diff --git a/lib/dtsc.h b/lib/dtsc.h
index b1404431..d557c34b 100644
--- a/lib/dtsc.h
+++ b/lib/dtsc.h
@@ -324,7 +324,7 @@ namespace DTSC {
         return vod || live;
       }
       void reinit(const DTSC::Packet & source);
-      void update(DTSC::Packet & pack, unsigned long segment_size = 5000);
+      void update(const DTSC::Packet & pack, unsigned long segment_size = 5000);
       void updatePosOverride(DTSC::Packet & pack, uint64_t bpos);
       void update(JSON::Value & pack, unsigned long segment_size = 5000);
       void update(long long packTime, long long packOffset, long long packTrack, long long packDataSize, uint64_t packBytePos, bool isKeyframe, long long packSendSize = 0, unsigned long segment_size = 5000);
diff --git a/lib/dtscmeta.cpp b/lib/dtscmeta.cpp
index 9aa90975..7cfe2535 100644
--- a/lib/dtscmeta.cpp
+++ b/lib/dtscmeta.cpp
@@ -1438,7 +1438,7 @@ namespace DTSC {
   }
 
   ///\brief Updates a meta object given a DTSC::Packet
-  void Meta::update(DTSC::Packet & pack, unsigned long segment_size) {
+  void Meta::update(const DTSC::Packet & pack, unsigned long segment_size) {
     char * data;
     unsigned int dataLen;
     pack.getString("data", data, dataLen);
diff --git a/src/io.cpp b/src/io.cpp
index cf19c70f..d382532e 100644
--- a/src/io.cpp
+++ b/src/io.cpp
@@ -253,11 +253,11 @@ namespace Mist {
 
   ///Buffers the next packet on the currently opened page
   ///\param pack The packet to buffer
-  void InOutBase::bufferNext(DTSC::Packet & pack) {
+  void InOutBase::bufferNext(const DTSC::Packet & pack) {
     nProxy.bufferNext(pack, myMeta);
   }
 
-  void negotiationProxy::bufferNext(DTSC::Packet & pack, DTSC::Meta & myMeta) {
+  void negotiationProxy::bufferNext(const DTSC::Packet & pack, DTSC::Meta & myMeta) {
     static bool multiWrong = false;
     //Save the trackid of the track for easier access
     unsigned long tid = pack.getTrackId();
@@ -388,11 +388,11 @@ namespace Mist {
   ///
   ///Initiates/continues negotiation with the buffer as well
   ///\param packet The packet to buffer
-  void InOutBase::bufferLivePacket(DTSC::Packet & packet){
+  void InOutBase::bufferLivePacket(const DTSC::Packet & packet){
     nProxy.bufferLivePacket(packet, myMeta);
   }
 
-  void negotiationProxy::bufferLivePacket(DTSC::Packet & packet, DTSC::Meta & myMeta){
+  void negotiationProxy::bufferLivePacket(const DTSC::Packet & packet, DTSC::Meta & myMeta){
     myMeta.vod = false;
     myMeta.live = true;
     //Store the trackid for easier access
@@ -426,7 +426,7 @@ namespace Mist {
     }
   }
 
-  void negotiationProxy::bufferSinglePacket(DTSC::Packet & packet, DTSC::Meta & myMeta){
+  void negotiationProxy::bufferSinglePacket(const DTSC::Packet & packet, DTSC::Meta & myMeta){
     //Store the trackid for easier access
     unsigned long tid = packet.getTrackId();
     //This update needs to happen whether the track is accepted or not.
diff --git a/src/io.h b/src/io.h
index 3e85b902..c95e4d90 100644
--- a/src/io.h
+++ b/src/io.h
@@ -30,10 +30,10 @@ namespace Mist {
       negotiationProxy();
       void clear();
       bool bufferStart(unsigned long tid, unsigned long pageNumber, DTSC::Meta & myMeta);
-      void bufferNext(DTSC::Packet & pack, DTSC::Meta & myMeta);
+      void bufferNext(const DTSC::Packet & pack, DTSC::Meta & myMeta);
       void bufferFinalize(unsigned long tid, DTSC::Meta &myMeta);
-      void bufferLivePacket(DTSC::Packet & packet, DTSC::Meta & myMeta);
-      void bufferSinglePacket(DTSC::Packet & packet, DTSC::Meta & myMeta);
+      void bufferLivePacket(const DTSC::Packet & packet, DTSC::Meta & myMeta);
+      void bufferSinglePacket(const DTSC::Packet & packet, DTSC::Meta & myMeta);
       bool isBuffered(unsigned long tid, unsigned long keyNum);
       unsigned long bufferedOnPage(unsigned long tid, unsigned long keyNum);
 
@@ -66,10 +66,10 @@ namespace Mist {
     public:
       void initiateMeta();
       bool bufferStart(unsigned long tid, unsigned long pageNumber);
-      void bufferNext(DTSC::Packet & pack);
+      void bufferNext(const DTSC::Packet & pack);
       void bufferFinalize(unsigned long tid);
       void bufferRemove(unsigned long tid, unsigned long pageNumber);
-      virtual void bufferLivePacket(DTSC::Packet & packet);
+      virtual void bufferLivePacket(const DTSC::Packet & packet);
     protected:
       void continueNegotiate(unsigned long tid, bool quickNegotiate = false);
       void continueNegotiate();
diff --git a/src/output/output.cpp b/src/output/output.cpp
index b6e06167..da6e444b 100644
--- a/src/output/output.cpp
+++ b/src/output/output.cpp
@@ -39,7 +39,7 @@ namespace Mist{
     cfg->addOption("noinput", option);
   }
   
-  void Output::bufferLivePacket(DTSC::Packet & packet){
+  void Output::bufferLivePacket(const DTSC::Packet & packet){
     if (!pushIsOngoing){
       waitForStreamPushReady();
     }
diff --git a/src/output/output.h b/src/output/output.h
index 14ce5258..6412322e 100644
--- a/src/output/output.h
+++ b/src/output/output.h
@@ -119,7 +119,7 @@ namespace Mist {
       bool allowPush(const std::string & passwd);
       void waitForStreamPushReady();
       bool pushIsOngoing;
-      void bufferLivePacket(DTSC::Packet & packet);
+      void bufferLivePacket(const DTSC::Packet & packet);
   };
 
 }