diff --git a/lib/h265.cpp b/lib/h265.cpp
index b987123b..0e57a589 100644
--- a/lib/h265.cpp
+++ b/lib/h265.cpp
@@ -3,6 +3,46 @@
 #include "defines.h"
 
 namespace h265 {
+  const char * typeToStr(uint8_t type){
+    switch (type){
+      case 0:
+      case 1: return "Trailing slice";
+      case 2:
+      case 3: return "TSA slice";
+      case 4:
+      case 5: return "STSA slice";
+      case 6:
+      case 7: return "Decodable leading slice";
+      case 8:
+      case 9: return "Skipped leading slice";
+      case 16:
+      case 17:
+      case 18: return "BLA slice";
+      case 19:
+      case 20: return "IDR (keyframe) slice";
+      case 21: return "CRA slice";
+      case 32: return "VPS";
+      case 33: return "SPS";
+      case 34: return "PPS";
+      case 35: return "Access unit delimiter";
+      case 36: return "End of sequence";
+      case 37: return "End of bitstream";
+      case 38: return "Filler data";
+      case 39:
+      case 40: return "SEI";
+      case 48: return "RTP Aggregation Packet";
+      case 49: return "RTP Fragmentation Unit";
+      case 50: return "RTP PAyload Content Information (PACI)";
+      default: return "UNKNOWN";
+    }
+  }
+
+  bool isKeyframe(const char * data, uint32_t len){
+    if (!len){return false;}
+    uint8_t nalType = (data[0] & 0x7E) >> 1;
+    return (nalType >= 16 && nalType <= 21);
+  }
+
   std::deque<nalu::nalData> analysePackets(const char * data, unsigned long len){
     std::deque<nalu::nalData> res;
 
@@ -19,6 +59,36 @@ namespace h265 {
 
   initData::initData() {}
 
+  initData::initData(const std::string& hvccData) {
+    MP4::HVCC hvccBox;
+    hvccBox.setPayload(hvccData);
+    std::deque<MP4::HVCCArrayEntry> arrays = hvccBox.getArrays();
+    for (std::deque<MP4::HVCCArrayEntry>::iterator it = arrays.begin(); it != arrays.end(); it++){
+      for (std::deque<std::string>::iterator nalIt = it->nalUnits.begin(); nalIt != it->nalUnits.end(); nalIt++){
+        nalUnits[it->nalUnitType].insert(*nalIt);
+      }
+    }
+  }
+
+  const std::set<std::string> & initData::getVPS() const{
+    static std::set<std::string> empty;
+    if (!nalUnits.count(32)){return empty;}
+    return nalUnits.at(32);
+  }
+
+  const std::set<std::string> & initData::getSPS() const{
+    static std::set<std::string> empty;
+    if (!nalUnits.count(33)){return empty;}
+    return nalUnits.at(33);
+  }
+
+  const std::set<std::string> & initData::getPPS() const{
+    static std::set<std::string> empty;
+    if (!nalUnits.count(34)){return empty;}
+    return nalUnits.at(34);
+  }
+
+
   void initData::addUnit(char * data) {
     unsigned long nalSize = Bit::btohl(data);
     unsigned long nalType = (data[4] & 0x7E) >> 1;
@@ -30,6 +100,22 @@ namespace h265 {
     }
   }
 
+  void initData::addUnit(const std::string & data) {
+    if (data.size() <= 1){return;}
+    unsigned long nalType = (data[0] & 0x7E) >> 1;
+    switch (nalType) {
+      case 32: //vps
+      case 33: //sps
+      case 34: //pps
+        nalUnits[nalType].insert(data);
+    }
+    INFO_MSG("added nal of type %u" , nalType);
+    if (nalType == 32){
+      vpsUnit vps(data);
+      std::cout << vps.toPrettyString(0);
+    }
+  }
+
   bool initData::haveRequired() {
     return (nalUnits.count(32) && nalUnits.count(33) && nalUnits.count(34));
   }
@@ -72,6 +158,94 @@ namespace h265 {
     return std::string(hvccBox.payload(), hvccBox.payloadSize());
   }
 
