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avconv: use lrint() for rounding double timestamps

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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>
This commit is contained in:
Mans Rullgard 2012-05-10 12:19:10 +01:00
parent 110d0cdc9d
commit 4f1500689d
2 changed files with 3 additions and 3 deletions
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4
avconv.c
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@ -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);

2
tests/ref/fate/vc1-ism
View File

@ -118,4 +118,4 @@
0, 48750000, 48750000, 0, 37440, 0xf0fe8c1c
0, 49170000, 49170000, 0, 37440, 0xc0036222
0, 49590000, 49590000, 0, 37440, 0x3058385c
0, 49798332, 49798332, 0, 37440, 0x68141016
0, 49798330, 49798330, 0, 37440, 0x68141016