diff --git a/lib/dtsc.h b/lib/dtsc.h
index a12c41f4..d0764bd7 100644
--- a/lib/dtsc.h
+++ b/lib/dtsc.h
@@ -322,6 +322,7 @@ namespace DTSC {
       unsigned int timeToFragnum(unsigned int timestamp);
       void reset();
       void toPrettyString(std::ostream & str, int indent = 0, int verbosity = 0);
+      void finalize();
       
       std::string getIdentifier();
       std::string getWritableIdentifier();
diff --git a/lib/dtscmeta.cpp b/lib/dtscmeta.cpp
index ec6019f8..49e357a7 100644
--- a/lib/dtscmeta.cpp
+++ b/lib/dtscmeta.cpp
@@ -1224,6 +1224,10 @@ namespace DTSC {
     fragments.rbegin()->setSize(fragments.rbegin()->getSize() + packDataSize);
   }
   
+  void Track::finalize(){
+    keys.rbegin()->setLength(lastms - keys.rbegin()->getTime() + parts.rbegin()->getDuration());
+  }
+  
   ///\brief Returns a key given its number, or an empty key if the number is out of bounds
   Key & Track::getKey(unsigned int keyNum) {
     static Key empty;
diff --git a/lib/mp4.cpp b/lib/mp4.cpp
index aaff926c..53e428cb 100644
--- a/lib/mp4.cpp
+++ b/lib/mp4.cpp
@@ -409,6 +409,10 @@ namespace MP4 {
       case 0x75756964:
         return ((UUID *)this)->toPrettyString(indent);
         break;
+      case 0x70617370:
+        return ((PASP*)this)->toPrettyString(indent);
+        break;
+      /*LTS-START*/
       case 0x73696478:
         return ((SIDX*)this)->toPrettyString(indent);
         break;
@@ -418,7 +422,6 @@ namespace MP4 {
       case 0x696F6473:
         return ((IODS*)this)->toPrettyString(indent);
         break;
-      /*LTS-START*/
       case 0x73696E66:
         return ((SINF *)this)->toPrettyString(indent);
         break;
diff --git a/lib/mp4_generic.cpp b/lib/mp4_generic.cpp
index 67cc0ec6..8fc57377 100644
--- a/lib/mp4_generic.cpp
+++ b/lib/mp4_generic.cpp
@@ -950,9 +950,10 @@ namespace MP4 {
     char * p = getData();
     char * max_p = p + getDataSize();
     r << std::string(indent+1, ' ') << "ES ID: " << (unsigned int)(((unsigned int)p[0] << 8) | (unsigned int)p[1]) << std::endl;
-    bool dep = (p[2] & 0x80);
+    bool dep = (p[2] & 0x80);//check pagina 28 ISO 1449-1 2001
     bool url = (p[2] & 0x40);
     bool ocr = (p[2] & 0x20);
+    //6 & 86
     r << std::string(indent+1, ' ') << "Priority: " << int(p[2] & 0x1f) << std::endl;
     p += 3;
     if (dep){
@@ -1093,7 +1094,7 @@ namespace MP4 {
   ESDS::ESDS(std::string init) {
     ///\todo Do this better, in a non-hardcoded way.
     memcpy(data + 4, "esds", 4);
-    reserve(payloadOffset, 0, init.size() ? init.size()+29 : 26);
+    reserve(payloadOffset, 0, init.size() ? init.size()+28 : 26);
     unsigned int i = 12;
     data[i++] = 3;//ES_DescrTag
     data[i++] = init.size() ? init.size()+23 : 21;//size
@@ -1127,7 +1128,7 @@ namespace MP4 {
     }
     data[i++] = 6;//SLConfigDescriptor
     data[i++] = 1;//size
-    data[i++] = 2;//predefined, reserverd for use in MP4 files
+    data[i++] = 2;//predefined, reserved for use in MP4 files
   }
  
   bool ESDS::isAAC(){
@@ -1153,9 +1154,35 @@ namespace MP4 {
     return r.str();
   }
 
