avconv: use lrint() for rounding double timestamps

Converting the double to float for lrintf() loses precision when
the value is not exactly representable as a single-precision float.
Apart from being inaccurate, this causes discrepancies in some
configurations due to differences in rounding.

Note that the changed timestamp in the vc1-ism test is a bogus,
made-up value.

Signed-off-by: Mans Rullgard <mans@mansr.com>

1 files changed, 2 insertions, 2 deletions

diff --git a/avconv.c b/avconv.c
index 1aed70413b..c157778869 100644
--- a/avconv.c
+++ b/avconv.c
@@ -1697,10 +1697,10 @@ static void do_video_out(AVFormatContext *s,
         if (delta <= -0.6)
             nb_frames = 0;
         else if (delta > 0.6)
-            ost->sync_opts = lrintf(sync_ipts);
+            ost->sync_opts = lrint(sync_ipts);
         break;
     case VSYNC_PASSTHROUGH:
-        ost->sync_opts = lrintf(sync_ipts);
+        ost->sync_opts = lrint(sync_ipts);
         break;
     default:
         av_assert0(0);