diff --git a/lib/encode.cpp b/lib/encode.cpp
index 32bd8da6..41609a6f 100644
--- a/lib/encode.cpp
+++ b/lib/encode.cpp
@@ -102,6 +102,16 @@ namespace Encodings {
     return r;
   }
 
+  /// Decodes a hex-encoded std::string to a raw binary std::string.
+  std::string Hex::decode(const std::string & in){
+    std::string ret(in.size()/2, '\000');
+    for (size_t i = 0; i < in.size(); ++i){
+      char c = in[i];
+      ret[i>>1] |= ((c&15) + (((c&64)>>6) | ((c&64)>>3))) << ((~i&1) << 2);
+    }
+    return ret;
+  }
+
   /// urlencodes std::string data, leaving only the characters A-Za-z0-9~!&()' alone.
   std::string URL::encode(const std::string & c){
     std::string escaped = "";
diff --git a/lib/encode.h b/lib/encode.h
index c7fb2eac..a604bb42 100644
--- a/lib/encode.h
+++ b/lib/encode.h
@@ -33,6 +33,9 @@ namespace Encodings {
     }
     /// Encodes a single character as two hex digits in string form.
     static std::string chr(char dec);
+
+    /// Decodes a hex-encoded std::string to a raw binary std::string.
+    static std::string decode(const std::string & in);
   };
 
 }
diff --git a/lib/h264.cpp b/lib/h264.cpp
index 1a659fa8..97bd6320 100644
--- a/lib/h264.cpp
+++ b/lib/h264.cpp
@@ -102,13 +102,13 @@ namespace h264 {
 
   SPSMeta sequenceParameterSet::getCharacteristics()  const {
     SPSMeta result;
+    result.sep_col_plane = false;
 
     //For calculating width
     unsigned int widthInMbs = 0;
     unsigned int cropHorizontal = 0;
 
     //For calculating height
-    bool mbsOnlyFlag = 0;
     unsigned int heightInMapUnits = 0;
     unsigned int cropVertical = 0;
 
@@ -135,11 +135,11 @@ namespace h264 {
       //chroma format idc
       char chromaFormatIdc = bs.getUExpGolomb();
       if (chromaFormatIdc == 3) {
-        bs.skip(1);
+        result.sep_col_plane = (bs.get(1) == 1);
       }
-      bs.getUExpGolomb();
-      bs.getUExpGolomb();
-      bs.skip(1);
+      bs.getUExpGolomb();//luma
+      bs.getUExpGolomb();//chroma
+      bs.skip(1);//transform bypass
       if (bs.get(1)) {//Scaling matrix is present
         char listSize = (chromaFormatIdc == 3 ? 12 : 8);
         for (size_t i = 0; i < listSize; i++){
@@ -154,23 +154,23 @@ namespace h264 {
         }
       }
     }
-    bs.getUExpGolomb();
-    unsigned int pic_order_cnt_type = bs.getUExpGolomb();
-    if (!pic_order_cnt_type) {
-      bs.getUExpGolomb();
-    } else if (pic_order_cnt_type == 1) {
+    result.log2_max_frame_num = bs.getUExpGolomb() + 4;
+    result.cnt_type = bs.getUExpGolomb();
+    if (!result.cnt_type) {
+      result.log2_max_order_cnt = bs.getUExpGolomb() + 4;
+    } else if (result.cnt_type == 1) {
       DEBUG_MSG(DLVL_DEVEL, "This part of the implementation is incomplete(2), to be continued. If this message is shown, contact developers immediately.");
     }
-    bs.getUExpGolomb();
-    bs.skip(1);
-    //Stop skipping data and start doing usefull stuff
+    result.max_ref_frames = bs.getUExpGolomb();//max_num_ref_frames
+    result.gaps = (bs.get(1) == 1);//gaps in frame num allowed
+    //Stop skipping data and start doing useful stuff
 
 
     widthInMbs = bs.getUExpGolomb() + 1;
     heightInMapUnits = bs.getUExpGolomb() + 1;
 
