avcodec/mss2: fix chroma dimensions

[ffmpeg] / libavcodec / mss2.c

diff --git a/libavcodec/mss2.c b/libavcodec/mss2.c
index 09b7abd44d0421f53168d31088de5215084ebd5d..505c981a450ea12a823fb9c77567a274f600c264 100644 (file)
--- a/libavcodec/mss2.c
+++ b/libavcodec/mss2.c
@@ -421,8 +421,8 @@ static int decode_wmv9(AVCodecContext *avctx, const uint8_t *buf, int buf_size,
 
     if (v->respic == 3) {
         ctx->dsp.upsample_plane(f->data[0], f->linesize[0], w,      h);
-        ctx->dsp.upsample_plane(f->data[1], f->linesize[1], w >> 1, h >> 1);
-        ctx->dsp.upsample_plane(f->data[2], f->linesize[2], w >> 1, h >> 1);
+        ctx->dsp.upsample_plane(f->data[1], f->linesize[1], w+1 >> 1, h+1 >> 1);
+        ctx->dsp.upsample_plane(f->data[2], f->linesize[2], w+1 >> 1, h+1 >> 1);
     } else if (v->respic)
         avpriv_request_sample(v->s.avctx,
                               "Asymmetric WMV9 rectangle subsampling");