diff --git a/plot-timing.sh b/plot-timing.sh
index 9f6e6e4..dc65b88 100755
--- a/plot-timing.sh
+++ b/plot-timing.sh
@@ -5,7 +5,7 @@ set -ue
 TMPFILE="/dev/shm/plot-timing.tmp"
 IMAGE="timing.png"
 
-tail -1800 WS/mp4.timing | awk '				\
+tail -3600 WS/mp4.timing | awk '				\
 BEGIN	{							\
 	nbrames=360;
 	for (foo=0; foo<nbrames; foo++) {			\