We can now extract the PSSH box from the initalization mp4 to get the Key ID for decryption. Also added re-enabled decryption

dashdownloader_multisegment.py

@@ -6,12 +6,13 @@ from mpegdash.utils import (
     parse_attr_value, parse_child_nodes, parse_node_value,
     write_attr_value, write_child_node, write_node_value
 )
+from utils import extract_kid
 
 #global ids
 retry = 3
-download_dir = os.getcwd() # set the folder to output
+download_dir = os.getcwd() + '\out_dir' # set the folder to output
 working_dir = os.getcwd() + "\working_dir" # set the folder to download ephemeral files
-keyfile_path = download_dir + "\keyfile.json"
+keyfile_path = os.getcwd() + "\keyfile.json"
 
 if not os.path.exists(working_dir):
     os.makedirs(working_dir)
@@ -111,9 +112,9 @@ def mux_process(video_title,outfile):
         command = f"nice -n 7 ffmpeg -y -i decrypted_audio.mp4 -i decrypted_video.mp4 -acodec copy -vcodec copy -fflags +bitexact -map_metadata -1 -metadata title=\"{video_title}\" -metadata creation_time=2020-00-00T70:05:30.000000Z {outfile}.mp4"
     os.system(command)
 
-def decrypt(filename):
+def decrypt(kid,filename):
     try:
-        key = keyfile["0"]
+        key = keyfile[kid.lower()]
     except KeyError as error:
         exit("Key not found")
     if(os.name == "nt"):
@@ -125,7 +126,11 @@ def decrypt(filename):
 def handle_irregular_segments(media_info,video_title,output_path):
     no_segment,video_url,video_init,video_extension,no_segment,audio_url,audio_init,audio_extension = media_info
     download_media("video_0.seg.mp4",video_init)
+    video_kid = extract_kid("video_0.seg.mp4")
+    print("KID for video file is: " + video_kid)
     download_media("audio_0.seg.mp4",audio_init)
+    audio_kid = extract_kid("audio_0.seg.mp4")
+    print("KID for audio file is: " + audio_kid)
     for count in range(1,no_segment):
         video_segment_url = video_url.replace("$Number$",str(count))
         audio_segment_url = audio_url.replace("$Number$",str(count))
@@ -142,8 +147,8 @@ def handle_irregular_segments(media_info,video_title,output_path):
             print(audio_concat_command)
             os.system(video_concat_command)
             os.system(audio_concat_command)
-            decrypt("video")
+            decrypt(video_kid,"video")
-            decrypt("audio")
+            decrypt(audio_kid,"audio")
             mux_process(video_title,output_path)
             break
     
@@ -188,11 +193,11 @@ def manifest_parser(mpd_url):
 
 
 if __name__ == "__main__":
-    mpd = "https://www.udemy.com/assets/25653992/encrypted-files/out/v1/6d2a767a83064e7fa747bedeb1841f7d/06c8dc12da2745f1b0b4e7c2c032dfef/842d4b8e2e014fbbb87c640ddc89d036/index.mpd?token=eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJleHAiOjE2MjEzMjc0NzAsInBhdGgiOiJvdXQvdjEvNmQyYTc2N2E4MzA2NGU3ZmE3NDdiZWRlYjE4NDFmN2QvMDZjOGRjMTJkYTI3NDVmMWIwYjRlN2MyYzAzMmRmZWYvODQyZDRiOGUyZTAxNGZiYmI4N2M2NDBkZGM4OWQwMzYvIn0.4NpalcpDz0i5SXl6UYxnxECoacfRkJBHtKx5tWlJMOQ&provider=cloudfront&v=1"
+    mpd = "mpd url"
     base_url = mpd.split("index.mpd")[0]
     os.chdir(working_dir)
     media_info = manifest_parser(mpd)
-    video_title = "171. Editing Collision Meshes"
+    video_title = "175. Inverse Transforming Vectors" # the video title that gets embeded into the mp4 file metadata
-    output_path = download_dir + "\\171. Editing Collision Meshes"
+    output_path = download_dir + "\\175. Inverse Transforming Vectors" # video title used in the filename, dont append .mp4
     handle_irregular_segments(media_info,video_title,output_path)
     cleanup(working_dir)

