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authorMarton Balint <cus@passwd.hu>2016-01-21 23:57:50 +0100
committerMarton Balint <cus@passwd.hu>2016-01-25 22:15:27 +0100
commit73e4565dff92d372e53a2073b65a3c88d0ac8baa (patch)
treeabe504fd8e73ac6de3584f7fdb6ed701bb256235 /doc/decoders.texi
parent92f2a9dbc501f3d3423253b00fc25bb9bd330657 (diff)
lavc/libzvbi-teletextdec: add support for setting background opacity
Signed-off-by: Marton Balint <cus@passwd.hu>
Diffstat (limited to 'doc/decoders.texi')
-rw-r--r--doc/decoders.texi8
1 files changed, 7 insertions, 1 deletions
diff --git a/doc/decoders.texi b/doc/decoders.texi
index a6eb573a89..35771140e1 100644
--- a/doc/decoders.texi
+++ b/doc/decoders.texi
@@ -282,7 +282,13 @@ Sets the display duration of the decoded teletext pages or subtitles in
miliseconds. Default value is 30000 which is 30 seconds.
@item txt_transparent
Force transparent background of the generated teletext bitmaps. Default value
-is 0 which means an opaque (black) background.
+is 0 which means an opaque background.
+@item txt_opacity
+Sets the opacity (0-255) of the teletext background. If
+@option{txt_transparent} is not set, it only affects characters between a start
+box and an end box, typically subtitles. Default value is 0 if
+@option{txt_transparent} is set, 255 otherwise.
+
@end table
@c man end SUBTILES DECODERS