diff --git a/packager/media/filters/avc_decoder_configuration.cc b/packager/media/filters/avc_decoder_configuration.cc
index d9a513a784..175a05606a 100644
--- a/packager/media/filters/avc_decoder_configuration.cc
+++ b/packager/media/filters/avc_decoder_configuration.cc
@@ -19,20 +19,25 @@ AVCDecoderConfiguration::AVCDecoderConfiguration()
     : version_(0),
       profile_indication_(0),
       profile_compatibility_(0),
-      avc_level_(0),
-      length_size_(0) {}
+      avc_level_(0) {}
 
 AVCDecoderConfiguration::~AVCDecoderConfiguration() {}
 
-bool AVCDecoderConfiguration::Parse(const std::vector<uint8_t>& data) {
-  BufferReader reader(data.data(), data.size());
+bool AVCDecoderConfiguration::ParseInternal() {
+  // See ISO 14496-15 sec 5.3.3.1.2
+  BufferReader reader(data(), data_size());
+
   RCHECK(reader.Read1(&version_) && version_ == 1 &&
          reader.Read1(&profile_indication_) &&
          reader.Read1(&profile_compatibility_) && reader.Read1(&avc_level_));
 
   uint8_t length_size_minus_one;
   RCHECK(reader.Read1(&length_size_minus_one));
-  length_size_ = (length_size_minus_one & 0x3) + 1;
+  if ((length_size_minus_one & 0x3) == 2) {
+    LOG(ERROR) << "Invalid NALU length size.";
+    return false;
+  }
+  set_nalu_length_size((length_size_minus_one & 0x3) + 1);
 
   uint8_t num_sps;
   RCHECK(reader.Read1(&num_sps));
@@ -42,20 +47,45 @@ bool AVCDecoderConfiguration::Parse(const std::vector<uint8_t>& data) {
     return false;
   }
 
-  uint16_t sps_length = 0;
-  RCHECK(reader.Read2(&sps_length));
+  for (uint8_t i = 0; i < num_sps; i++) {
+    uint16_t size = 0;
+    RCHECK(reader.Read2(&size));
+    const uint8_t* nalu_data = reader.data() + reader.pos();
+    RCHECK(reader.SkipBytes(size));
 
-  H264Parser parser;
-  int sps_id = 0;
-  Nalu nalu;
-  RCHECK(nalu.InitializeFromH264(reader.data() + reader.pos(), sps_length));
-  RCHECK(parser.ParseSPS(nalu, &sps_id) == H264Parser::kOk);
-  return ExtractResolutionFromSps(*parser.GetSPS(sps_id), &coded_width_,
-                                  &coded_height_, &pixel_width_,
-                                  &pixel_height_);
-  // It is unlikely to have more than one SPS in practice. Also there's
-  // no way to change the {coded,pixel}_{width,height} dynamically from
-  // VideoStreamInfo. So skip the rest (if there are any).
+    Nalu nalu;
+    RCHECK(nalu.InitializeFromH264(nalu_data, size));
+    RCHECK(nalu.type() == Nalu::H264_SPS);
+    AddNalu(nalu);
+
+    if (i == 0) {
+      // It is unlikely to have more than one SPS in practice. Also there's
+      // no way to change the {coded,pixel}_{width,height} dynamically from
+      // VideoStreamInfo.
+      int sps_id = 0;
+      H264Parser parser;
+      RCHECK(parser.ParseSPS(nalu, &sps_id) == H264Parser::kOk);
+      RCHECK(ExtractResolutionFromSps(*parser.GetSPS(sps_id), &coded_width_,
+                                      &coded_height_, &pixel_width_,
+                                      &pixel_height_));
+    }
+  }
+
+  uint8_t pps_count;
+  RCHECK(reader.Read1(&pps_count));
+  for (uint8_t i = 0; i < pps_count; i++) {
+    uint16_t size = 0;
+    RCHECK(reader.Read2(&size));
+    const uint8_t* nalu_data = reader.data() + reader.pos();
+    RCHECK(reader.SkipBytes(size));
+
+    Nalu nalu;
+    RCHECK(nalu.InitializeFromH264(nalu_data, size));
+    RCHECK(nalu.type() == Nalu::H264_PPS);
+    AddNalu(nalu);
+  }
+
+  return true;
 }
 
 std::string AVCDecoderConfiguration::GetCodecString() const {
diff --git a/packager/media/filters/avc_decoder_configuration.h b/packager/media/filters/avc_decoder_configuration.h
index 116f62baac..7db36a2798 100644
--- a/packager/media/filters/avc_decoder_configuration.h
+++ b/packager/media/filters/avc_decoder_configuration.h
@@ -12,19 +12,16 @@
 #include <vector>
 
 #include "packager/base/macros.h"
+#include "packager/media/filters/decoder_configuration.h"
 
 namespace edash_packager {
 namespace media {
 
 /// Class for parsing AVC decoder configuration.
-class AVCDecoderConfiguration {
+class AVCDecoderConfiguration : public DecoderConfiguration {
  public:
   AVCDecoderConfiguration();
-  ~AVCDecoderConfiguration();
-
-  /// Parses input to extract AVC decoder configuration data.
-  /// @return false if there is parsing errors.
-  bool Parse(const std::vector<uint8_t>& data);
+  ~AVCDecoderConfiguration() override;
 
