[FFmpeg-devel] [PATCH] avfilter/af_atempo: fix drift calculation, ticket #6157

[pkoshevoy at gmail.com]

From: Pavel Koshevoy <pkoshevoy at gmail.com>

---
 libavfilter/af_atempo.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/libavfilter/af_atempo.c b/libavfilter/af_atempo.c
index a487882..eb62656 100644
--- a/libavfilter/af_atempo.c
+++ b/libavfilter/af_atempo.c
@@ -697,11 +697,11 @@ static int yae_adjust_position(ATempoContext *atempo)
     AudioFragment       *frag = yae_curr_frag(atempo);
 
     const double prev_output_position =
-        (double)(prev->position[1] - atempo->origin[1] + atempo->window / 2);
+        (double)(prev->position[1] - atempo->origin[1] + atempo->window / 2) *
+        atempo->tempo;
 
     const double ideal_output_position =
-        (double)(prev->position[0] - atempo->origin[0] + atempo->window / 2) /
-        atempo->tempo;
+        (double)(prev->position[0] - atempo->origin[0] + atempo->window / 2);
 
     const int drift = (int)(prev_output_position - ideal_output_position);
 
-- 
2.6.6