mp4parse.py

@@ -0,0 +1,497 @@
+""" MP4 Parser based on:
+http://download.macromedia.com/f4v/video_file_format_spec_v10_1.pdf 
+
+@author: Alastair McCormack
+@license: MIT License
+
+"""
+
+import bitstring
+from datetime import datetime
+from collections import namedtuple
+import logging
+import six
+
+log = logging.getLogger(__name__)
+#log.addHandler(logging.NullHandler())
+log.setLevel(logging.WARN)
+
+class MixinDictRepr(object):
+    def __repr__(self, *args, **kwargs):
+        return "{class_name} : {content!r} ".format(class_name=self.__class__.__name__,
+                                                    content=self.__dict__)
+        
+class MixinMinimalRepr(object):
+    """ A minimal representaion when the payload could be large """
+   
+    def __repr__(self, *args, **kwargs):
+        return "{class_name} : {content!r} ".format(class_name=self.__class__.__name__,
+                                                    content=self.__dict__.keys())
+
+class FragmentRunTableBox(MixinDictRepr):
+    pass
+
+
+class UnImplementedBox(MixinDictRepr):
+    type = "na"
+    pass
+
+
+class MovieFragmentBox(MixinDictRepr):
+    type = "moof"
+
+class MovieBox(MixinDictRepr):
+    type = "moov"
+
+class BootStrapInfoBox(MixinDictRepr):
+    type = "abst"
+        
+    @property
+    def current_media_time(self):
+        return self._current_media_time
+    
+    @current_media_time.setter
+    def current_media_time(self, epoch_timestamp):
+        """ Takes a timestamp arg and saves it as datetime """
+        self._current_media_time = datetime.utcfromtimestamp(epoch_timestamp/float(self.time_scale))
+        
+class FragmentRandomAccessBox(MixinDictRepr):
+    """ aka afra """
+    type = "afra"
+    
+    FragmentRandomAccessBoxEntry = namedtuple("FragmentRandomAccessBoxEntry", ["time", "offset"])
+    FragmentRandomAccessBoxGlobalEntry = namedtuple("FragmentRandomAccessBoxGlobalEntry", ["time", "segment_number", "fragment_number", "afra_offset", "sample_offset"])
+    
+    pass
+
+
+class SegmentRunTable(MixinDictRepr):
+    type = "asrt"
+
+    SegmentRunTableEntry = namedtuple('SegmentRunTableEntry', ["first_segment", "fragments_per_segment"])
+    pass
+
+class FragmentRunTable(MixinDictRepr):
+    type = "afrt"
+
+    class FragmentRunTableEntry( namedtuple('FragmentRunTableEntry', 
+                                       ["first_fragment", 
+                                        "first_fragment_timestamp", 
+                                        "fragment_duration",
+                                        "discontinuity_indicator"]) ):
+        
+        DI_END_OF_PRESENTATION = 0
+        DI_NUMBERING = 1
+        DI_TIMESTAMP = 2
+        DI_TIMESTAMP_AND_NUMBER = 3
+        
+        def __eq__(self, other):
+            if self.first_fragment == other.first_fragment and \
+                self.first_fragment_timestamp == other.first_fragment_timestamp and \
+                self.fragment_duration == other.fragment_duration and \
+                self.discontinuity_indicator == other.discontinuity_indicator:
+                    return True
+        
+    
+    def __repr__(self, *args, **kwargs):
+        return str(self.__dict__)
+
+class MediaDataBox(MixinMinimalRepr):
+    """ aka mdat """
+    type = "mdat"
+
+class MovieFragmentHeader(MixinDictRepr):
+    type = "mfhd"
+
+class ProtectionSystemSpecificHeader(MixinDictRepr):
+    type = "pssh"
+
+BoxHeader = namedtuple( "BoxHeader", ["box_size", "box_type", "header_size"] )
+ 
+    
+class F4VParser(object):
+
+    @classmethod
+    def parse(cls, filename=None, bytes_input=None, file_input=None, offset_bytes=0, headers_only=False):
+        """
+        Parse an MP4 file or bytes into boxes
+
+
+        :param filename: filename of mp4 file.
+        :type filename: str.
+        :param bytes_input: bytes of mp4 file.
+        :type bytes_input: bytes / Python 2.x str.
+        :param offset_bytes: start parsing at offset.
+        :type offset_bytes: int.
+        :param headers_only: Ignore data and return just headers. Useful when data is cut short
+        :type: headers_only: boolean
+        :return: BMFF Boxes or Headers
+
+        """
+
+        box_lookup = {
+            BootStrapInfoBox.type:                  cls._parse_abst,
+            FragmentRandomAccessBox.type:           cls._parse_afra,
+            MediaDataBox.type:                      cls._parse_mdat,
+            MovieFragmentBox.type:                  cls._parse_moof,
