Fix incorrect calculation of extension block number (EBN); previously

an incorrect 0 would be used if the line length was exactly 112.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/stl_binary_writer.cc b/src/stl_binary_writer.cc
index 456bbe1..adb9e11 100644
--- a/src/stl_binary_writer.cc
+++ b/src/stl_binary_writer.cc
@@ -272,7 +272,7 @@ make_tti_blocks (list<Subtitle> const& subtitles, STLBinaryTables const& tables,
 			offset += this_time;
 
 			/* Extension block number.  Count up from 0 but use 0xff for the last one */
-			put_int_as_int (buffer + 3, this_time < block_size ? 0xff : block_number, 1);
+			put_int_as_int (buffer + 3, offset == text.length() ? 0xff : block_number, 1);
 			++block_number;
 
 			char* finished = new char[tti_size];