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-rw-r--r--libavformat/yuv4mpeg.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/libavformat/yuv4mpeg.c b/libavformat/yuv4mpeg.c
index 699a63a681..c38d641e06 100644
--- a/libavformat/yuv4mpeg.c
+++ b/libavformat/yuv4mpeg.c
@@ -132,8 +132,9 @@ static int yuv4_write_packet(AVFormatContext *s, AVPacket *pkt)
// Adjust for smaller Cb and Cr planes
av_pix_fmt_get_chroma_sub_sample(st->codec->pix_fmt, &h_chroma_shift,
&v_chroma_shift);
- width >>= h_chroma_shift;
- height >>= v_chroma_shift;
+ // Shift right, rounding up
+ width = -(-width >> h_chroma_shift);
+ height = -(-height >> v_chroma_shift);
ptr1 = picture->data[1];
ptr2 = picture->data[2];