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-rw-r--r--libavcodec/motionpixels.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/libavcodec/motionpixels.c b/libavcodec/motionpixels.c
index 70b499eabe..1564ea1151 100644
--- a/libavcodec/motionpixels.c
+++ b/libavcodec/motionpixels.c
@@ -52,14 +52,16 @@ typedef struct MotionPixelsContext {
static av_cold int mp_decode_init(AVCodecContext *avctx)
{
MotionPixelsContext *mp = avctx->priv_data;
+ int w4 = (avctx->width + 3) & ~3;
+ int h4 = (avctx->height + 3) & ~3;
motionpixels_tableinit();
mp->avctx = avctx;
dsputil_init(&mp->dsp, avctx);
- mp->changes_map = av_mallocz(avctx->width * avctx->height);
+ mp->changes_map = av_mallocz(avctx->width * h4);
mp->offset_bits_len = av_log2(avctx->width * avctx->height) + 1;
mp->vpt = av_mallocz(avctx->height * sizeof(YuvPixel));
- mp->hpt = av_mallocz(avctx->height * avctx->width / 16 * sizeof(YuvPixel));
+ mp->hpt = av_mallocz(h4 * w4 / 16 * sizeof(YuvPixel));
avctx->pix_fmt = PIX_FMT_RGB555;
return 0;
}