Don't both updating analysis fps unless we are doing motion detection

src/zm_monitor.cpp

@@ -2267,6 +2267,7 @@ bool Monitor::Analyse() {
     // Only do these if it's a video packet.
     shared_data->last_read_index = snap->image_index;
     analysis_image_count++;
+    if ( function == MODECT or function == MOCORD )
       UpdateAnalysisFPS();
   }
   shared_data->last_read_time = time(nullptr);
@@ -2549,10 +2550,12 @@ int Monitor::Capture() {
             // avcodec strips out important nals that describe the stream and 
             // stick them in extradata. Need to send them along with keyframes
             AVStream *stream = camera->get_VideoStream();
+#if LIBAVCODEC_VERSION_CHECK(57, 64, 0, 64, 0)
             video_fifo->write(
                 static_cast<unsigned char *>(stream->codecpar->extradata),
                 stream->codecpar->extradata_size,
                 packet->pts);
+#endif
           }
           video_fifo->writePacket(*packet);
         }