+            MovieBox.type:                          cls._parse_moov,
+            MovieFragmentHeader.type:               cls._parse_mfhd,
+            ProtectionSystemSpecificHeader.type:    cls._parse_pssh
+        }
+        
+        if filename:
+            bs = bitstring.ConstBitStream(filename=filename, offset=offset_bytes * 8)
+        elif bytes_input:
+            bs = bitstring.ConstBitStream(bytes=bytes_input, offset=offset_bytes * 8)
+        else:
+            bs = bitstring.ConstBitStream(auto=file_input, offset=offset_bytes * 8)
+        
+        log.debug("Starting parse")
+        log.debug("Size is %d bits", bs.len)
+
+        while bs.pos < bs.len:
+            log.debug("Byte pos before header: %d relative to (%d)", bs.bytepos, offset_bytes)
+            log.debug("Reading header")
+            try:
+                header = cls._read_box_header(bs)
+            except bitstring.ReadError as e:
+                log.error("Premature end of data while reading box header")
+                raise
+            
+            log.debug("Header type: %s", header.box_type)
+            log.debug("Byte pos after header: %d relative to (%d)", bs.bytepos, offset_bytes)
+
+            if headers_only:
+                yield header
+
+                # move pointer to next header if possible
+                try:
+                    bs.bytepos += header.box_size
+                except ValueError:
+                    log.warning("Premature end of data")
+                    raise
+            else:
+                # Get parser method for header type
+                parse_function = box_lookup.get(header.box_type, cls._parse_unimplemented)
+                try:
+                    yield parse_function(bs, header)
+                except ValueError as e:
+                    log.error("Premature end of data")
+                    raise
+
+    @classmethod
+    def _is_mp4(cls, parser):
+        try:
+            for box in parser:
+                return True
+        except ValueError:
+            return False
+
+    @classmethod
+    def is_mp4_s(cls, bytes_input):
+        """ Is bytes_input the contents of an MP4 file
+
+        :param bytes_input: str/bytes to check.
+        :type bytes_input: str/bytes.
+        :return:
+        """
+
+        parser = cls.parse(bytes_input=bytes_input, headers_only=True)
+        return cls._is_mp4(parser)
+
+    @classmethod
+    def is_mp4(cls, file_input):
+        """ Checks input if it's an MP4 file
+
+        :param input: Filename or file object
+        :type input: str, file
+        :param state: Current state to be in.
+        :type state: bool.
+        :returns:  bool.
+        :raises: AttributeError, KeyError
+        """
+
+        if hasattr(file_input, "read"):
+           parser = cls.parse(file_input=file_input, headers_only=True)
+        else:
+           parser = cls.parse(filename=file_input, headers_only=True)
+        return cls._is_mp4(parser)
+
+    @staticmethod
+    def _read_string(bs):
+        """ read UTF8 null terminated string """
+        result = bs.readto('0x00', bytealigned=True).bytes.decode("utf-8")[:-1]
+        return result if result else None
+
+    @classmethod
+    def _read_count_and_string_table(cls, bs):
+        """ Read a count then return the strings in a list """
+        result = []
+        entry_count = bs.read("uint:8")
+        for _ in six.range(0, entry_count):
+            result.append( cls._read_string(bs) )
+        return result
+
+    @staticmethod
+    def _read_box_header(bs):
+        header_start_pos = bs.bytepos
+        size, box_type = bs.readlist("uint:32, bytes:4")
+
+        # box_type should be an ASCII string. Decode as UTF-8 in case
+        try:
+            box_type = box_type.decode('utf-8')
+        except UnicodeDecodeError:
+            # we'll leave as bytes instead
+            pass
+
+        # if size == 1, then this is an extended size type.
+        # Therefore read the next 64 bits as size
+        if size == 1:
+            size = bs.read("uint:64")
+        header_end_pos = bs.bytepos
+        header_size = header_end_pos - header_start_pos    
+        
+        return BoxHeader(box_size=size-header_size, box_type=box_type, header_size=header_size)
+
+    @staticmethod
+    def _parse_unimplemented(bs, header):
+        ui = UnImplementedBox()
+        ui.header = header
+
+        bs.bytepos += header.box_size
+        
+        return ui
+
+    @classmethod
+    def _parse_afra(cls, bs, header):