   /// @return The codec string.
   std::string GetCodecString() const;
@@ -33,7 +30,6 @@ class AVCDecoderConfiguration {
   uint8_t profile_indication() const { return profile_indication_; }
   uint8_t profile_compatibility() const { return profile_compatibility_; }
   uint8_t avc_level() const { return avc_level_; }
-  uint8_t length_size() const { return length_size_; }
   uint32_t coded_width() const { return coded_width_; }
   uint32_t coded_height() const { return coded_height_; }
   uint32_t pixel_width() const { return pixel_width_; }
@@ -46,11 +42,12 @@ class AVCDecoderConfiguration {
                                     uint8_t avc_level);
 
  private:
+  bool ParseInternal() override;
+
   uint8_t version_;
   uint8_t profile_indication_;
   uint8_t profile_compatibility_;
   uint8_t avc_level_;
-  uint8_t length_size_;
 
   // Extracted from SPS.
   uint32_t coded_width_;
diff --git a/packager/media/filters/avc_decoder_configuration_unittest.cc b/packager/media/filters/avc_decoder_configuration_unittest.cc
index 038037e981..6544ed6d7b 100644
--- a/packager/media/filters/avc_decoder_configuration_unittest.cc
+++ b/packager/media/filters/avc_decoder_configuration_unittest.cc
@@ -19,15 +19,14 @@ TEST(AVCDecoderConfigurationTest, Success) {
       0x96, 0x01, 0x00, 0x06, 0x68, 0xEB, 0xE3, 0xCB, 0x22, 0xC0};
 
   AVCDecoderConfiguration avc_config;
-  ASSERT_TRUE(avc_config.Parse(std::vector<uint8_t>(
-      kAvcDecoderConfigurationData,
-      kAvcDecoderConfigurationData + arraysize(kAvcDecoderConfigurationData))));
+  ASSERT_TRUE(avc_config.Parse(kAvcDecoderConfigurationData,
+                               arraysize(kAvcDecoderConfigurationData)));
 
   EXPECT_EQ(1u, avc_config.version());
   EXPECT_EQ(0x64, avc_config.profile_indication());
   EXPECT_EQ(0u, avc_config.profile_compatibility());
   EXPECT_EQ(0x1E, avc_config.avc_level());
-  EXPECT_EQ(4u, avc_config.length_size());
+  EXPECT_EQ(4u, avc_config.nalu_length_size());
   EXPECT_EQ(720u, avc_config.coded_width());
   EXPECT_EQ(360u, avc_config.coded_height());
   EXPECT_EQ(8u, avc_config.pixel_width());
@@ -36,13 +35,24 @@ TEST(AVCDecoderConfigurationTest, Success) {
   EXPECT_EQ("avc1.64001e", avc_config.GetCodecString());
 }
 
+TEST(AVCDecoderConfigurationTest, FailsOnInvalidNaluLengthSize) {
+  const uint8_t kAvcDecoderConfigurationData[] = {
+      0x01, 0x64, 0x00, 0x1E, 0xFE, 0xE1, 0x00, 0x1D, 0x67, 0x64, 0x00, 0x1E,
+      0xAC, 0xD9, 0x40, 0xB4, 0x2F, 0xF9, 0x7F, 0xF0, 0x00, 0x80, 0x00, 0x91,
+      0x00, 0x00, 0x03, 0x03, 0xE9, 0x00, 0x00, 0xEA, 0x60, 0x0F, 0x16, 0x2D,
+      0x96, 0x01, 0x00, 0x06, 0x68, 0xEB, 0xE3, 0xCB, 0x22, 0xC0};
+
+  AVCDecoderConfiguration avc_config;
+  ASSERT_FALSE(avc_config.Parse(kAvcDecoderConfigurationData,
+                                arraysize(kAvcDecoderConfigurationData)));
+}
+
 TEST(AVCDecoderConfigurationTest, FailOnInsufficientData) {
   const uint8_t kAvcDecoderConfigurationData[] = {0x01, 0x64, 0x00, 0x1E};
 
   AVCDecoderConfiguration avc_config;
-  ASSERT_FALSE(avc_config.Parse(std::vector<uint8_t>(
-      kAvcDecoderConfigurationData,
-      kAvcDecoderConfigurationData + arraysize(kAvcDecoderConfigurationData))));
+  ASSERT_FALSE(avc_config.Parse(kAvcDecoderConfigurationData,
+                                arraysize(kAvcDecoderConfigurationData)));
 }
 
