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-rw-r--r--libavutil/rational.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavutil/rational.h b/libavutil/rational.h
index 43fc22114f..140ce66822 100644
--- a/libavutil/rational.h
+++ b/libavutil/rational.h
@@ -56,7 +56,7 @@ static inline double av_q2d(AVRational a){
/**
* reduce a fraction.
- * this is usefull for framerate calculations
+ * This is useful for framerate calculations.
* @param max the maximum allowed for dst_nom & dst_den
* @return 1 if exact, 0 otherwise
*/