[FFmpeg-devel] [PATCH 1/2] svq3: fix decoding residual blocks of b-frames.

[Ronald S. Bultje]

From: "Ronald S. Bultje" <rsbultje at gmail.com>

The residual block data of 16x16 blocks was ignored for b-frames, which
leads to easy-to-identify artifacts. After this patch, the artifacts are
gone. Sample video: svq3_watermark.mov. (Fate results unaffected.)
---
 libavcodec/svq3.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/libavcodec/svq3.c b/libavcodec/svq3.c
index 10ee109..7817766 100644
--- a/libavcodec/svq3.c
+++ b/libavcodec/svq3.c
@@ -1237,7 +1237,7 @@ static int svq3_decode_frame(AVCodecContext *avctx, void *data,
                 return -1;
             }
 
-            if (mb_type != 0)
+            if (mb_type != 0 || h->cbp)
                 ff_h264_hl_decode_mb(h);
 
             if (h->pict_type != AV_PICTURE_TYPE_B && !h->low_delay)
-- 
1.7.11.3