 TEST(AVCDecoderConfigurationTest, GetCodecString) {
diff --git a/packager/media/filters/decoder_configuration.cc b/packager/media/filters/decoder_configuration.cc
new file mode 100644
index 0000000000..70313239e8
--- /dev/null
+++ b/packager/media/filters/decoder_configuration.cc
@@ -0,0 +1,26 @@
+// Copyright 2016 Google Inc. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file or at
+// https://developers.google.com/open-source/licenses/bsd
+
+#include "packager/media/filters/decoder_configuration.h"
+
+namespace edash_packager {
+namespace media {
+
+DecoderConfiguration::DecoderConfiguration() : nalu_length_size_(0) {}
+DecoderConfiguration::~DecoderConfiguration() {}
+
+bool DecoderConfiguration::Parse(const uint8_t* data, size_t data_size) {
+  data_.assign(data, data + data_size);
+  nalu_.clear();
+  return ParseInternal();
+}
+
+void DecoderConfiguration::AddNalu(const Nalu& nalu) {
+  nalu_.push_back(nalu);
+}
+
+}  // namespace media
+}  // namespace edash_packager
diff --git a/packager/media/filters/decoder_configuration.h b/packager/media/filters/decoder_configuration.h
new file mode 100644
index 0000000000..cee45f5909
--- /dev/null
+++ b/packager/media/filters/decoder_configuration.h
@@ -0,0 +1,80 @@
+// Copyright 2016 Google Inc. All rights reserved.
+//
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file or at
+// https://developers.google.com/open-source/licenses/bsd
+
+#ifndef MEDIA_FILTERS_DECODER_CONFIGURATION_H_
+#define MEDIA_FILTERS_DECODER_CONFIGURATION_H_
+
+#include <vector>
+
+#include "packager/base/logging.h"
+#include "packager/base/macros.h"
+#include "packager/media/filters/nalu_reader.h"
+
+namespace edash_packager {
+namespace media {
+
+// Defines a base class for decoder configurations.
+class DecoderConfiguration {
+ public:
+  virtual ~DecoderConfiguration();
+
+  /// Parses input to extract decoder configuration data.  This will make and
+  /// store a copy of the data for Nalu access.
+  /// @return false if there are parsing errors.
+  bool Parse(const std::vector<uint8_t>& data) {
+    return Parse(data.data(), data.size());
+  }
+
+  /// Parses input to extract decoder configuration data.  This will make and
+  /// store a copy of the data for Nalu access.
+  /// @return false if there are parsing errors.
+  bool Parse(const uint8_t* data, size_t data_size);
+
+  /// @return The size of the NAL unit length field.
+  uint8_t nalu_length_size() const { return nalu_length_size_; }
+
+  /// @return The number of Nalu in the configuration.
+  size_t nalu_count() const { return nalu_.size(); }
+
+  /// @return The nalu at the given index.  The Nalu is only valid for the
+  ///         lifetime of this object, even if copied.
+  const Nalu& nalu(size_t i) const { return nalu_[i]; }
+
+ protected:
+  DecoderConfiguration();
+
+  /// Adds the given Nalu to the configuration.
+  void AddNalu(const Nalu& nalu);
+
+  /// @return a pointer to the copy of the data.
+  const uint8_t* data() const { return data_.data(); }
+
+  /// @return the size of the copy of the data.
+  size_t data_size() const { return data_.size(); }
+
+  /// Sets the size of the NAL unit length field.
+  void set_nalu_length_size(uint8_t nalu_length_size) {
+    DCHECK(nalu_length_size <= 2 || nalu_length_size == 4);
+    nalu_length_size_ = nalu_length_size;
+  }
+
+ private:
+  // Performs the actual parsing of the data.
+  virtual bool ParseInternal() = 0;
+
+  // Contains a copy of the data.  This manages the pointer lifetime so the
+  // extracted Nalu can accessed.
+  std::vector<uint8_t> data_;
+  std::vector<Nalu> nalu_;
+  uint8_t nalu_length_size_;
+
+  DISALLOW_COPY_AND_ASSIGN(DecoderConfiguration);
+};
+
+}  // namespace media
+}  // namespace edash_packager
+
+#endif  // MEDIA_FILTERS_DECODER_CONFIGURATION_H_
diff --git a/packager/media/filters/filters.gyp b/packager/media/filters/filters.gyp
index 75ca804dad..6ab721fe15 100644
--- a/packager/media/filters/filters.gyp
+++ b/packager/media/filters/filters.gyp
@@ -15,6 +15,8 @@
       'sources': [
         'avc_decoder_configuration.cc',
         'avc_decoder_configuration.h',
+        'decoder_configuration.cc',
+        'decoder_configuration.h',
         'ec3_audio_util.cc',
         'ec3_audio_util.h',
         'hevc_decoder_configuration.cc',
diff --git a/packager/media/filters/h264_byte_to_unit_stream_converter.cc b/packager/media/filters/h264_byte_to_unit_stream_converter.cc
index 34127faa86..7be8bb1688 100644
--- a/packager/media/filters/h264_byte_to_unit_stream_converter.cc
+++ b/packager/media/filters/h264_byte_to_unit_stream_converter.cc
@@ -35,7 +35,8 @@ bool H264ByteToUnitStreamConverter::ConvertByteStreamToNalUnitStream(
   BufferWriter output_buffer(input_frame_size + kStreamConversionOverhead);
 
   Nalu nalu;
-  NaluReader reader(kIsAnnexbByteStream, input_frame, input_frame_size);
+  NaluReader reader(NaluReader::kH264, kIsAnnexbByteStream, input_frame,
+                    input_frame_size);
   if (!reader.StartsWithStartCode()) {
     LOG(ERROR) << "H.264 byte stream frame did not begin with start code.";
     return false;
diff --git a/packager/media/filters/h264_parser_unittest.cc b/packager/media/filters/h264_parser_unittest.cc
index a6b864d328..d15313890a 100644
--- a/packager/media/filters/h264_parser_unittest.cc
+++ b/packager/media/filters/h264_parser_unittest.cc
@@ -18,7 +18,8 @@ TEST(H264ParserTest, StreamFileParsing) {
   int num_nalus = 759;
 
   H264Parser parser;
-  NaluReader reader(kIsAnnexbByteStream, buffer.data(), buffer.size());
+  NaluReader reader(NaluReader::kH264, kIsAnnexbByteStream, buffer.data(),
+                    buffer.size());
 
   // Parse until the end of stream/unsupported stream/error in stream is found.
   int num_parsed_nalus = 0;
diff --git a/packager/media/filters/hevc_decoder_configuration.cc b/packager/media/filters/hevc_decoder_configuration.cc
index 33d2c613c3..3a8624e229 100644
--- a/packager/media/filters/hevc_decoder_configuration.cc
+++ b/packager/media/filters/hevc_decoder_configuration.cc
@@ -79,13 +79,12 @@ HEVCDecoderConfiguration::HEVCDecoderConfiguration()
       general_tier_flag_(false),
       general_profile_idc_(0),
       general_profile_compatibility_flags_(0),
-      general_level_idc_(0),
-      length_size_(0) {}
+      general_level_idc_(0) {}
 