+  metaInfo initData::getMeta() {
+    metaInfo res;
+    if (!nalUnits.count(33)){
+      return res;
+    }
+    spsUnit sps(*nalUnits[33].begin());
+    sps.getMeta(res);
+    return res;
+  }
+
+  void skipProfileTierLevel(Utils::bitstream & bs, unsigned int maxSubLayersMinus1){
+    bs.skip(8);
+    bs.skip(32);//general_profile_flags
+    bs.skip(4);
+    bs.skip(44);//reserverd_zero
+    bs.skip(8);
+    std::deque<bool> profilePresent;
+    std::deque<bool> levelPresent;
+    for (size_t i = 0; i < maxSubLayersMinus1; i++){
+      profilePresent.push_back(bs.get(1));
+      levelPresent.push_back(bs.get(1));
+    }
+    if (maxSubLayersMinus1){
+      for (int i = maxSubLayersMinus1; i < 8; i++){
+        bs.skip(2);
+      }
+    }
+    for (int i = 0; i < maxSubLayersMinus1; i++){
+      if (profilePresent[i]){
+        bs.skip(8);
+        bs.skip(32);//sub_layer_profile_flags
+        bs.skip(4);
+        bs.skip(44);//reserved_zero
+      }
+      if (levelPresent[i]){
+        bs.skip(8);
+      }
+    }
+  }
+
+  std::string printProfileTierLevel(Utils::bitstream & bs, unsigned int maxSubLayersMinus1, size_t indent){
+    std::stringstream r;
+    r << std::string(indent, ' ') << "general_profile_space: " << bs.get(2) << std::endl;
+    r << std::string(indent, ' ') << "general_tier_flag: " << bs.get(1) << std::endl;
+    r << std::string(indent, ' ') << "general_profile_idc: " << bs.get(5) << std::endl;
+    r << std::string(indent, ' ') << "general_profile_compatibility_flags: 0x" << std::hex << bs.get(32) << std::dec << std::endl;
+    r << std::string(indent, ' ') << "general_progressive_source_flag: " << bs.get(1) << std::endl;
+    r << std::string(indent, ' ') << "general_interlaced_source_flag: " << bs.get(1) << std::endl;
+    r << std::string(indent, ' ') << "general_non_packed_constraint_flag: " << bs.get(1) << std::endl;
+    r << std::string(indent, ' ') << "general_frame_only_constraint_flag: " << bs.get(1) << std::endl;
+    r << std::string(indent, ' ') << "general_reserved_zero_44bits: " << bs.get(44) << std::endl;
+    r << std::string(indent, ' ') << "general_level_idc: " << bs.get(8) << std::endl;
+    std::deque<bool> profilePresent;
+    std::deque<bool> levelPresent;
+    for (size_t i = 0; i < maxSubLayersMinus1; i++){
+      bool profile = bs.get(1);
+      bool level = bs.get(1);
+      profilePresent.push_back(profile);
+      levelPresent.push_back(level);
+      r << std::string(indent + 1, ' ') << "sub_layer_profile_present_flag[" << i << "]: " << (profile ? 1 : 0) << std::endl;
+      r << std::string(indent + 1, ' ') << "sub_layer_level_present_flag[" << i << "]: " << (level ? 1 : 0) << std::endl;
+    }
+
+    if (maxSubLayersMinus1){
+      for (int i = maxSubLayersMinus1; i < 8; i++){
+        r << std::string(indent + 1, ' ') << "reserver_zero_2_bits[" << i << "]: " << bs.get(2) << std::endl;
+      }
+    }
+    for (int i = 0; i < maxSubLayersMinus1; i++){
+      r << std::string(indent + 1, ' ') << "sub_layer[" << i << "]:" << std::endl;
+      if (profilePresent[i]){
+        r << std::string(indent + 2, ' ') << "sub_layer_profile_space: " << bs.get(2) << std::endl;
+        r << std::string(indent + 2, ' ') << "sub_layer_tier_flag: " << bs.get(1) << std::endl;
+        r << std::string(indent + 2, ' ') << "sub_layer_profile_idc: " << bs.get(5) << std::endl;
+        r << std::string(indent + 2, ' ') << "sub_layer_profile_compatibility_flags: " << std::hex << bs.get(32) << std::dec << std::endl;
+        r << std::string(indent + 2, ' ') << "sub_layer_progressive_source_flag: " << bs.get(1) << std::endl;
+        r << std::string(indent + 2, ' ') << "sub_layer_interlaced_source_flag: " << bs.get(1) << std::endl;
+        r << std::string(indent + 2, ' ') << "sub_layer_non_packed_constraint_flag: " << bs.get(1) << std::endl;
+        r << std::string(indent + 2, ' ') << "sub_layer_frame_only_constraint_flag: " << bs.get(1) << std::endl;
+        r << std::string(indent + 2, ' ') << "sub_layer_reserved_zero_44bits: " << bs.get(44) << std::endl;
+      }
+      if (levelPresent[i]){
+        r << std::string(indent + 2, ' ') << "sub_layer_level_idc: " << bs.get(8) << std::endl;
+      }
+    }
+    return r.str();
+  }
+
   void updateProfileTierLevel(Utils::bitstream & bs, MP4::HVCC & hvccBox, unsigned int maxSubLayersMinus1){
     hvccBox.setGeneralProfileSpace(bs.get(2));
 
