diff options
Diffstat (limited to 'doc/indevs.texi')
| -rw-r--r-- | doc/indevs.texi | 10 |
1 files changed, 10 insertions, 0 deletions
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 |