+    
+        afra = FragmentRandomAccessBox()
+        afra.header = header
+        
+        # read the entire box in case there's padding
+        afra_bs = bs.read(header.box_size * 8)
+        # skip Version and Flags
+        afra_bs.pos += 8 + 24
+        long_ids, long_offsets, global_entries, afra.time_scale, local_entry_count  = \
+                afra_bs.readlist("bool, bool, bool, pad:5, uint:32, uint:32")
+        
+        if long_ids:
+            id_bs_type = "uint:32"
+        else:
+            id_bs_type = "uint:16"
+                
+        if long_offsets:
+            offset_bs_type = "uint:64"
+        else:
+            offset_bs_type = "uint:32"
+        
+        log.debug("local_access_entries entry count: %s", local_entry_count)
+        afra.local_access_entries = []        
+        for _ in six.range(0, local_entry_count):
+            time = cls._parse_time_field(afra_bs, afra.time_scale)
+            
+            offset = afra_bs.read(offset_bs_type)
+            
+            afra_entry = \
+                FragmentRandomAccessBox.FragmentRandomAccessBoxEntry(time=time, 
+                                                                     offset=offset)
+            afra.local_access_entries.append(afra_entry)
+        
+        afra.global_access_entries = []
+        
+        if global_entries:
+            global_entry_count = afra_bs.read("uint:32")
+            
+            log.debug("global_access_entries entry count: %s", global_entry_count)  
+            
+            for _ in six.range(0, global_entry_count):
+                time = cls._parse_time_field(afra_bs, afra.time_scale)
+                
+                segment_number = afra_bs.read(id_bs_type)
+                fragment_number = afra_bs.read(id_bs_type)
+                
+                afra_offset = afra_bs.read(offset_bs_type)
+                sample_offset = afra_bs.read(offset_bs_type)
+                
+                afra_global_entry = \
+                    FragmentRandomAccessBox.FragmentRandomAccessBoxGlobalEntry(
+                                            time=time,
+                                            segment_number=segment_number,
+                                            fragment_number=fragment_number,
+                                            afra_offset=afra_offset,
+                                            sample_offset=sample_offset)
+    
+                afra.global_access_entries.append(afra_global_entry)
+       
+        return afra
+
+    @classmethod
+    def _parse_moof(cls, bootstrap_bs, header):
+        moof = MovieFragmentBox()
+        moof.header = header
+
+        box_bs = bootstrap_bs.read(moof.header.box_size * 8)
+
+        for child_box in cls.parse(bytes_input=box_bs.bytes):
+            setattr(moof, child_box.type, child_box)
+
+        return moof
+
+    @classmethod
+    def _parse_moov(cls, bootstrap_bs, header):
+        moov = MovieBox()
+        moov.header = header
+        psshs = []
+
+        box_bs = bootstrap_bs.read(moov.header.box_size * 8)
+
+        for child_box in cls.parse(bytes_input=box_bs.bytes):
+            if(child_box.type == "pssh"):
+                psshs.append(child_box)
+            else:
+                setattr(moov, child_box.type, child_box)
+        setattr(moov, "pssh", psshs)
+
+        return moov
+
+    @classmethod
+    def _parse_mfhd(cls, bootstrap_bs, header):
+        mfhd = MovieFragmentHeader()
+        mfhd.header = header
+
+        box_bs = bootstrap_bs.read(mfhd.header.box_size * 8)
+        return mfhd
+
+    @staticmethod
+    def _parse_pssh(bootstrap_bs, header):
+        pssh = ProtectionSystemSpecificHeader()
+        pssh.header = header
+
+        box_bs = bootstrap_bs.read(pssh.header.box_size*8)
+        # Payload appears to be 8 bytes in.
+        data = box_bs.hex[8:]
+        pssh.system_id = data[:32]
+        pssh.payload = data[40:]
+        return pssh
+
+    @classmethod
+    def _parse_abst(cls, bootstrap_bs, header):
+        
+        abst = BootStrapInfoBox()
+        abst.header = header
+        
+        box_bs = bootstrap_bs.read(abst.header.box_size * 8)
+        
+        abst.version, abst.profile_raw, abst.live, abst.update, \
+        abst.time_scale, abst.current_media_time, abst.smpte_timecode_offset = \
+                box_bs.readlist("""pad:8, pad:24, uint:32, uint:2, bool, bool,
+                                   pad:4,
+                                   uint:32, uint:64, uint:64""")