-  DAC3::DAC3(){
+  DAC3::DAC3(unsigned int rate, unsigned int channels){
     memcpy(data + 4, "dac3", 4);
     setInt24(0,0);
+
+    setBitStreamIdentification(8);///\todo This is right now a default value. check the docs, this is a weird property
+    setBitStreamMode(0);//main, mixed audio
+    setAudioConfigMode(2);
+
+    switch (rate) {
+      case 48000:
+        setSampleRateCode(0);
+        break;
+      case 44100:
+        setSampleRateCode(1);
+        break;
+      case 32000:
+        setSampleRateCode(2);
+        break;
+      default:
+        setSampleRateCode(3);
+        break;
+    }
+
+    if (channels > 4) {
+      setLowFrequencyEffectsChannelOn(1);
+    } else {
+      setLowFrequencyEffectsChannelOn(0);
+    }
+    setFrameSizeCode(20);//should be OK, but test this.
   }
 
   char DAC3::getSampleRateCode(){
@@ -1222,11 +1249,12 @@ namespace MP4 {
     memcpy(data + 4, "ftyp", 4);
     if (fillDefaults){
       setMajorBrand("isom");
-      setMinorVersion("Mist");
+      setMinorVersion("\000\000\002\000");
       setCompatibleBrands("isom",0);
       setCompatibleBrands("iso2",1);
       setCompatibleBrands("avc1",2);
-      setCompatibleBrands("mp41",2);
+      setCompatibleBrands("mp41",3);
+      setCompatibleBrands("Mist",4);
     }
   }
   
@@ -1317,9 +1345,9 @@ namespace MP4 {
     memcpy(data + 4, "mvex", 4);
   }
 
-  TREX::TREX() {
+  TREX::TREX(unsigned int trackId){
     memcpy(data + 4, "trex", 4);
-    setTrackID(0);
+    setTrackID(trackId);
     setDefaultSampleDescriptionIndex(1);
     setDefaultSampleDuration(0);
     setDefaultSampleSize(0);
@@ -1727,7 +1755,7 @@ namespace MP4 {
     memcpy(data + 4, "mvhd", 4);
 
     //reserve an entire version 0 box
-    if (!reserve(0, 8, 108)) {
+    if (!reserve(0, 9, 108)) {
       return;//on fail, cancel all the things
     }
     memset(data + payloadOffset, 0, 100); //set all bytes (108 - 8) to zeroes
@@ -2108,26 +2136,41 @@ namespace MP4 {
     return r.str();
   }
 
+
   TKHD::TKHD(uint32_t trackId, uint64_t duration, uint32_t width, uint32_t height) {
+    initialize();
+    setTrackID(trackId);
+    setDuration(duration);
+    setWidth(width << 16);
+    setHeight(height << 16);
+  }
+
+  TKHD::TKHD(DTSC::Track & track, bool fragmented) {
+    initialize(); 
+    setTrackID(track.trackID);
+    setDuration(-1);
+    if (!fragmented) {
+      setDuration(track.lastms - track.firstms);
+    }
+    if (track.type == "video") {
+      setWidth(track.width << 16);
+      setHeight(track.height << 16);
+    }
+  }
+
+  void TKHD::initialize(){
     memcpy(data + 4, "tkhd", 4);
 