-    mbsOnlyFlag = bs.get(1);//Gets used in height calculation
-    if (!mbsOnlyFlag) {
+    result.mbs_only = (bs.get(1) == 1);//Gets used in height calculation
+    if (!result.mbs_only) {
       bs.skip(1);
     }
     bs.skip(1);
@@ -214,7 +214,7 @@ namespace h264 {
     }
 
     result.width = (widthInMbs * 16) - (cropHorizontal * 2);
-    result.height = ((mbsOnlyFlag ? 1 : 2) * heightInMapUnits * 16) - (cropVertical * 2);
+    result.height = ((result.mbs_only ? 1 : 2) * heightInMapUnits * 16) - (cropVertical * 2);
     return result;
   }
 
diff --git a/lib/h264.h b/lib/h264.h
index 48fcfcc9..0afd0540 100644
--- a/lib/h264.h
+++ b/lib/h264.h
@@ -14,6 +14,13 @@ namespace h264 {
     double fps;
     uint8_t profile;
     uint8_t level;
+    bool sep_col_plane;
+    uint8_t cnt_type;
+    bool gaps;///< Gaps in frame num allowed flag
+    bool mbs_only;///<MBS only flag
+    uint16_t log2_max_frame_num;
+    uint16_t log2_max_order_cnt;
+    uint16_t max_ref_frames;///<Maximum number of reference frames
   };
 
   ///Class for analyzing generic nal units
diff --git a/lib/http_parser.cpp b/lib/http_parser.cpp
index f353c0dd..165d5761 100644
--- a/lib/http_parser.cpp
+++ b/lib/http_parser.cpp
@@ -305,12 +305,28 @@ std::string HTTP::Parser::getUrl() {
 }
 
 /// Returns header i, if set.
-std::string HTTP::Parser::GetHeader(std::string i) {
-  return headers[i];
+const std::string & HTTP::Parser::GetHeader(const std::string & i) const {
+  if (headers.count(i)){
+    return headers.at(i);
+  }else{
+    static const std::string empty;
+    return empty;
+  }
 }
+
+/// Returns header i, if set.
+bool HTTP::Parser::hasHeader(const std::string & i) const {
+  return headers.count(i);
+}
+
 /// Returns POST variable i, if set.
-std::string HTTP::Parser::GetVar(std::string i) {
-  return vars[i];
+const std::string & HTTP::Parser::GetVar(const std::string & i) const {
+  if (vars.count(i)){
+    return vars.at(i);
+  }else{
+    static const std::string empty;
+    return empty;
+  }
 }
 
 std::string HTTP::Parser::allVars(){
diff --git a/lib/http_parser.h b/lib/http_parser.h
index 52084ab1..5a716af6 100644
--- a/lib/http_parser.h
+++ b/lib/http_parser.h
@@ -16,9 +16,10 @@ namespace HTTP {
       Parser();
       bool Read(Socket::Connection & conn);
       bool Read(std::string & strbuf);
-      std::string GetHeader(std::string i);
+      const std::string & GetHeader(const std::string & i) const;
+      bool hasHeader(const std::string & i) const;
       void clearHeader(const std::string & i);
-      std::string GetVar(std::string i);
+      const std::string & GetVar(const std::string & i) const;
       std::string getUrl();
       std::string allVars();
       void SetHeader(std::string i, std::string v);
diff --git a/lib/socket.cpp b/lib/socket.cpp
index 3196e589..2a22d0cb 100644
--- a/lib/socket.cpp
+++ b/lib/socket.cpp
@@ -1029,8 +1029,12 @@ Socket::UDPConnection::UDPConnection(const UDPConnection & o) {
     destAddr = 0;
     destAddr_size = 0;
   }
-  data = 0;
-  data_size = 0;
+  data = (char*)malloc(1024);
+  if (data){
+    data_size = 1024;
+  }else{
+    data_size = 0;
+  }
   data_len = 0;
 }
 
@@ -1109,6 +1113,19 @@ void Socket::UDPConnection::GetDestination(std::string & destIp, uint32_t & port
   DEBUG_MSG(DLVL_FAIL, "Could not get destination for UDP socket");
 }//Socket::UDPConnection GetDestination
 