+        abst.movie_identifier = cls._read_string(box_bs)
+        
+        abst.server_entry_table = cls._read_count_and_string_table(box_bs)
+        abst.quality_entry_table = cls._read_count_and_string_table(box_bs)
+            
+        abst.drm_data = cls._read_string(box_bs)
+        abst.meta_data = cls._read_string(box_bs)
+                
+        abst.segment_run_tables = []
+        
+        segment_count = box_bs.read("uint:8")
+        log.debug("segment_count: %d" % segment_count)
+        for _ in six.range(0, segment_count):
+            abst.segment_run_tables.append( cls._parse_asrt(box_bs) )
+
+        abst.fragment_tables = []
+        fragment_count = box_bs.read("uint:8")
+        log.debug("fragment_count: %d" % fragment_count)
+        for _ in xrange(0, fragment_count):
+            abst.fragment_tables.append( cls._parse_afrt(box_bs) )
+        
+        log.debug("Finished parsing abst")
+        
+        return abst
+
+    @classmethod
+    def _parse_asrt(cls, box_bs):
+        """ Parse asrt / Segment Run Table Box """
+        
+        asrt = SegmentRunTable()
+        asrt.header = cls._read_box_header(box_bs)
+        # read the entire box in case there's padding
+        asrt_bs_box = box_bs.read(asrt.header.box_size * 8)
+        
+        asrt_bs_box.pos += 8
+        update_flag = asrt_bs_box.read("uint:24")
+        asrt.update = True if update_flag == 1 else False
+        
+        asrt.quality_segment_url_modifiers = cls._read_count_and_string_table(asrt_bs_box)
+        
+        asrt.segment_run_table_entries = []
+        segment_count = asrt_bs_box.read("uint:32")
+        
+        for _ in six.range(0, segment_count):
+            first_segment = asrt_bs_box.read("uint:32")
+            fragments_per_segment = asrt_bs_box.read("uint:32")
+            asrt.segment_run_table_entries.append( 
+                SegmentRunTable.SegmentRunTableEntry(first_segment=first_segment,
+                                                     fragments_per_segment=fragments_per_segment) )
+        return asrt
+
+    @classmethod
+    def _parse_afrt(cls, box_bs):
+        """ Parse afrt / Fragment Run Table Box """
+        
+        afrt = FragmentRunTable()
+        afrt.header = cls._read_box_header(box_bs)
+        # read the entire box in case there's padding
+        afrt_bs_box = box_bs.read(afrt.header.box_size * 8)
+        
+        afrt_bs_box.pos += 8
+        update_flag = afrt_bs_box.read("uint:24")
+        afrt.update = True if update_flag == 1 else False
+ 
+        afrt.time_scale = afrt_bs_box.read("uint:32")
+        afrt.quality_fragment_url_modifiers = cls._read_count_and_string_table(afrt_bs_box)
+        
+        fragment_count = afrt_bs_box.read("uint:32")
+        
+        afrt.fragments = []
+
+        for _ in six.range(0, fragment_count):
+            first_fragment = afrt_bs_box.read("uint:32")
+            first_fragment_timestamp_raw = afrt_bs_box.read("uint:64")
+            
+            try:
+                first_fragment_timestamp = datetime.utcfromtimestamp(first_fragment_timestamp_raw/float(afrt.time_scale))
+            except ValueError:
+                # Elemental sometimes create odd timestamps
+                first_fragment_timestamp = None
+                
+            fragment_duration = afrt_bs_box.read("uint:32")
+            
+            if fragment_duration == 0:
+                discontinuity_indicator = afrt_bs_box.read("uint:8")
+            else:
+                discontinuity_indicator = None
+            
+            frte = FragmentRunTable.FragmentRunTableEntry(first_fragment=first_fragment,
+                                                          first_fragment_timestamp=first_fragment_timestamp,
+                                                          fragment_duration=fragment_duration,
+                                                          discontinuity_indicator=discontinuity_indicator)
+            afrt.fragments.append(frte)
+        return afrt
+
+    @staticmethod
+    def _parse_mdat(box_bs, header):
+        """ Parse afrt / Fragment Run Table Box """
+                
+        mdat = MediaDataBox()
+        mdat.header = header
+        mdat.payload = box_bs.read(mdat.header.box_size * 8).bytes
+        return mdat
+
+    @staticmethod
+    def _parse_time_field(bs, scale):
+        timestamp = bs.read("uint:64")
+        return datetime.utcfromtimestamp(timestamp / float(scale) )