     //reserve an entire version 0 box
-    if (!reserve(0, 8, 92)) {
+    if (!reserve(0, 9, 92)) {
       return;//on fail, cancel all the things
     }
     memset(data + payloadOffset, 0, 84); //set all bytes (92 - 8) to zeroes
-
-    setFlags(15);//ENABLED | IN_MOVIE | IN_PREVIEW | IN_POSTER
-    setTrackID(trackId);
-    setDuration(duration);
-    if (width == 0 || height == 0) {
-      setVolume(0x0100);
-    }
+    setFlags(3);//ENABLED | IN_MOVIE 
     setMatrix(0x00010000, 0);
     setMatrix(0x00010000, 4);
     setMatrix(0x40000000, 8);
-    setWidth(width << 16);
-    setHeight(height << 16);
+    setVolume(0x0100);
   }
 
   void TKHD::setCreationTime(uint64_t newCreationTime) {
@@ -2325,7 +2368,7 @@ namespace MP4 {
   MDHD::MDHD(uint64_t duration) {
     memcpy(data + 4, "mdhd", 4);
     //reserve an entire version 0 box
-    if (!reserve(0, 8, 32)) {
+    if (!reserve(0, 9, 32)) {
       return;//on fail, cancel all the things
     }
     memset(data + payloadOffset, 0, 24); //set all bytes (32 - 8) to zeroes
@@ -2529,6 +2572,12 @@ namespace MP4 {
 
   }
 
+  STSCEntry::STSCEntry(unsigned int _first, unsigned int _count, unsigned int _index){
+    firstChunk = _first;
+    samplesPerChunk = _count;
+    sampleDescriptionIndex = _index;
+  }
+
   STSC::STSC(char v, uint32_t f) {
     memcpy(data + 4, "stsc", 4);
     setVersion(v);
@@ -2853,6 +2902,8 @@ namespace MP4 {
 
   PASP::PASP() {
     memcpy(data + 4, "pasp", 4);
+    setHSpacing(1);
+    setVSpacing(1);
   }
 
   void PASP::setHSpacing(uint32_t newVal) {
@@ -2880,6 +2931,25 @@ namespace MP4 {
   }
 
   VisualSampleEntry::VisualSampleEntry() {
+    initialize();
+  }
+
+  VisualSampleEntry::VisualSampleEntry(DTSC::Track & track){
+    initialize();
+    setDataReferenceIndex(1);
+    setWidth(track.width);
+    setHeight(track.height);
+    if (track.codec == "H264") {
+      setCodec("avc1");
+      MP4::AVCC avccBox;
+      avccBox.setPayload(track.init);
+      setCLAP(avccBox);
+    }
+    MP4::PASP paspBox;
+    setPASP(paspBox);
+  }
+
+  void VisualSampleEntry::initialize(){
     memcpy(data + 4, "erro", 4);
     setHorizResolution(0x00480000);
     setVertResolution(0x00480000);
@@ -2933,7 +3003,9 @@ namespace MP4 {
   }
 
   void VisualSampleEntry::setCompressorName(std::string newCompressorName) {
-    newCompressorName.resize(32, ' ');
+    if (newCompressorName.size() > 32){
+      newCompressorName.resize(32, ' ');
+    }
     setString(newCompressorName, 42);
   }
 
@@ -2962,6 +3034,15 @@ namespace MP4 {
     return ret;
   }
 
+  void VisualSampleEntry::setPASP(Box & pasp) {
+    int writePlace = 78;
+    Box tmpBox = getBox(78);
+    if (tmpBox.getType () != "erro"){
+      writePlace = 78 + getBoxLen(78);
+    }
+    setBox(pasp, writePlace);
+  }
+
   Box & VisualSampleEntry::getPASP() {
     static Box ret = Box((char *)"\000\000\000\010erro", false);
     if (payloadSize() < 84) { //if the EntryBox is not big enough to hold a CLAP/PASP
@@ -2996,6 +3077,31 @@ namespace MP4 {
   }
 