@@ -135,10 +309,339 @@ namespace h265 {
     updateProfileTierLevel(bs, hvccBox, maxSubLayers - 1);
   }
 
+  std::string vpsUnit::toPrettyString(size_t indent){
+    Utils::bitstream bs;
+    bs.append(data);
+    bs.skip(16);//Nal Header
+    std::stringstream r;
+    r << std::string(indent, ' ') << "vps_video_parameter_set_id: " << bs.get(4) << std::endl;
+    r << std::string(indent, ' ') << "vps_reserved_three_2bits: " << bs.get(2) << std::endl;
+    r << std::string(indent, ' ') << "vps_max_layers_minus1: " << bs.get(6) << std::endl;
+    unsigned int maxSubLayersMinus1 = bs.get(3);
+    r << std::string(indent, ' ') << "vps_max_sub_layers_minus1: " << maxSubLayersMinus1 << std::endl;
+    r << std::string(indent, ' ') << "vps_temporal_id_nesting_flag: " << bs.get(1) << std::endl;
+    r << std::string(indent, ' ') << "vps_reserved_0xffff_16bits: " << std::hex << bs.get(16) << std::dec << std::endl;
+    r << std::string(indent, ' ') << "profile_tier_level(): " << std::endl << printProfileTierLevel(bs, maxSubLayersMinus1, indent + 1);
+    bool sub_layer_ordering_info = bs.get(1);
+    r << std::string(indent, ' ') << "vps_sub_layer_ordering_info_present_flag: " << sub_layer_ordering_info << std::endl;
+    for (int i = (sub_layer_ordering_info ? 0 : maxSubLayersMinus1); i <= maxSubLayersMinus1; i++){
+      r << std::string(indent, ' ') << "vps_max_dec_pic_buffering_minus1[" << i << "]: " << bs.getUExpGolomb() << std::endl;
+      r << std::string(indent, ' ') << "vps_max_num_reorder_pics[" << i << "]: " << bs.getUExpGolomb() << std::endl;
+      r << std::string(indent, ' ') << "vps_max_latency_increase_plus1[" << i << "]: " << bs.getUExpGolomb() << std::endl;
+    }
+    unsigned int vps_max_layer_id = bs.get(6);
+    uint64_t vps_num_layer_sets_minus1 = bs.getUExpGolomb();
+    r << std::string(indent, ' ') << "vps_max_layer_id: " << vps_max_layer_id << std::endl;
+    r << std::string(indent, ' ') << "vps_num_layer_sets_minus1: " << vps_num_layer_sets_minus1 << std::endl;
+    for (int i = 1; i <= vps_num_layer_sets_minus1; i++){
+      for (int j = 0; j < vps_max_layer_id; j++){
+        r << std::string(indent, ' ') << "layer_id_included_flag[" << i << "][" << j << "]: " << bs.get(1) << std::endl;
+      }
+    }
+    bool vps_timing_info = bs.get(1);
+    r << std::string(indent, ' ') << "vps_timing_info_present_flag: " << (vps_timing_info ? 1 : 0) << std::endl;
+
+    return r.str();
+  }
+
   spsUnit::spsUnit(const std::string & _data){
     data = nalu::removeEmulationPrevention(_data);
   }
 