utils.py

@@ -0,0 +1,32 @@
+import mp4parse
+import codecs
+import widevine_pssh_pb2
+import base64
+
+def extract_kid(mp4_file):
+    """
+    Parameters
+    ----------
+    mp4_file : str
+        MP4 file with a PSSH header
+
+
+    Returns
+    -------
+    String
+
+    """
+
+    boxes = mp4parse.F4VParser.parse(filename=mp4_file)
+    for box in boxes:
+        if box.header.box_type == 'moov':
+            pssh_box = next(x for x in box.pssh if x.system_id == "edef8ba979d64acea3c827dcd51d21ed")
+            hex = codecs.decode(pssh_box.payload, "hex")
+
+            pssh = widevine_pssh_pb2.WidevinePsshData()
+            pssh.ParseFromString(hex)
+            content_id = base64.b16encode(pssh.content_id)
+            return content_id.decode("utf-8")
+
+    # No Moof or PSSH header found
+    return None

widevine_pssh_pb2.py

@@ -0,0 +1,141 @@
+# Generated by the protocol buffer compiler.  DO NOT EDIT!
+# source: widevine_pssh.proto
+
+import sys
+_b=sys.version_info[0]<3 and (lambda x:x) or (lambda x:x.encode('latin1'))
+from google.protobuf import descriptor as _descriptor
+from google.protobuf import message as _message
+from google.protobuf import reflection as _reflection
+from google.protobuf import symbol_database as _symbol_database
+from google.protobuf import descriptor_pb2
+# @@protoc_insertion_point(imports)
+
+_sym_db = _symbol_database.Default()
+
+
+
+
+DESCRIPTOR = _descriptor.FileDescriptor(
+  name='widevine_pssh.proto',
+  package='',
+  serialized_pb=_b('\n\x13widevine_pssh.proto\"\xfc\x01\n\x10WidevinePsshData\x12.\n\talgorithm\x18\x01 \x01(\x0e\x32\x1b.WidevinePsshData.Algorithm\x12\x0e\n\x06key_id\x18\x02 \x03(\x0c\x12\x10\n\x08provider\x18\x03 \x01(\t\x12\x12\n\ncontent_id\x18\x04 \x01(\x0c\x12\x12\n\ntrack_type\x18\x05 \x01(\t\x12\x0e\n\x06policy\x18\x06 \x01(\t\x12\x1b\n\x13\x63rypto_period_index\x18\x07 \x01(\r\x12\x17\n\x0fgrouped_license\x18\x08 \x01(\x0c\"(\n\tAlgorithm\x12\x0f\n\x0bUNENCRYPTED\x10\x00\x12\n\n\x06\x41\x45SCTR\x10\x01')
+)
+_sym_db.RegisterFileDescriptor(DESCRIPTOR)
+
+
+
+_WIDEVINEPSSHDATA_ALGORITHM = _descriptor.EnumDescriptor(
+  name='Algorithm',
+  full_name='WidevinePsshData.Algorithm',
+  filename=None,
+  file=DESCRIPTOR,
+  values=[
+    _descriptor.EnumValueDescriptor(
+      name='UNENCRYPTED', index=0, number=0,
+      options=None,
+      type=None),
+    _descriptor.EnumValueDescriptor(
+      name='AESCTR', index=1, number=1,
+      options=None,
+      type=None),
+  ],
+  containing_type=None,
+  options=None,
+  serialized_start=236,
+  serialized_end=276,
+)
+_sym_db.RegisterEnumDescriptor(_WIDEVINEPSSHDATA_ALGORITHM)
+
+
+_WIDEVINEPSSHDATA = _descriptor.Descriptor(