   AudioSampleEntry::AudioSampleEntry() {
+    initialize();
+  }
+
+  AudioSampleEntry::AudioSampleEntry(DTSC::Track & track) {
+    initialize();
+    if (track.codec == "AAC" || track.codec == "MP3") {
+      setCodec("mp4a");
+    }
+    if (track.codec == "AC3") {
+      setCodec("ac-3");
+    }
+    setDataReferenceIndex(1);
+    setSampleRate(track.rate);
+    setChannelCount(track.channels);
+    setSampleSize(track.size);
+    if (track.codec == "AC3") {
+      MP4::DAC3 dac3Box(track.rate, track.channels);
+      setCodecBox(dac3Box);
+    } else { //other codecs use the ESDS box
+      MP4::ESDS esdsBox(track.init);
+      setCodecBox(esdsBox);
+    }
+  }
+
+  void AudioSampleEntry::initialize() {
     memcpy(data + 4, "erro", 4);
     setChannelCount(2);
     setSampleSize(16);
@@ -3282,67 +3388,75 @@ namespace MP4 {
     memcpy(data + 4, "elst", 4);
   }
 
+  void ELST::setCount(uint32_t newVal){
+      setInt32(newVal, 4);
+  }
+  
+  uint32_t ELST::getCount(){
+    return getInt32(4);
+  }
+
   void ELST::setSegmentDuration(uint64_t newVal) {
     if (getVersion() == 1) {
-      setInt64(newVal, 4);
-    } else {
-      setInt32(newVal, 4);
-    }
-  }
-
-  uint64_t ELST::getSegmentDuration() {
-    if (getVersion() == 1) {
-      return getInt64(4);
-    } else {
-      return getInt32(4);
-    }
-  }
-
-  void ELST::setMediaTime(uint64_t newVal) {
-    if (getVersion() == 1) {
-      setInt64(newVal, 12);
+      setInt64(newVal, 8);
     } else {
       setInt32(newVal, 8);
     }
   }
 
-  uint64_t ELST::getMediaTime() {
+  uint64_t ELST::getSegmentDuration() {
     if (getVersion() == 1) {
-      return getInt64(12);
+      return getInt64(8);
     } else {
       return getInt32(8);
     }
   }
 
+  void ELST::setMediaTime(uint64_t newVal) {
+    if (getVersion() == 1) {
+      setInt64(newVal, 16);
+    } else {
+      setInt32(newVal, 12);
+    }
+  }
+
+  uint64_t ELST::getMediaTime() {
+    if (getVersion() == 1) {
+      return getInt64(16);
+    } else {
+      return getInt32(12);
+    }
+  }
+
   void ELST::setMediaRateInteger(uint16_t newVal) {
     if (getVersion() == 1) {
-      setInt16(newVal, 20);
+      setInt16(newVal, 24);
     } else {
-      setInt16(newVal, 12);
+      setInt16(newVal, 16);
     }
   }
 
   uint16_t ELST::getMediaRateInteger() {
     if (getVersion() == 1) {
-      return getInt16(20);
+      return getInt16(24);
     } else {
-      return getInt16(12);
+      return getInt16(16);
     }
   }
 
   void ELST::setMediaRateFraction(uint16_t newVal) {
     if (getVersion() == 1) {
-      setInt16(newVal, 22);
+      setInt16(newVal, 26);
     } else {
-      setInt16(newVal, 14);
+      setInt16(newVal, 18);
     }
   }
 
   uint16_t ELST::getMediaRateFraction() {
     if (getVersion() == 1) {
-      return getInt16(22);
+      return getInt16(26);
     } else {
-      return getInt16(14);
+      return getInt16(18);
     }
   }
 
@@ -3350,6 +3464,7 @@ namespace MP4 {
     std::stringstream r;
     r << std::string(indent, ' ') << "[elst] Edit List Box (" << boxedSize() << ")" << std::endl;
     r << fullBox::toPrettyString(indent);
+    r << std::string(indent + 1, ' ') << "Count: " << getCount() << std::endl;
     r << std::string(indent + 1, ' ') << "SegmentDuration: " << getSegmentDuration() << std::endl;
     r << std::string(indent + 1, ' ') << "MediaTime: " << getMediaTime() << std::endl;
     r << std::string(indent + 1, ' ') << "MediaRateInteger: " << getMediaRateInteger() << std::endl;
@@ -3357,4 +3472,3 @@ namespace MP4 {
     return r.str();
   }
 }
-
diff --git a/lib/mp4_generic.h b/lib/mp4_generic.h
index 3e1a15ad..6e82b8ca 100644
--- a/lib/mp4_generic.h
+++ b/lib/mp4_generic.h
@@ -235,7 +235,7 @@ namespace MP4 {
 