 HEVCDecoderConfiguration::~HEVCDecoderConfiguration() {}
 
-bool HEVCDecoderConfiguration::Parse(const std::vector<uint8_t>& data) {
-  BufferReader reader(data.data(), data.size());
+bool HEVCDecoderConfiguration::ParseInternal() {
+  BufferReader reader(data(), data_size());
 
   uint8_t profile_indication = 0;
   uint8_t length_size_minus_one = 0;
@@ -104,7 +103,30 @@ bool HEVCDecoderConfiguration::Parse(const std::vector<uint8_t>& data) {
   general_tier_flag_ = ((profile_indication >> 5) & 1) == 1;
   general_profile_idc_ = profile_indication & 0x1f;
 
-  length_size_ = (length_size_minus_one & 0x3) + 1;
+  if ((length_size_minus_one & 0x3) == 2) {
+    LOG(ERROR) << "Invalid NALU length size.";
+    return false;
+  }
+  set_nalu_length_size((length_size_minus_one & 0x3) + 1);
+
+  for (int i = 0; i < num_of_arrays; i++) {
+    uint8_t nal_unit_type;
+    uint16_t num_nalus;
+    RCHECK(reader.Read1(&nal_unit_type));
+    nal_unit_type &= 0x3f;
+    RCHECK(reader.Read2(&num_nalus));
+    for (int j = 0; j < num_nalus; j++) {
+      uint16_t nalu_length;
+      RCHECK(reader.Read2(&nalu_length));
+      uint64_t nalu_offset = reader.pos();
+      RCHECK(reader.SkipBytes(nalu_length));
+
+      Nalu nalu;
+      RCHECK(nalu.InitializeFromH265(data() + nalu_offset, nalu_length));
+      RCHECK(nalu.type() == nal_unit_type);
+      AddNalu(nalu);
+    }
+  }
 
   // TODO(kqyang): Parse SPS to get resolutions.
   return true;
diff --git a/packager/media/filters/hevc_decoder_configuration.h b/packager/media/filters/hevc_decoder_configuration.h
index 2783c86f2e..0b111ebf40 100644
--- a/packager/media/filters/hevc_decoder_configuration.h
+++ b/packager/media/filters/hevc_decoder_configuration.h
@@ -13,27 +13,23 @@
 
 #include "packager/base/macros.h"
 #include "packager/media/base/video_stream_info.h"
+#include "packager/media/filters/decoder_configuration.h"
 
 namespace edash_packager {
 namespace media {
 
 /// Class for parsing HEVC decoder configuration.
-class HEVCDecoderConfiguration {
+class HEVCDecoderConfiguration : public DecoderConfiguration {
  public:
   HEVCDecoderConfiguration();
-  ~HEVCDecoderConfiguration();
-
-  /// Parses input to extract HEVC decoder configuration data.
-  /// @return false if there is parsing errors.
-  bool Parse(const std::vector<uint8_t>& data);
+  ~HEVCDecoderConfiguration() override;
 
   /// @return The codec string.
   std::string GetCodecString(VideoCodec codec) const;
 
-  /// @return The size of the NAL unit length field.
-  uint8_t length_size() { return length_size_; }
-
  private:
+  bool ParseInternal() override;
+
   uint8_t version_;
   uint8_t general_profile_space_;
   bool general_tier_flag_;
@@ -41,7 +37,6 @@ class HEVCDecoderConfiguration {
   uint32_t general_profile_compatibility_flags_;
   std::vector<uint8_t> general_constraint_indicator_flags_;
   uint8_t general_level_idc_;
-  uint8_t length_size_;
 
   DISALLOW_COPY_AND_ASSIGN(HEVCDecoderConfiguration);
 };
diff --git a/packager/media/filters/hevc_decoder_configuration_unittest.cc b/packager/media/filters/hevc_decoder_configuration_unittest.cc
index d0f2810644..4860c5ed8c 100644
--- a/packager/media/filters/hevc_decoder_configuration_unittest.cc
+++ b/packager/media/filters/hevc_decoder_configuration_unittest.cc
@@ -13,34 +13,52 @@ namespace media {
 
 TEST(HEVCDecoderConfigurationTest, Success) {
   const uint8_t kHevcDecoderConfigurationData[] = {
-      0x01, 0x02, 0x20, 0x00, 0x00, 0x00, 0x90, 0x00, 0x00, 0x00, 0x00, 0x00,
-      0x3F, 0xF0, 0x00, 0xFC, 0xFD, 0xFA, 0xFA, 0x00, 0x00, 0x0F, 0x04, 0x20,
-      0x00, 0x01, 0x00, 0x18, 0x40, 0x01, 0x0C, 0x01, 0xFF, 0xFF, 0x02, 0x20,
-      0x00, 0x00, 0x03, 0x00, 0x90, 0x00, 0x00, 0x03, 0x00, 0x00, 0x03, 0x00,
-      0x3F, 0x99, 0x98, 0x09, 0x21, 0x00, 0x01, 0x00, 0x29, 0x42, 0x01, 0x01,
-      0x02, 0x20, 0x00, 0x00, 0x03, 0x00, 0x90, 0x00, 0x00, 0x03, 0x00, 0x00,
+      0x01,  // Version
+      0x02,  // profile_indication
+      0x20, 0x00, 0x00, 0x00,  // general_profile_compatibility_flags
+      // general_constraint_indicator_flags
+      0x90, 0x00, 0x00, 0x00, 0x00, 0x00,
+      0x3F,  // general_level_idc
+      0xF0, 0x00, 0xFC, 0xFD, 0xFA, 0xFA, 0x00, 0x00,
+      0x0F,  // length_size_minus_one
+      0x02,  // num_of_arrays
+        // array 1
+        0x20,  // nal type
+        0x00, 0x01,  // num nalus
+          // nalu 1
+          0x00, 0x18,  // nal unit length
+          0x40, 0x01, 0x0C, 0x01, 0xFF, 0xFF, 0x02, 0x20,
+          0x00, 0x00, 0x03, 0x00, 0x90, 0x00, 0x00, 0x03, 0x00, 0x00, 0x03,
+          0x00, 0x3F, 0x99, 0x98, 0x09,
+        // array 2
+        0x21,  // nal type
+        0x00, 0x01,  // num nalus
+          // Nalu 1
+          0x00, 0x0f,  // nal unit length
+          0x42, 0x01, 0x01, 0x02, 0x20, 0x00, 0x00, 0x03, 0x00, 0x90,
+          0x00, 0x00, 0x03, 0x00, 0x00,
   };
 
