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PrepareSnapshotSize repair

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Former-commit-id: 0da0b0c156
This commit is contained in:
jianxingwu 2020-05-15 17:26:34 +08:00
parent bf5e732ad5
commit 2fa9255d40
1 changed files with 6 additions and 6 deletions
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4
FFMpegCore/FFMpeg/FFMpeg.cs
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@ -75,7 +75,7 @@ public static Bitmap Snapshot(MediaAnalysis source, Size? size = null, TimeSpan?
{
if (size.Value.Width == 0)
{
var ratio = source.PrimaryVideoStream.Height / (double) size.Value.Height;
var ratio = (double)size.Value.Height / source.PrimaryVideoStream.Height;
size = new Size((int)(source.PrimaryVideoStream.Width * ratio),
(int)(source.PrimaryVideoStream.Height * ratio));
@ -83,7 +83,7 @@ public static Bitmap Snapshot(MediaAnalysis source, Size? size = null, TimeSpan?
if (size.Value.Height == 0)
{
var ratio = source.PrimaryVideoStream.Width / (double) size.Value.Width;
var ratio = (double)size.Value.Width / source.PrimaryVideoStream.Width;
size = new Size((int)(source.PrimaryVideoStream.Width * ratio),
(int)(source.PrimaryVideoStream.Height * ratio));