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-rw-r--r--libavcodec/mpegvideo.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libavcodec/mpegvideo.c b/libavcodec/mpegvideo.c
index 92b301dbba..5da9c98d90 100644
--- a/libavcodec/mpegvideo.c
+++ b/libavcodec/mpegvideo.c
@@ -2221,7 +2221,7 @@ static av_always_inline void mpeg_motion_lowres(MpegEncContext *s,
ptr_cb = ref_picture[1] + uvsrc_y * uvlinesize + uvsrc_x;
ptr_cr = ref_picture[2] + uvsrc_y * uvlinesize + uvsrc_x;
- if ((unsigned) src_x > FFMAX( h_edge_pos - (!!sx) - 2 * block_s, 0) ||
+ if ((unsigned) src_x > FFMAX( h_edge_pos - (!!sx) - 2 * block_s, 0) || uvsrc_y<0 ||
(unsigned) src_y > FFMAX((v_edge_pos >> field_based) - (!!sy) - h, 0)) {
s->vdsp.emulated_edge_mc(s->edge_emu_buffer, ptr_y,
linesize >> field_based, 17, 17 + field_based,