   class DAC3: public Box {
     public:
-      DAC3();
+      DAC3(unsigned int rate, unsigned int channels);
       char getSampleRateCode();//2bits
       void setSampleRateCode(char newVal);//2bits
       char getBitStreamIdentification();//5bits
@@ -282,7 +282,7 @@ namespace MP4 {
 
   class TREX: public fullBox {
     public:
-      TREX();
+      TREX(unsigned int trackId = 0);
       void setTrackID(uint32_t newTrackID);
       uint32_t getTrackID();
       void setDefaultSampleDescriptionIndex(uint32_t newDefaultSampleDescriptionIndex);
@@ -472,6 +472,8 @@ namespace MP4 {
   class TKHD: public fullBox {
     public:
       TKHD(uint32_t trackId, uint64_t duration, uint32_t width, uint32_t height);
+      TKHD(DTSC::Track & track, bool fragmented);
+
       void setCreationTime(uint64_t newCreationTime);
       uint64_t getCreationTime();
       void setModificationTime(uint64_t newModificationTime);
@@ -497,6 +499,8 @@ namespace MP4 {
       void setHeight(uint32_t newHeight);
       uint32_t getHeight();
       std::string toPrettyString(uint32_t indent = 0);
+    protected:
+      void initialize();
   };
 
   class MDHD: public fullBox {
@@ -546,10 +550,12 @@ namespace MP4 {
       std::string toPrettyString(uint32_t indent = 0);
   };
 
-  struct STSCEntry {
-    uint32_t firstChunk;
-    uint32_t samplesPerChunk;
-    uint32_t sampleDescriptionIndex;
+  class STSCEntry {
+    public:
+      STSCEntry(unsigned int _first = 0, unsigned int _count = 0, unsigned int _index = 0);
+      uint32_t firstChunk;
+      uint32_t samplesPerChunk;
+      uint32_t sampleDescriptionIndex;
   };
 
   class STSC: public fullBox {
@@ -638,6 +644,8 @@ namespace MP4 {
       ///\todo set default values
     public:
       VisualSampleEntry();
+      VisualSampleEntry(DTSC::Track & track);
+      void initialize();
       void setCodec(const char * newCodec);
       void setWidth(uint16_t newWidth);
       uint16_t getWidth();
@@ -656,6 +664,7 @@ namespace MP4 {
       Box & getCLAP();
       void setCLAP(Box & clap);
       Box & getPASP();
+      void setPASP(Box & pasp);
       std::string toPrettyVisualString(uint32_t index = 0, std::string = "");
   };
 
