use AV_LOG_ERROR instead of INFO for errors

Originally committed as revision 9078 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavcodec/mpegvideo.c

@@ -1020,7 +1020,7 @@ int MPV_encode_init(AVCodecContext *avctx)
     }
 
     if(avctx->rc_min_rate && avctx->rc_min_rate > avctx->bit_rate){
-        av_log(avctx, AV_LOG_INFO, "bitrate below min bitrate\n");
+        av_log(avctx, AV_LOG_ERROR, "bitrate below min bitrate\n");
         return -1;
     }
 
@@ -1030,12 +1030,12 @@ int MPV_encode_init(AVCodecContext *avctx)
     }
 
     if(avctx->rc_buffer_size && avctx->bit_rate*av_q2d(avctx->time_base) > avctx->rc_buffer_size){
-        av_log(avctx, AV_LOG_INFO, "VBV buffer too small for bitrate\n");
+        av_log(avctx, AV_LOG_ERROR, "VBV buffer too small for bitrate\n");
         return -1;
     }
 
     if(avctx->bit_rate*av_q2d(avctx->time_base) > avctx->bit_rate_tolerance){
-        av_log(avctx, AV_LOG_INFO, "bitrate tolerance too small for bitrate\n");
+        av_log(avctx, AV_LOG_ERROR, "bitrate tolerance too small for bitrate\n");
         return -1;
     }