avcodec/libx264: return error if unknown picture type encountered

Signed-off-by: Limin Wang <lance.lmwang@gmail.com>

diff --git a/libavcodec/libx264.c b/libavcodec/libx264.c
index c13e8a58d4a8a575c11cc6500dfc2245f0974172..4121b2807a84df7843ddae480846ff833a00891d 100644 (file)
--- a/libavcodec/libx264.c
+++ b/libavcodec/libx264.c
@@ -476,7 +476,8 @@ static int X264_frame(AVCodecContext *ctx, AVPacket *pkt, const AVFrame *frame,
         pict_type = AV_PICTURE_TYPE_B;
         break;
     default:
-        pict_type = AV_PICTURE_TYPE_NONE;
+        av_log(ctx, AV_LOG_ERROR, "Unknown picture type encountered.\n");
+        return AVERROR_EXTERNAL;
     }
 #if FF_API_CODED_FRAME
 FF_DISABLE_DEPRECATION_WARNINGS