   HEVCDecoderConfiguration hevc_config;
-  ASSERT_TRUE(hevc_config.Parse(
-      std::vector<uint8_t>(kHevcDecoderConfigurationData,
-                           kHevcDecoderConfigurationData +
-                               arraysize(kHevcDecoderConfigurationData))));
+  ASSERT_TRUE(hevc_config.Parse(kHevcDecoderConfigurationData,
+                                arraysize(kHevcDecoderConfigurationData)));
 
-  EXPECT_EQ(4u, hevc_config.length_size());
+  EXPECT_EQ(4u, hevc_config.nalu_length_size());
 
   EXPECT_EQ("hev1.2.4.L63.90", hevc_config.GetCodecString(kCodecHEV1));
   EXPECT_EQ("hvc1.2.4.L63.90", hevc_config.GetCodecString(kCodecHVC1));
+
+  EXPECT_EQ(2u, hevc_config.nalu_count());
+  EXPECT_EQ(0x16u, hevc_config.nalu(0).payload_size());
+  EXPECT_EQ(0x40, hevc_config.nalu(0).data()[0]);
 }
 
 TEST(HEVCDecoderConfigurationTest, FailOnInsufficientData) {
   const uint8_t kHevcDecoderConfigurationData[] = {0x01, 0x02, 0x20, 0x00};
 
   HEVCDecoderConfiguration hevc_config;
-  ASSERT_FALSE(hevc_config.Parse(
-      std::vector<uint8_t>(kHevcDecoderConfigurationData,
-                           kHevcDecoderConfigurationData +
-                               arraysize(kHevcDecoderConfigurationData))));
+  ASSERT_FALSE(hevc_config.Parse(kHevcDecoderConfigurationData,
+                                 arraysize(kHevcDecoderConfigurationData)));
 }
 
 }  // namespace media
diff --git a/packager/media/filters/nalu_reader.cc b/packager/media/filters/nalu_reader.cc
index 54cc8e0947..806ede9a54 100644
--- a/packager/media/filters/nalu_reader.cc
+++ b/packager/media/filters/nalu_reader.cc
@@ -24,19 +24,22 @@ Nalu::Nalu()
       header_size_(0),
       payload_size_(0),
       ref_idc_(0),
+      nuh_layer_id_(0),
+      nuh_temporal_id_(0),
       type_(0),
       is_video_slice_(false) {}
 
 bool Nalu::InitializeFromH264(const uint8_t* data, uint64_t size) {
   DCHECK(data);
-  DCHECK_GT(size, 0u);
+  if (size == 0)
+    return false;
   uint8_t header = data[0];
   if ((header & 0x80) != 0)
     return false;
 
   data_ = data;
   header_size_ = 1;
-  payload_size_ = size - 1;
+  payload_size_ = size - header_size_;
   ref_idc_ = (header >> 5) & 0x3;
   type_ = header & 0x1F;
   is_video_slice_ = (type_ >= Nalu::H264_NonIDRSlice &&
@@ -44,11 +47,36 @@ bool Nalu::InitializeFromH264(const uint8_t* data, uint64_t size) {
   return true;
 }
 
-NaluReader::NaluReader(uint8_t nal_length_size,
+bool Nalu::InitializeFromH265(const uint8_t* data, uint64_t size) {
+  DCHECK(data);
+  if (size < 2)
+    return false;
+  uint16_t header = (data[0] << 8) | data[1];
+  if ((header & 0x8000) != 0)
+    return false;
+
+  data_ = data;
+  header_size_ = 2;
+  payload_size_ = size - header_size_;
+
+  type_ = (header >> 9) & 0x3F;
+  nuh_layer_id_ = (header >> 3) & 0x3F;
+  nuh_temporal_id_ = (header & 0x7) - 1;
+
+  // Don't treat reserved VCL types as video slices since we cannot parse them.
+  is_video_slice_ =
+      (type_ >= Nalu::H265_TRAIL_N && type_ <= Nalu::H265_RASL_R) ||
+      (type_ >= Nalu::H265_BLA_W_LP && type_ <= Nalu::H265_CRA_NUT);
+  return true;
+}
+
+NaluReader::NaluReader(NaluType type,
+                       uint8_t nal_length_size,
                        const uint8_t* stream,
                        uint64_t stream_size)
     : stream_(stream),
       stream_size_(stream_size),
+      nalu_type_(type),
       nalu_length_size_(nal_length_size),
       format_(nal_length_size == 0 ? kAnnexbByteStreamFormat
                                    : kNalUnitStreamFormat) {
@@ -93,8 +121,14 @@ NaluReader::Result NaluReader::Advance(Nalu* nalu) {
   }
 
   const uint8_t* nalu_data = stream_ + nalu_length_size_or_start_code_size;
-  if (!nalu->InitializeFromH264(nalu_data, nalu_length))
-    return NaluReader::kInvalidStream;
+  if (nalu_type_ == kH264) {
+    if (!nalu->InitializeFromH264(nalu_data, nalu_length))
+      return NaluReader::kInvalidStream;
+  } else {
+    DCHECK_EQ(kH265, nalu_type_);
+    if (!nalu->InitializeFromH265(nalu_data, nalu_length))
+      return NaluReader::kInvalidStream;
+  }
 
