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-rw-r--r--src/lib/delay_line.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/lib/delay_line.cc b/src/lib/delay_line.cc
index b0180800a..f6af6f9b1 100644
--- a/src/lib/delay_line.cc
+++ b/src/lib/delay_line.cc
@@ -50,7 +50,7 @@ void
DelayLine::process_video (shared_ptr<const Image> image, bool same, boost::shared_ptr<Subtitle> sub, double t)
{
if (_seconds < 0) {
- t += _seconds;
+ t -= _seconds;
}
Video (image, same, sub, t);