+  void skipShortTermRefPicSet(Utils::bitstream & bs, unsigned int idx, size_t count){
+    static std::map<int,int> negativePics;
+    static std::map<int,int> positivePics;
+    if (idx == 0){
+      negativePics.clear();
+      positivePics.clear();
+    }
+    bool interPrediction = false;
+    if (idx != 0){
+      interPrediction = bs.get(1);
+    }
+    if (interPrediction){
+      uint64_t deltaIdxMinus1 = 0;
+      if (idx == count){
+        deltaIdxMinus1 = bs.getUExpGolomb();
+      }
+      bs.skip(1);
+      bs.getUExpGolomb();
+      uint64_t refRpsIdx = idx - deltaIdxMinus1 - 1;
+      uint64_t deltaPocs = negativePics[refRpsIdx] + positivePics[refRpsIdx];
+      for (int j = 0; j < deltaPocs; j++){
+        bool usedByCurrPicFlag = bs.get(1);
+        if (!usedByCurrPicFlag){
+          bs.skip(1);
+        }
+      }
+    }else{
+      negativePics[idx]  = bs.getUExpGolomb();
+      positivePics[idx] = bs.getUExpGolomb();
+      for (int i = 0; i < negativePics[idx]; i++){
+        bs.getUExpGolomb();
+        bs.skip(1);
+      }
+      for (int i = 0; i < positivePics[idx]; i++){
+        bs.getUExpGolomb();
+        bs.skip(1);
+      }
+    }
+  }
+
+  std::string printShortTermRefPicSet(Utils::bitstream & bs, unsigned int idx, size_t indent){
+    std::stringstream r;
+    bool interPrediction = false;
+    if (idx != 0){
+      interPrediction = bs.get(1);
+      r << std::string(indent, ' ') << "inter_ref_pic_set_predicition_flag: " << (interPrediction ? 1 : 0) << std::endl;
+    }
+    if (interPrediction){
+      WARN_MSG("interprediciton not yet handled");
+    }else{
+      uint64_t negativePics = bs.getUExpGolomb();
+      uint64_t positivePics = bs.getUExpGolomb();
+      r << std::string(indent, ' ') << "num_negative_pics: " << negativePics << std::endl;
+      r << std::string(indent, ' ') << "num_positive_pics: " << positivePics << std::endl;
+      for (int i = 0; i < negativePics; i++){
+        r << std::string(indent + 1, ' ') << "delta_poc_s0_minus1[" << i << "]: " << bs.getUExpGolomb() << std::endl;
+        r << std::string(indent + 1, ' ') << "used_by_curr_pic_s0_flag[" << i << "]: " << bs.get(1) << std::endl;
+      }
+      for (int i = 0; i < positivePics; i++){
+        r << std::string(indent + 1, ' ') << "delta_poc_s1_minus1[" << i << "]: " << bs.getUExpGolomb() << std::endl;
+        r << std::string(indent + 1, ' ') << "used_by_curr_pic_s1_flag[" << i << "]: " << bs.get(1) << std::endl;
+      }
+    }
+    return r.str();
+  }
+
+  void parseVuiParameters(Utils::bitstream & bs, metaInfo & res){
+    bool aspectRatio = bs.get(1);
+    if (aspectRatio){
+      uint16_t aspectRatioIdc = bs.get(8);
+      if (aspectRatioIdc == 255){
+        bs.skip(32);
+      }
+    }
+    bool overscanInfo = bs.get(1);
+    if (overscanInfo){
+      bs.skip(1);
+    }
+    bool videoSignalTypePresent = bs.get(1);
+    if (videoSignalTypePresent){
+      bs.skip(4);
+      bool colourDescription = bs.get(1);
+      if (colourDescription){
+        bs.skip(24);
+      }
+    }
+    bool chromaLocPresent = bs.get(1);
+    if (chromaLocPresent){
+      bs.getUExpGolomb();
+      bs.getUExpGolomb();
+    }
+    bs.skip(3);
+    bool defaultDisplay = bs.get(1);
+    if (defaultDisplay){
+      bs.getUExpGolomb();
+      bs.getUExpGolomb();
+      bs.getUExpGolomb();
+      bs.getUExpGolomb();
+    }
+    bool timingFlag = bs.get(1);
+    if (timingFlag){
+      uint32_t unitsInTick = bs.get(32);
+      uint32_t timescale = bs.get(32);
+      res.fps = (double)timescale / unitsInTick;
+    }
+  }
+
+  std::string printVuiParameters(Utils::bitstream & bs, size_t indent){
+    std::stringstream r;
+    bool aspectRatio = bs.get(1);
+    r << std::string(indent, ' ') << "aspect_ratio_info_present_flag: " << (aspectRatio ? 1 : 0) << std::endl;
+    if (aspectRatio){
+      uint16_t aspectRatioIdc = bs.get(8);
+      r << std::string(indent, ' ') << "aspect_ratio_idc: " << aspectRatioIdc << std::endl;
+      if (aspectRatioIdc == 255){
+        r << std::string(indent, ' ') << "sar_width: " << bs.get(16) << std::endl; 
+        r << std::string(indent, ' ') << "sar_height: " << bs.get(16) << std::endl; 
+      }
+    }
