diff --git a/libffmpegthumbnailer/moviedecoder.cpp b/libffmpegthumbnailer/moviedecoder.cpp
index f45eb99..421e429 100644
--- a/libffmpegthumbnailer/moviedecoder.cpp
+++ b/libffmpegthumbnailer/moviedecoder.cpp
@@ -318,7 +318,7 @@ std::string MovieDecoder::createScaleString(const std::string& sizeString, bool
     return scale.str();
 }
 
-void MovieDecoder::initializeFilterGraph(const AVRational& timeBase, const std::string& size, bool maintainAspectRatio)
+void MovieDecoder::initializeFilterGraph(AVRational timeBase, const std::string& size, bool maintainAspectRatio)
 {
     m_pFilterGraph = avfilter_graph_alloc();
     assert(m_pFilterGraph);
diff --git a/libffmpegthumbnailer/moviedecoder.h b/libffmpegthumbnailer/moviedecoder.h
index 22113d4..26ab39a 100644
--- a/libffmpegthumbnailer/moviedecoder.h
+++ b/libffmpegthumbnailer/moviedecoder.h
@@ -64,7 +64,7 @@ class MovieDecoder
     int32_t findPreferredVideoStream(bool preferEmbeddedMetadata);
 
     void initializeVideo(bool preferEmbeddedMetadata);
-    void initializeFilterGraph(const AVRational& timeBase, const std::string& size, bool maintainAspectRatio);
+    void initializeFilterGraph(AVRational timeBase, const std::string& size, bool maintainAspectRatio);
 
     bool decodeVideoPacket();
     bool getVideoPacket();
diff --git a/libffmpegthumbnailer/videothumbnailer.cpp b/libffmpegthumbnailer/videothumbnailer.cpp
index 6e2c8da..9294bc3 100644
--- a/libffmpegthumbnailer/videothumbnailer.cpp
+++ b/libffmpegthumbnailer/videothumbnailer.cpp
@@ -318,7 +318,7 @@ void VideoThumbnailer::clearFilters()
 
 void VideoThumbnailer::setLogCallback(std::function<void(ThumbnailerLogLevel, const std::string&)> cb)
 {
-    m_LogCb = cb;
+    m_LogCb = std::move(cb);
 }
 
 void VideoThumbnailer::applyFilters(VideoFrame& frameData)