   // Move parser state to after this NALU, so next time Advance
   // is called, we will effectively be skipping it.
diff --git a/packager/media/filters/nalu_reader.h b/packager/media/filters/nalu_reader.h
index 43606ebd21..58125a3416 100644
--- a/packager/media/filters/nalu_reader.h
+++ b/packager/media/filters/nalu_reader.h
@@ -36,17 +36,41 @@ class Nalu {
     H264_EOSeq = 10,
     H264_CodedSliceExtension = 20,
   };
+  enum H265NaluType {
+    H265_TRAIL_N = 0,
+    H265_RASL_R = 9,
+
+    H265_BLA_W_LP = 16,
+    H265_IDR_W_RADL = 19,
+    H265_IDR_N_LP = 20,
+    H265_CRA_NUT = 21,
+    H265_RSV_IRAP_VCL23 = 23,
+
+    H265_VPS = 32,
+    H265_SPS = 33,
+    H265_PPS = 34,
+    H265_AUD = 35,
+  };
 
   Nalu();
 
   bool InitializeFromH264(const uint8_t* data,
                           uint64_t size) WARN_UNUSED_RESULT;
 
+  bool InitializeFromH265(const uint8_t* data,
+                          uint64_t size) WARN_UNUSED_RESULT;
+
   const uint8_t* data() const { return data_; }
   uint64_t header_size() const { return header_size_; }
   uint64_t payload_size() const { return payload_size_; }
 
+  // H.264 Specific:
   int ref_idc() const { return ref_idc_; }
+
+  // H.265 Specific:
+  int nuh_layer_id() const { return nuh_layer_id_; }
+  int nuh_temporal_id() const { return nuh_temporal_id_; }
+
   int type() const { return type_; }
   bool is_video_slice() const { return is_video_slice_; }
 
@@ -61,10 +85,13 @@ class Nalu {
   uint64_t payload_size_;
 
   int ref_idc_;
+  int nuh_layer_id_;
+  int nuh_temporal_id_;
   int type_;
   bool is_video_slice_;
 
-  DISALLOW_COPY_AND_ASSIGN(Nalu);
+  // Don't use DISALLOW_COPY_AND_ASSIGN since it is just numbers and a pointer
+  // it does not own.  This allows Nalus to be stored in a vector.
 };
 
 /// Helper class used to read NAL units based on several formats:
@@ -77,11 +104,16 @@ class NaluReader {
     kInvalidStream,      // error in stream
     kEOStream,           // end of stream
   };
+  enum NaluType {
+    kH264,
+    kH265,
+  };
 
   /// @param nalu_length_size should be set to 0 for AnnexB byte streams;
   ///        otherwise, it indicates the size of NAL unit length for the NAL
   ///        unit stream.
-  NaluReader(uint8_t nal_length_size,
+  NaluReader(NaluType type,
+             uint8_t nal_length_size,
              const uint8_t* stream,
              uint64_t stream_size);
   ~NaluReader();
@@ -129,6 +161,8 @@ class NaluReader {
   const uint8_t* stream_;
   // The remaining size of the stream.
   uint64_t stream_size_;
+  // The type of NALU being read.
+  NaluType nalu_type_;
   // The number of bytes the prefix length is; only valid if format is
   // kAnnexbByteStreamFormat.
   uint8_t nalu_length_size_;
diff --git a/packager/media/filters/nalu_reader_unittest.cc b/packager/media/filters/nalu_reader_unittest.cc
index 7552dcf7d4..0e70f3f20a 100644
--- a/packager/media/filters/nalu_reader_unittest.cc
+++ b/packager/media/filters/nalu_reader_unittest.cc
@@ -20,7 +20,8 @@ TEST(NaluReaderTest, StartCodeSearch) {
     0x00, 0x00, 0x00, 0x01, 0x67, 0xbb, 0xcc, 0xdd
   };
 
-  NaluReader reader(kIsAnnexbByteStream, kNaluData, arraysize(kNaluData));
+  NaluReader reader(NaluReader::kH264, kIsAnnexbByteStream, kNaluData,
+                    arraysize(kNaluData));
 
   Nalu nalu;
   ASSERT_EQ(NaluReader::kOk, reader.Advance(&nalu));
@@ -48,7 +49,7 @@ TEST(NaluReaderTest, OneByteNaluLength) {
     0x06, 0x67, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e
   };
 
-  NaluReader reader(1, kNaluData, arraysize(kNaluData));
+  NaluReader reader(NaluReader::kH264, 1, kNaluData, arraysize(kNaluData));
 
   Nalu nalu;
   ASSERT_EQ(NaluReader::kOk, reader.Advance(&nalu));
@@ -76,7 +77,7 @@ TEST(NaluReaderTest, FourByteNaluLength) {
     0x00, 0x00, 0x00, 0x03, 0x67, 0x0a, 0x0b
   };
 
-  NaluReader reader(4, kNaluData, arraysize(kNaluData));
+  NaluReader reader(NaluReader::kH264, 4, kNaluData, arraysize(kNaluData));
 
   Nalu nalu;
   ASSERT_EQ(NaluReader::kOk, reader.Advance(&nalu));
@@ -102,7 +103,7 @@ TEST(NaluReaderTest, ErrorForNotEnoughForNaluLength) {
     0x00
   };
 
-  NaluReader reader(3, kNaluData, arraysize(kNaluData));
+  NaluReader reader(NaluReader::kH264, 3, kNaluData, arraysize(kNaluData));
 