+    return r.str();
+  }
+
+  void skipScalingList(Utils::bitstream & bs){
+    for (int sizeId = 0; sizeId < 4; sizeId++){
+      for (int matrixId = 0; matrixId < (sizeId == 3 ? 2 : 6); matrixId++){
+        bool modeFlag = bs.get(1);
+        if (!modeFlag){
+          bs.getUExpGolomb();
+        }else{
+          size_t coefNum = std::min(64, (1 << (4 + (sizeId << 1))));
+          if (sizeId > 1){
+            bs.getExpGolomb();
+          }
+          for (int i = 0; i < coefNum; i++){
+            bs.getExpGolomb();
+          }
+        }
+      }
+    }
+  }
+
+  void spsUnit::getMeta(metaInfo & res) {
+    Utils::bitstream bs;
+    bs.append(data);
+    bs.skip(16);//Nal Header
+    bs.skip(4);
+    unsigned int maxSubLayersMinus1 = bs.get(3);
+    bs.skip(1);
+    skipProfileTierLevel(bs, maxSubLayersMinus1);
+    bs.getUExpGolomb();
+    uint64_t chromaFormatIdc = bs.getUExpGolomb();
+    bool separateColorPlane = false;
+    if (chromaFormatIdc == 3){
+      separateColorPlane = bs.get(1);
+    }
+    res.width = bs.getUExpGolomb();
+    res.height = bs.getUExpGolomb();
+    bool conformanceWindow = bs.get(1);
+    if (conformanceWindow){
+      uint8_t subWidthC = ((chromaFormatIdc == 1 || chromaFormatIdc == 2) ? 2 : 1);
+      uint8_t subHeightC = (chromaFormatIdc == 1 ? 2 : 1);
+      uint64_t left = bs.getUExpGolomb();
+      uint64_t right = bs.getUExpGolomb();
+      uint64_t top = bs.getUExpGolomb();
+      uint64_t bottom = bs.getUExpGolomb();
+      res.width -= (subWidthC * right); 
+      res.height -= (subHeightC * bottom);
+    }
+    bs.getUExpGolomb();
+    bs.getUExpGolomb();
+    uint64_t log2MaxPicOrderCntLsbMinus4 = bs.getUExpGolomb();
+    bool subLayerOrdering = bs.get(1);
+    for (int i= (subLayerOrdering ? 0 : maxSubLayersMinus1); i <= maxSubLayersMinus1; i++){
+      bs.getUExpGolomb();
+      bs.getUExpGolomb();
+      bs.getUExpGolomb();
+    }
+    bs.getUExpGolomb();
+    bs.getUExpGolomb();
+    bs.getUExpGolomb();
+    bs.getUExpGolomb();
+    bs.getUExpGolomb();
+    bs.getUExpGolomb();
+    bool scalingListEnabled = bs.get(1);
+    if (scalingListEnabled){
+      bool scalingListPresent = bs.get(1);
+      if (scalingListPresent){
+        skipScalingList(bs);
+      }
+    }
+    bs.skip(2);
+    bool pcmEnabled = bs.get(1);
+    if (pcmEnabled){
+      bs.skip(8);
+      bs.getUExpGolomb();
+      bs.getUExpGolomb();
+      bs.skip(1);
+    }
+    uint64_t shortTermPicSets = bs.getUExpGolomb();
+    for (int i= 0; i < shortTermPicSets; i++){
+      skipShortTermRefPicSet(bs, i, shortTermPicSets);
+    }
+    bool longTermRefPics = bs.get(1);
+    if (longTermRefPics){
+      uint64_t numLongTermPics = bs.getUExpGolomb();
+      for (int i = 0; i < numLongTermPics; i++){
+        bs.skip(log2MaxPicOrderCntLsbMinus4 + 4);
+        bs.skip(1);
+      }
+    }
+    bs.skip(2);
+    bool vuiParams = bs.get(1);
+    if (vuiParams){
+      parseVuiParameters(bs, res);
+    }
+  }
+
+  std::string spsUnit::toPrettyString(size_t indent){
+    Utils::bitstream bs;
+    bs.append(data);
+    bs.skip(16);//Nal Header
+    std::stringstream r;
+    r << std::string(indent, ' ') << "sps_video_parameter_set_id: " << bs.get(4) << std::endl;
+    unsigned int maxSubLayersMinus1 = bs.get(3);
+    r << std::string(indent, ' ') << "sps_max_sub_layers_minus1: " << maxSubLayersMinus1 << std::endl;
+    r << std::string(indent, ' ') << "sps_temporal_id_nesting_flag: " << bs.get(1) << std::endl;
+    r << std::string(indent, ' ') << "profile_tier_level(): " << std::endl << printProfileTierLevel(bs, maxSubLayersMinus1, indent + 1);
+    r << std::string(indent, ' ') << "sps_seq_parameter_set_id: " << bs.getUExpGolomb() << std::endl;
+    uint64_t chromaFormatIdc = bs.getUExpGolomb();
+    r << std::string(indent, ' ') << "chroma_format_idc: " << chromaFormatIdc << std::endl;
+    if (chromaFormatIdc == 3){
+      r << std::string(indent, ' ') << "separate_colour_plane_flag: " << bs.get(1) << std::endl;
+    }
+    r << std::string(indent, ' ') << "pic_width_in_luma_samples: " << bs.getUExpGolomb() << std::endl;
+    r << std::string(indent, ' ') << "pic_height_in_luma_samples: " << bs.getUExpGolomb() << std::endl;