@@ -663,6 +672,8 @@ namespace MP4 {
     public:
       ///\todo set default values
       AudioSampleEntry();
+      AudioSampleEntry(DTSC::Track & track);
+      void initialize();
       void setCodec(const char * newCodec);
       void setChannelCount(uint16_t newChannelCount);
       uint16_t getChannelCount();
@@ -768,6 +779,8 @@ namespace MP4 {
   class ELST: public fullBox {
     public:
       ELST();
+      void setCount(uint32_t newVal);
+      uint32_t getCount();
       void setSegmentDuration(uint64_t newVal);
       uint64_t getSegmentDuration();
       void setMediaTime(uint64_t newVal);
diff --git a/src/output/output.cpp b/src/output/output.cpp
index 83532ab4..8557e6bc 100644
--- a/src/output/output.cpp
+++ b/src/output/output.cpp
@@ -50,10 +50,12 @@ namespace Mist {
     sought = false;
     isInitialized = false;
     isBlocking = false;
+    completeKeysOnly = false;
     lastStats = 0;
     maxSkipAhead = 7500;
     minSkipAhead = 5000;
     realTime = 1000;
+    completeKeyReadyTimeOut = false;
     if (myConn){
       setBlocking(true);
     }else{
@@ -862,6 +864,47 @@ namespace Mist {
         Util::sleep(nxt.time - (((Util::getMS() - firstTime)*1000)+minSkipAhead)/realTime);
       }
     }
+    //delay the stream until its current keyframe is complete
+    if (completeKeysOnly){
+      bool completeKeyReady = false;
+      int timeoutTries = 40;//attempts to updateMeta before timeOut and moving on; default is approximately 10 seconds
+      for (std::map<unsigned int, DTSC::Track>::iterator it = myMeta.tracks.begin(); it != myMeta.tracks.end(); it++){
+        if (it->second.keys.size() >1){
+          int thisTimeoutTries = ((it->second.lastms - it->second.firstms) / (it->second.keys.size()-1)) / 125;
+          if (thisTimeoutTries > timeoutTries) timeoutTries = thisTimeoutTries;
+        }
+      }
+      while(!completeKeyReady && timeoutTries>0){
+        completeKeyReady = true;
+        for (std::map<unsigned int, DTSC::Track>::iterator it = myMeta.tracks.begin(); it != myMeta.tracks.end(); it++){
+            if (!it->second.keys.size() || it->second.keys.rbegin()->getTime() + it->second.keys.rbegin()->getLength() <= nxt.time ){
+              completeKeyReady = false;
+              break;
+            }
+        }
+        if (!completeKeyReady){
+          if (completeKeyReadyTimeOut){
+            INSANE_MSG("Complete Key not ready and time-out is being skipped");
+            timeoutTries = 0;
+          }else{
+            INSANE_MSG("Timeout: %d",timeoutTries);
+            timeoutTries--;//we count down
+            stats();
+            Util::wait(250);
+            updateMeta();
+          }
+        }
+      }
+      if (timeoutTries<=0){
+        if (!completeKeyReadyTimeOut){
+          INFO_MSG("Wait for keyframe Timeout triggered! Ended to avoid endless loops");
+        }
+        completeKeyReadyTimeOut = true;
+      }else{
+        //untimeout handling
+        completeKeyReadyTimeOut = false;
+      }
+    }
     if (curPage[nxt.tid]){
       if (nxt.offset < curPage[nxt.tid].len){
         unsigned long long nextTime = getDTSCTime(curPage[nxt.tid].mapped, nxt.offset);
diff --git a/src/output/output.h b/src/output/output.h
index 5f546ddd..0cb71a74 100644
--- a/src/output/output.h
+++ b/src/output/output.h
@@ -92,6 +92,7 @@ namespace Mist {
       std::map<unsigned long, unsigned long> nxtKeyNum;///< Contains the number of the next key, for page seeking purposes.
       std::set<sortedPageInfo> buffer;///< A sorted list of next-to-be-loaded packets.
       bool sought;///<If a seek has been done, this is set to true. Used for seeking on prepareNext().
+      bool completeKeyReadyTimeOut;//a bool to see if there has been a keyframe TimeOut for complete keys in Live
     protected://these are to be messed with by child classes
       IPC::sharedClient statsPage;///< Shared memory used for statistics reporting.
       bool isBlocking;///< If true, indicates that myConn is blocking.
@@ -102,6 +103,7 @@ namespace Mist {
       unsigned int maxSkipAhead;///< Maximum ms that we will go ahead of the intended timestamps.
       unsigned int minSkipAhead;///< Minimum ms that we will go ahead of the intended timestamps.
       unsigned int realTime;///< Playback speed in ms of data per second. eg: 0 is infinite, 1000 real-time, 5000 is 0.2X speed, 500 = 2X speed.
+      bool completeKeysOnly;///< Bool if we send whole keys only, so the metadata is complete and the output knows in advance what will be sent.
 
