18/06 23:29
Bill's News wrote:
> Linea Recta wrote:
>
>> It seems there is a confusing difference between the so called DVD
>> options: 'subtitles' and 'closed captioning'.
>> I now have a DVD with no subtitles, but playing it on the PC I
>> discovered it HAS a closed caption. I can make it visible too on PC
>> using PowerDVD. However, playng the DVD in the stand alone player, I
>> cannot display the closed captions, although I have the option for
>> closed caption activated in the players setup menu. What a shambles
>> of standards eh...?
> Since CC is an analog standard, I've no idea how it could be present
> on a digital DVD without the DVD player's knowledge - how would the
> info get to the blanking interval without the DVD player doing so?
I'm not sure what you mean. The OP, who lives in the Netherlands, says
he has a DVD - presumably an imported NTSC format movie - with line 21
CC data on it. (It's not actually stored in "line 21" on the DVD, but as
a separate data stream that is interspersed with the MPEG video. The DVD
player is supposed to handle the VBI insertion during playback.) His
software-based DVD player application recognizes the captions and can
display them on a PC screen, but the problem is that his stand-alone DVD
player doesn't seem able to do the same.
Since he is using a European tv set, one plausible explanation is that
his DVD player _will_ insert the CC data on line 21, as it should, but
his tv set simply doesn't have a CC decoder that would enable viewing
it.
--
znark
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