+    bool conformance_window_flag = bs.get(1);
+    r << std::string(indent, ' ') << "conformance_window_flag: " << conformance_window_flag << std::endl;
+    if (conformance_window_flag){
+      r << std::string(indent, ' ') << "conf_window_left_offset: " << bs.getUExpGolomb() << std::endl;
+      r << std::string(indent, ' ') << "conf_window_right_offset: " << bs.getUExpGolomb() << std::endl;
+      r << std::string(indent, ' ') << "conf_window_top_offset: " << bs.getUExpGolomb() << std::endl;
+      r << std::string(indent, ' ') << "conf_window_bottom_offset: " << bs.getUExpGolomb() << std::endl;
+    }
+    r << std::string(indent, ' ') << "bit_depth_luma_minus8: " << bs.getUExpGolomb() << std::endl;
+    r << std::string(indent, ' ') << "bit_depth_chroma_minus8: " << bs.getUExpGolomb() << std::endl;
+    r << std::string(indent, ' ') << "log2_max_pic_order_cnt_lsb_minus4: " << bs.getUExpGolomb() << std::endl;
+    bool subLayerOrdering = bs.get(1);
+    r << std::string(indent, ' ') << "sps_sub_layer_ordering_info_present_flag: " << subLayerOrdering  << std::endl;
+    for (int i= (subLayerOrdering ? 0 : maxSubLayersMinus1); i <= maxSubLayersMinus1; i++){
+      r << std::string(indent + 1, ' ') << "sps_max_dec_pic_buffering_minus1[" << i << "]: " << bs.getUExpGolomb()  << std::endl;
+      r << std::string(indent + 1, ' ') << "sps_max_num_reorder_pics[" << i << "]: " << bs.getUExpGolomb()  << std::endl;
+      r << std::string(indent + 1, ' ') << "sps_max_latency_increase_plus1[" << i << "]: " << bs.getUExpGolomb()  << std::endl;
+    }
+    r << std::string(indent, ' ') << "log2_min_luma_coding_block_size_minus3: " << bs.getUExpGolomb()  << std::endl;
+    r << std::string(indent, ' ') << "log2_diff_max_min_luma_coding_block_size: " << bs.getUExpGolomb()  << std::endl;
+    r << std::string(indent, ' ') << "log2_min_transform_block_size_minus2: " << bs.getUExpGolomb()  << std::endl;
+    r << std::string(indent, ' ') << "log2_diff_max_min_transform_block_size: " << bs.getUExpGolomb()  << std::endl;
+    r << std::string(indent, ' ') << "max_transform_hierarchy_depth_inter: " << bs.getUExpGolomb()  << std::endl;
+    r << std::string(indent, ' ') << "max_transform_hierarchy_depth_intra: " << bs.getUExpGolomb()  << std::endl;
+    bool scalingListEnabled = bs.get(1);
+    r << std::string(indent, ' ') << "scaling_list_enabled_flag: " << scalingListEnabled << std::endl;
+    if (scalingListEnabled){
+      WARN_MSG("Not implemented scaling list in HEVC sps");
+    }
+    r << std::string(indent, ' ') << "amp_enabled_flag: " << bs.get(1) << std::endl;
+    r << std::string(indent, ' ') << "sample_adaptive_offset_enabled_flag: " << bs.get(1) << std::endl;
+    bool pcmEnabled = bs.get(1);
+    r << std::string(indent, ' ') << "pcm_enabled_flag: " << pcmEnabled << std::endl;
+    if (pcmEnabled){
+      WARN_MSG("Not implemented pcm_enabled in HEVC sps");
+    }
+    uint64_t shortTermPicSets = bs.getUExpGolomb();
+    r << std::string(indent, ' ') << "num_short_term_ref_pic_sets: " << shortTermPicSets << std::endl;
+    for (int i= 0; i < shortTermPicSets; i++){
+      r << std::string(indent, ' ') << "short_term_ref_pic_set(" << i << "):" << std::endl << printShortTermRefPicSet(bs, i, indent + 1);
+
+    }
+    bool longTermRefPics = bs.get(1);
+    r << std::string(indent, ' ') << "long_term_ref_pics_present_flag: " << (longTermRefPics ? 1 : 0) << std::endl;
+    if (longTermRefPics){
+      WARN_MSG("Implement longTermRefPics");
+    }
+    r << std::string(indent, ' ') << "sps_temporal_mvp_enabled_flag: " << bs.get(1) << std::endl;
+    r << std::string(indent, ' ') << "strong_intra_smoothing_enabled_flag: " << bs.get(1) << std::endl;
+    
+    bool vuiParams = bs.get(1);
+    r << std::string(indent, ' ') << "vui_parameters_present_flag: " << (vuiParams ? 1 : 0) << std::endl;
+    if (vuiParams){
+      r << std::string(indent, ' ') << "vui_parameters:" << std::endl << printVuiParameters(bs, indent + 1);
+
+    }
+    return r.str();
+  }
+
   void spsUnit::updateHVCC(MP4::HVCC & hvccBox) {
     Utils::bitstream bs;
     bs.append(data);
diff --git a/lib/h265.h b/lib/h265.h
index bec6d8d5..bda1cc3e 100644
--- a/lib/h265.h
+++ b/lib/h265.h
@@ -9,15 +9,31 @@
 