   Nalu nalu;
   EXPECT_EQ(NaluReader::kInvalidStream, reader.Advance(&nalu));
@@ -114,7 +115,7 @@ TEST(NaluReaderTest, ErrorForNaluLengthExceedsRemainingData) {
     0xFF, 0x08, 0x00
   };
 
-  NaluReader reader(1, kNaluData, arraysize(kNaluData));
+  NaluReader reader(NaluReader::kH264, 1, kNaluData, arraysize(kNaluData));
 
   Nalu nalu;
   EXPECT_EQ(NaluReader::kInvalidStream, reader.Advance(&nalu));
@@ -125,7 +126,7 @@ TEST(NaluReaderTest, ErrorForNaluLengthExceedsRemainingData) {
     0x04, 0x08, 0x00, 0x00
   };
 
-  NaluReader reader2(1, kNaluData2, arraysize(kNaluData2));
+  NaluReader reader2(NaluReader::kH264, 1, kNaluData2, arraysize(kNaluData2));
   EXPECT_EQ(NaluReader::kInvalidStream, reader2.Advance(&nalu));
 }
 
@@ -135,11 +136,22 @@ TEST(NaluReaderTest, ErrorForForbiddenBitSet) {
     0x03, 0x80, 0x00, 0x00
   };
 
-  NaluReader reader(1, kNaluData, arraysize(kNaluData));
+  NaluReader reader(NaluReader::kH264, 1, kNaluData, arraysize(kNaluData));
 
   Nalu nalu;
   EXPECT_EQ(NaluReader::kInvalidStream, reader.Advance(&nalu));
 }
 
+TEST(NaluReaderTest, ErrorForZeroSize) {
+  const uint8_t kNaluData[] = {
+    // First NALU
+    0x03, 0x80, 0x00, 0x00
+  };
+
+  Nalu nalu;
+  EXPECT_FALSE(nalu.InitializeFromH264(kNaluData, 0));
+  EXPECT_FALSE(nalu.InitializeFromH265(kNaluData, 0));
+}
+
 }  // namespace media
 }  // namespace edash_packager
diff --git a/packager/media/formats/mp2t/es_parser_h264.cc b/packager/media/formats/mp2t/es_parser_h264.cc
index fcb295eb36..fabe114299 100644
--- a/packager/media/formats/mp2t/es_parser_h264.cc
+++ b/packager/media/formats/mp2t/es_parser_h264.cc
@@ -182,7 +182,8 @@ bool EsParserH264::ParseInternal() {
   int access_unit_size = base::checked_cast<int, int64_t>(
       next_access_unit_pos_ - current_access_unit_pos_);
   DCHECK_LE(access_unit_size, size);
-  NaluReader reader(kIsAnnexbByteStream, es, access_unit_size);
+  NaluReader reader(NaluReader::kH264, kIsAnnexbByteStream, es,
+                    access_unit_size);
 
   while (true) {
     Nalu nalu;
diff --git a/packager/media/formats/mp4/encrypting_fragmenter.cc b/packager/media/formats/mp4/encrypting_fragmenter.cc
index 0f42c35379..1138da290b 100644
--- a/packager/media/formats/mp4/encrypting_fragmenter.cc
+++ b/packager/media/formats/mp4/encrypting_fragmenter.cc
@@ -223,7 +223,10 @@ Status EncryptingFragmenter::EncryptSample(scoped_refptr<MediaSample> sample) {
         data += frame.frame_size;
       }
     } else {
-      NaluReader reader(nalu_length_size_, data, sample->data_size());
+      // TODO(modmaker): Support H.265.
+      const NaluReader::NaluType nalu_type = NaluReader::kH264;
+      NaluReader reader(nalu_type, nalu_length_size_, data,
+                        sample->data_size());
 
       // Store the current length of clear data.  This is used to squash
       // multiple unencrypted NAL units into fewer subsample entries.
diff --git a/packager/media/formats/mp4/mp4_media_parser.cc b/packager/media/formats/mp4/mp4_media_parser.cc
index 285ab22f16..ffe5cc294b 100644
--- a/packager/media/formats/mp4/mp4_media_parser.cc
+++ b/packager/media/formats/mp4/mp4_media_parser.cc
@@ -477,7 +477,7 @@ bool MP4MediaParser::ParseMoov(BoxReader* reader) {
             return false;
           }
           codec_string = avc_config.GetCodecString();
-          nalu_length_size = avc_config.length_size();
+          nalu_length_size = avc_config.nalu_length_size();
 
           if (coded_width != avc_config.coded_width() ||
               coded_height != avc_config.coded_height()) {
@@ -514,7 +514,7 @@ bool MP4MediaParser::ParseMoov(BoxReader* reader) {
             return false;
           }
           codec_string = hevc_config.GetCodecString(video_codec);
-          nalu_length_size = hevc_config.length_size();
+          nalu_length_size = hevc_config.nalu_length_size();
           break;
         }
         case FOURCC_VP08:
diff --git a/packager/media/formats/mp4/video_slice_header_parser.cc b/packager/media/formats/mp4/video_slice_header_parser.cc
index e8f9050e57..0cc614c4b5 100644
--- a/packager/media/formats/mp4/video_slice_header_parser.cc
+++ b/packager/media/formats/mp4/video_slice_header_parser.cc
@@ -6,8 +6,8 @@
 
 #include "packager/media/formats/mp4/video_slice_header_parser.h"
 