+/// Returns the port number of the receiving end of this socket.
+/// Returns 0 on error.
+uint32_t Socket::UDPConnection::getDestPort() const{
+  if (!destAddr || !destAddr_size){return 0;}
+  if (((struct sockaddr_in *)destAddr)->sin_family == AF_INET6) {
+    return ntohs(((struct sockaddr_in6 *)destAddr)->sin6_port);
+  }
+  if (((struct sockaddr_in *)destAddr)->sin_family == AF_INET) {
+    return ntohs(((struct sockaddr_in *)destAddr)->sin_port);
+  }
+  return 0;
+}
+
 /// Sets the socket to be blocking if the parameters is true.
 /// Sets the socket to be non-blocking otherwise.
 void Socket::UDPConnection::setBlocking(bool blocking) {
@@ -1220,20 +1237,22 @@ bool Socket::UDPConnection::Receive() {
     data_size = SOCKETSIZE;
   }
 #endif
-  int r = recvfrom(sock, data, data_size, MSG_PEEK | MSG_TRUNC, 0, 0);
+  int r = recvfrom(sock, data, data_size, MSG_PEEK | MSG_TRUNC | MSG_DONTWAIT, 0, 0);
   if (r == -1) {
     if (errno != EAGAIN) {
-      INFO_MSG("Found an error: %d (%s)", errno, strerror(errno));
+      INFO_MSG("UDP receive: %d (%s)", errno, strerror(errno));
     }
     data_len = 0;
     return false;
   }
   if (data_size < (unsigned int)r) {
-    data = (char *)realloc(data, r);
-    if (data) {
+    char* tmp = (char*)realloc(data, r);
+    if (tmp) {
+      data = tmp;
       data_size = r;
-    } else {
-      data_size = 0;
+    }else{
+      FAIL_MSG("Could not resize socket buffer to %d bytes!", r);
+      return false;
     }
   }
   socklen_t destsize = destAddr_size;
diff --git a/lib/socket.h b/lib/socket.h
index 0d74cd95..fb776972 100644
--- a/lib/socket.h
+++ b/lib/socket.h
@@ -142,6 +142,7 @@ namespace Socket {
       void setBlocking(bool blocking);
       void SetDestination(std::string hostname, uint32_t port);
       void GetDestination(std::string & hostname, uint32_t & port);
+      uint32_t getDestPort() const;
       bool Receive();
       void SendNow(const std::string & data);
       void SendNow(const char * data);
diff --git a/src/io.cpp b/src/io.cpp
index b3bf5853..e539621e 100644
--- a/src/io.cpp
+++ b/src/io.cpp
@@ -735,7 +735,7 @@ namespace Mist {
             break;
           }
 
-          MEDIUM_MSG("Buffer has indicated that incoming track %lu should start writing on track %lu, page %lu", tid, finalTid, firstPage);
+          MEDIUM_MSG("Buffer says %s:%lu should start writing on track %lu, page %lu", streamName.c_str(), tid, finalTid, firstPage);
           trackMap[tid] = finalTid;
           if (myMeta.tracks.count(finalTid) && myMeta.tracks[finalTid].lastms){
             myMeta.tracks[finalTid].lastms = 0;
diff --git a/src/output/output.cpp b/src/output/output.cpp
index b292331d..5cfc3a89 100644
--- a/src/output/output.cpp
+++ b/src/output/output.cpp
@@ -552,14 +552,31 @@ namespace Mist {
     return buffer.begin()->time;
   }
   
-  ///Return the end time of the VoD asset, or 0 if unknown.
+  ///Return the start time of the selected tracks.
+  uint64_t Output::startTime(){
+    uint64_t start = 0xFFFFFFFFFFFFFFFFull;
+    if (selectedTracks.size()){
+      for (std::set<long unsigned int>::iterator it = selectedTracks.begin(); it != selectedTracks.end(); it++){
+        if (myMeta.tracks.count(*it)){
+          if (start < myMeta.tracks[*it].firstms){
+            start = myMeta.tracks[*it].firstms;
+          }
+        }
+      }
+    }
+    return start;
+  }
+
+  ///Return the end time of the selected tracks, or 0 if unknown or live.
   uint64_t Output::endTime(){
     if (myMeta.live){return 0;}
     uint64_t end = 0;
-    for (std::set<long unsigned int>::iterator it = selectedTracks.begin(); it != selectedTracks.end(); it++){
-      if (myMeta.tracks.count(*it)){
-        if (end < myMeta.tracks[*it].lastms){
-          end = myMeta.tracks[*it].lastms;
+    if (selectedTracks.size()){
+      for (std::set<long unsigned int>::iterator it = selectedTracks.begin(); it != selectedTracks.end(); it++){
+        if (myMeta.tracks.count(*it)){
+          if (end < myMeta.tracks[*it].lastms){
+            end = myMeta.tracks[*it].lastms;
+          }
         }
       }
     }
diff --git a/src/output/output.h b/src/output/output.h
index 0e2f8589..82699d09 100644
--- a/src/output/output.h
+++ b/src/output/output.h
@@ -59,6 +59,7 @@ namespace Mist {
       bool seek(unsigned int tid, unsigned long long pos, bool getNextKey = false);
       void stop();
       uint64_t currentTime();
+      uint64_t startTime();
       uint64_t endTime();
       void setBlocking(bool blocking);
       long unsigned int getMainSelectedTrack();