 namespace h265 {
   std::deque<nalu::nalData> analysePackets(const char * data, unsigned long len);
+  
+  const char * typeToStr(uint8_t type);
+  bool isKeyframe(const char * data, uint32_t len);
 
   void updateProfileTierLevel(Utils::bitstream & bs, MP4::HVCC & hvccBox, unsigned long maxSubLayersMinus1);
+  std::string printProfileTierLevel(Utils::bitstream & bs, unsigned long maxSubLayersMinus1, size_t indent);
+
+  struct metaInfo {
+    unsigned int width;
+    unsigned int height;
+    double fps;
+  };
 
   class initData {
     public:
       initData();
+      initData(const std::string & hvccData);
       void addUnit(char * data);
+      void addUnit(const std::string & data);
       bool haveRequired();
       std::string generateHVCC();
+      metaInfo getMeta();
+      const std::set<std::string> & getVPS() const;
+      const std::set<std::string> & getSPS() const;
+      const std::set<std::string> & getPPS() const;
     protected:
       std::map<unsigned int, std::set<std::string> > nalUnits;
   };
@@ -26,6 +42,7 @@ namespace h265 {
     public:
       vpsUnit(const std::string & _data);
       void updateHVCC(MP4::HVCC & hvccBox);
+      std::string toPrettyString(size_t indent);
     private:
       std::string data;
   };
@@ -34,6 +51,8 @@ namespace h265 {
     public:
       spsUnit(const std::string & _data);
       void updateHVCC(MP4::HVCC & hvccBox);
+      std::string toPrettyString(size_t indent = 0);
+      void getMeta(metaInfo & res);
     private:
       std::string data;
   };
diff --git a/lib/mp4_generic.cpp b/lib/mp4_generic.cpp
index 747d960f..fb5a682e 100644
--- a/lib/mp4_generic.cpp
+++ b/lib/mp4_generic.cpp
@@ -1,5 +1,6 @@
 #include "mp4_generic.h"
 #include "defines.h"
+#include "h265.h"
 
