Subtitles & Closed Captions

[srfscenar]

Hi all,
about a clip,my customer asked for English subtitles and Closed Captions. Can someone explain to me what does he mean by Closed Captions?
Is it the regular subtitles which folows the movie or is it something special?

Best Regards

[srfscenar]

I got it...Its subtitles for the hearing impaired right?
I should have done a better search before posting here.
Sorry all.

[slk001]

I got it...Its subtitles for the hearing impaired right?
I should have done a better search before posting here.
Sorry all.

Well, no, not exactly. Subtitles are bitmapped images that are overlayed on the DVD output by the DVD player. They are controlled from the DVD player remote.

Closed captions are captions that reside in the actual video stream, specifically on Line 21 of the VBI. They are controlled by the "CC" button on the television remote.

Most NTSC commercial DVDs include both subtitles and closed captions. For more information about closed captions go to McPoodle's website (do a forum search).

[srfscenar]

thanx for ur answer.please tell me something. does line 21 exist on pal dvd's or is it on ntsc only?
my project is pal.
thanx.

[mpucoder]

PAL does not have CC, that is NTSC only. What PAL does have, but is not supported by DVD, is TeleText.