From 995c7a6f5ad480d706b22e97609e2cce2f305e4b Mon Sep 17 00:00:00 2001 From: Marton Balint Date: Tue, 12 Jan 2016 03:09:37 +0100 Subject: lavd/decklink_dec: add support for teletext It uses the libzvbi slicer, therefore teletext capture requires libzvbi. Reviewed-by: Deti Fliegl Signed-off-by: Marton Balint --- doc/indevs.texi | 10 ++++++++++ 1 file changed, 10 insertions(+) (limited to 'doc/indevs.texi') diff --git a/doc/indevs.texi b/doc/indevs.texi index 6cf626d104..a3ed0e7405 100644 --- a/doc/indevs.texi +++ b/doc/indevs.texi @@ -236,6 +236,16 @@ Defaults to @option{false}. If set to @samp{1}, video is captured in 10 bit v210 instead of uyvy422. Not all Blackmagic devices support this option. +@item teletext_lines +If set to nonzero, an additional teletext stream will be captured from the +vertical ancillary data. This option is a bitmask of the VBI lines checked, +specifically lines 6 to 22, and lines 318 to 335. Line 6 is the LSB in the mask. +Selected lines which do not contain teletext information will be ignored. You +can use the special @option{all} constant to select all possible lines, or +@option{standard} to skip lines 6, 318 and 319, which are not compatible with all +receivers. Capturing teletext only works for SD PAL sources in 8 bit mode. +To use this option, ffmpeg needs to be compiled with @code{--enable-libzvbi}. + @end table @subsection Examples -- cgit v1.2.3