 namespace MP4 {
   MFHD::MFHD() {
@@ -866,7 +867,7 @@ namespace MP4 {
     r << std::string(indent + 1, ' ') << "Arrays:" << std::endl;
     std::deque<HVCCArrayEntry> arrays = getArrays();
     for (unsigned int i = 0; i < arrays.size(); i++){
-      r << std::string(indent + 2, ' ') << "Array with type " << (int)arrays[i].nalUnitType << std::endl;
+      r << std::string(indent + 2, ' ') << "Array with type " << h265::typeToStr(arrays[i].nalUnitType) << std::endl;
       for (unsigned int j = 0; j < arrays[i].nalUnits.size(); j++){
         r << std::string(indent + 3, ' ') << "Nal unit of " << arrays[i].nalUnits[j].size() << " bytes" << std::endl;
       }
@@ -874,6 +875,11 @@ namespace MP4 {
     return r.str();
   }
 
+  h265::metaInfo HVCC::getMetaInfo(){
+    h265::initData init(std::string(payload(), payloadSize()));
+    return init.getMeta();
+  }
+
   void HVCC::setPayload(std::string newPayload) {
     if (!reserve(0, payloadSize(), newPayload.size())) {
       ERROR_MSG("Cannot allocate enough memory for payload");
diff --git a/lib/mp4_generic.h b/lib/mp4_generic.h
index 959bb9b1..a8f2cc17 100644
--- a/lib/mp4_generic.h
+++ b/lib/mp4_generic.h
@@ -1,6 +1,10 @@
 #pragma once
 #include "mp4.h"
 
+namespace h265 {
+  class metaInfo;
+}
+
 namespace MP4 {
   class MFHD: public Box {
     public:
@@ -174,6 +178,7 @@ namespace MP4 {
       std::string asAnnexB();
       void setPayload(std::string newPayload);
       std::string toPrettyString(uint32_t indent = 0);
+      h265::metaInfo getMetaInfo();
   };
 
   class Descriptor{
diff --git a/lib/ts_stream.cpp b/lib/ts_stream.cpp
index 2a59b4c1..bc729941 100644
--- a/lib/ts_stream.cpp
+++ b/lib/ts_stream.cpp
@@ -192,7 +192,8 @@ namespace TS{
             metaInit[pid] = std::string(entry.getESInfo(), entry.getESInfoLength());
           }
           break;
-        default: break;
+        default:
+          break;
         }
         entry.advance();
       }
@@ -660,9 +661,12 @@ namespace TS{
     char typeNal;
 
     isKeyFrame = false;
-    typeNal = pesPayload[0] & 0x1F;
+    if (pidToCodec[tid] == MPEG2){
+      return;
+    }
 
     if (pidToCodec[tid] == H264){
+      typeNal = pesPayload[0] & 0x1F;
       switch (typeNal){
       case 0x01:{
         if (firstSlice){
@@ -702,6 +706,7 @@ namespace TS{
       default: break;
       }
     }else if (pidToCodec[tid] == H265){
+      typeNal = (((pesPayload[0] & 0x7E) >> 1) & 0xFF);
       switch (typeNal){
       case 2:
       case 3: // TSA Picture
@@ -723,7 +728,8 @@ namespace TS{
       case 32:
       case 33:
       case 34:{
-        hevcInfo[tid].addUnit((char *)pesPayload); // may i convert to (char *)?
+        tthread::lock_guard<tthread::recursive_mutex> guard(tMutex);
+        hevcInfo[tid].addUnit(std::string(pesPayload, nextPtr - pesPayload)); // may i convert to (char *)?
         break;
       }
       default: break;