+#include "packager/media/filters/avc_decoder_configuration.h"
 #include "packager/media/formats/mp4/rcheck.h"
-#include "packager/media/base/buffer_reader.h"
 
 namespace edash_packager {
 namespace media {
@@ -18,39 +18,18 @@ H264VideoSliceHeaderParser::~H264VideoSliceHeaderParser() {}
 
 bool H264VideoSliceHeaderParser::Initialize(
     const std::vector<uint8_t>& decoder_configuration) {
-  // See ISO 14496-15 sec 5.3.3.1.2
-  BufferReader reader(decoder_configuration.data(),
-                      decoder_configuration.size());
-  RCHECK(reader.SkipBytes(5));
-
-  uint8_t sps_count;
-  RCHECK(reader.Read1(&sps_count));
-  sps_count = sps_count & 0x1f;
-
-  for (size_t i = 0; i < sps_count; i++) {
-    uint16_t size;
-    RCHECK(reader.Read2(&size));
-    const uint8_t* data = reader.data() + reader.pos();
-    RCHECK(reader.SkipBytes(size));
+  AVCDecoderConfiguration config;
+  RCHECK(config.Parse(decoder_configuration));
 
+  for (size_t i = 0; i < config.nalu_count(); i++) {
     int id;
-    Nalu nalu;
-    RCHECK(nalu.InitializeFromH264(data, size));
-    RCHECK(parser_.ParseSPS(nalu, &id) == H264Parser::kOk);
-  }
-
-  uint8_t pps_count;
-  RCHECK(reader.Read1(&pps_count));
-  for (size_t i = 0; i < pps_count; i++) {
-    uint16_t size;
-    RCHECK(reader.Read2(&size));
-    const uint8_t* data = reader.data() + reader.pos();
-    RCHECK(reader.SkipBytes(size));
-
-    int id;
-    Nalu nalu;
-    RCHECK(nalu.InitializeFromH264(data, size));
-    RCHECK(parser_.ParsePPS(nalu, &id) == H264Parser::kOk);
+    const Nalu& nalu = config.nalu(i);
+    if (nalu.type() == Nalu::H264_SPS) {
+      RCHECK(parser_.ParseSPS(nalu, &id) == H264Parser::kOk);
+    } else {
+      DCHECK_EQ(Nalu::H264_PPS, nalu.type());
+      RCHECK(parser_.ParsePPS(nalu, &id) == H264Parser::kOk);
+    }
   }
 
   return true;
diff --git a/packager/media/formats/mp4/video_slice_header_parser_unittest.cc b/packager/media/formats/mp4/video_slice_header_parser_unittest.cc
index cd541b8080..1f1c07dfbd 100644
--- a/packager/media/formats/mp4/video_slice_header_parser_unittest.cc
+++ b/packager/media/formats/mp4/video_slice_header_parser_unittest.cc
@@ -15,7 +15,7 @@ namespace mp4 {
 TEST(H264VideoSliceHeaderParserTest, BasicSupport) {
   // Taken from bear-640x360.mp4 (video)
   const uint8_t kExtraData[] = {
-    // Header (ignored)
+    // Header
     0x01, 0x64, 0x00, 0x1e, 0xff,
     // SPS count (ignore top three bits)
     0xe1,
@@ -50,8 +50,8 @@ TEST(H264VideoSliceHeaderParserTest, BasicSupport) {
 
 TEST(H264VideoSliceHeaderParserTest, SupportsMultipleEntriesInExtraData) {
   const uint8_t kExtraData[] = {
-    // Header (ignored)
-    0xfe, 0xed, 0xf0, 0x0d, 0x00,
+    // Header
+    0x01, 0xed, 0xf0, 0x0d, 0x00,
     // SPS count (ignore top three bits)
     0xe3,
     // SPS
@@ -93,10 +93,16 @@ TEST(H264VideoSliceHeaderParserTest, SupportsMultipleEntriesInExtraData) {
 
 TEST(H264VideoSliceHeaderParserTest, IgnoresExtraDataAtEnd) {
   const uint8_t kExtraData[] = {
-    // Header (ignored)
-    0xfe, 0xed, 0xf0, 0x0d, 0x00,
-    // SPS count
-    0x00,
+    // Header
+    0x01, 0xed, 0xf0, 0x0d, 0x00,
+    // SPS count (ignore top three bits)
+    0xe1,
+    // SPS
+    0x00, 0x19,  // Size
+    0x67, 0x64, 0x00, 0x1e, 0xac, 0xd9, 0x40, 0xa0,
+    0x2f, 0xf9, 0x70, 0x11, 0x00, 0x00, 0x03, 0x03,
+    0xe9, 0x00, 0x00, 0xea, 0x60, 0x0f, 0x16, 0x2d,
+    0x96,
     // PPS count
     0x00,
     // Extra data
@@ -111,8 +117,8 @@ TEST(H264VideoSliceHeaderParserTest, IgnoresExtraDataAtEnd) {
 
 TEST(H264VideoSliceHeaderParserTest, ErrorsForEOSAfterEntry) {
   const uint8_t kExtraData[] = {
-    // Header (ignored)
-    0xfe, 0xed, 0xf0, 0x0d, 0x00,
+    // Header
+    0x01, 0xed, 0xf0, 0x0d, 0x00,
     // SPS count (ignore top three bits)
     0xe3,
     // SPS
@@ -131,8 +137,8 @@ TEST(H264VideoSliceHeaderParserTest, ErrorsForEOSAfterEntry) {
 
 TEST(H264VideoSliceHeaderParserTest, ErrorsForEOSWithinEntry) {
   const uint8_t kExtraData[] = {
-    // Header (ignored)
-    0xfe, 0xed, 0xf0, 0x0d, 0x00,
+    // Header
+    0x01, 0xed, 0xf0, 0x0d, 0x00,
     // SPS count (ignore top three bits)
     0xe3,
     // SPS