       //Read/write status variables
       Socket::Connection & myConn;///< Connection to the client.
diff --git a/src/output/output_dash_mp4.cpp b/src/output/output_dash_mp4.cpp
index 1cbe6621..b2f92a8d 100644
--- a/src/output/output_dash_mp4.cpp
+++ b/src/output/output_dash_mp4.cpp
@@ -129,31 +129,7 @@ namespace Mist {
       ase.setSampleRate(myMeta.tracks[tid].rate);
       ase.setChannelCount(myMeta.tracks[tid].channels);
       ase.setSampleSize(myMeta.tracks[tid].size);
-      MP4::DAC3 dac3Box;
-      switch (myMeta.tracks[tid].rate){
-        case 48000:
-          dac3Box.setSampleRateCode(0);
-          break;
-        case 44100:
-          dac3Box.setSampleRateCode(1);
-          break;
-        case 32000:
-          dac3Box.setSampleRateCode(2);
-          break;
-        default:
-          dac3Box.setSampleRateCode(3);
-          break;
-      }
-      /// \todo the next settings are set to generic values, we might want to make these flexible
-      dac3Box.setBitStreamIdentification(8);//check the docs, this is a weird property
-      dac3Box.setBitStreamMode(0);//set to main, mixed audio
-      dac3Box.setAudioConfigMode(2);///\todo find out if ACMode should be different
-      if (myMeta.tracks[tid].channels > 4){
-        dac3Box.setLowFrequencyEffectsChannelOn(1);
-      }else{
-        dac3Box.setLowFrequencyEffectsChannelOn(0);
-      }
-      dac3Box.setFrameSizeCode(20);//should be OK, but test this.
+      MP4::DAC3 dac3Box(myMeta.tracks[tid].rate, myMeta.tracks[tid].channels);
       ase.setCodecBox(dac3Box);
     }
     
diff --git a/src/output/output_progressive_mp4.cpp b/src/output/output_progressive_mp4.cpp
index 54a39fea..d741686c 100644
--- a/src/output/output_progressive_mp4.cpp
+++ b/src/output/output_progressive_mp4.cpp
@@ -141,31 +141,7 @@ namespace Mist {
                   ase.setChannelCount(thisTrack.channels);
                   ase.setSampleSize(thisTrack.size);
                   if (myMeta.tracks[*it].codec == "AC3"){
-                    MP4::DAC3 dac3Box;
-                    switch (myMeta.tracks[*it].rate){
-                      case 48000:
-                        dac3Box.setSampleRateCode(0);
-                        break;
-                      case 44100:
-                        dac3Box.setSampleRateCode(1);
-                        break;
-                      case 32000:
-                        dac3Box.setSampleRateCode(2);
-                        break;
-                      default:
-                        dac3Box.setSampleRateCode(3);
-                        break;
-                    }
-                    /// \todo the next settings are set to generic values, we might want to make these flexible
-                    dac3Box.setBitStreamIdentification(8);//check the docs, this is a weird property
-                    dac3Box.setBitStreamMode(0);//set to main, mixed audio
-                    dac3Box.setAudioConfigMode(2);///\todo find out if ACMode should be different
-                    if (thisTrack.channels > 4){
-                      dac3Box.setLowFrequencyEffectsChannelOn(1);
-                    }else{
-                      dac3Box.setLowFrequencyEffectsChannelOn(0);
-                    }
-                    dac3Box.setFrameSizeCode(20);//should be OK, but test this.
+                    MP4::DAC3 dac3Box(thisTrack.rate, thisTrack.channels);
                     ase.setCodecBox(dac3Box);
                   }else{//other codecs use the ESDS box
                   MP4::ESDS esdsBox(thisTrack.init);