+  name='WidevinePsshData',
+  full_name='WidevinePsshData',
+  filename=None,
+  file=DESCRIPTOR,
+  containing_type=None,
+  fields=[
+    _descriptor.FieldDescriptor(
+      name='algorithm', full_name='WidevinePsshData.algorithm', index=0,
+      number=1, type=14, cpp_type=8, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='key_id', full_name='WidevinePsshData.key_id', index=1,
+      number=2, type=12, cpp_type=9, label=3,
+      has_default_value=False, default_value=[],
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='provider', full_name='WidevinePsshData.provider', index=2,
+      number=3, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=_b("").decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='content_id', full_name='WidevinePsshData.content_id', index=3,
+      number=4, type=12, cpp_type=9, label=1,
+      has_default_value=False, default_value=_b(""),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='track_type', full_name='WidevinePsshData.track_type', index=4,
+      number=5, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=_b("").decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='policy', full_name='WidevinePsshData.policy', index=5,
+      number=6, type=9, cpp_type=9, label=1,
+      has_default_value=False, default_value=_b("").decode('utf-8'),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='crypto_period_index', full_name='WidevinePsshData.crypto_period_index', index=6,
+      number=7, type=13, cpp_type=3, label=1,
+      has_default_value=False, default_value=0,
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+    _descriptor.FieldDescriptor(
+      name='grouped_license', full_name='WidevinePsshData.grouped_license', index=7,
+      number=8, type=12, cpp_type=9, label=1,
+      has_default_value=False, default_value=_b(""),
+      message_type=None, enum_type=None, containing_type=None,
+      is_extension=False, extension_scope=None,
+      options=None),
+  ],
+  extensions=[
+  ],
+  nested_types=[],
+  enum_types=[
+    _WIDEVINEPSSHDATA_ALGORITHM,
+  ],
+  options=None,
+  is_extendable=False,
+  extension_ranges=[],
+  oneofs=[
+  ],
+  serialized_start=24,
+  serialized_end=276,
+)
+
+_WIDEVINEPSSHDATA.fields_by_name['algorithm'].enum_type = _WIDEVINEPSSHDATA_ALGORITHM
+_WIDEVINEPSSHDATA_ALGORITHM.containing_type = _WIDEVINEPSSHDATA
+DESCRIPTOR.message_types_by_name['WidevinePsshData'] = _WIDEVINEPSSHDATA
+
+WidevinePsshData = _reflection.GeneratedProtocolMessageType('WidevinePsshData', (_message.Message,), dict(
+  DESCRIPTOR = _WIDEVINEPSSHDATA,
+  __module__ = 'widevine_pssh_pb2'
+  # @@protoc_insertion_point(class_scope:WidevinePsshData)
+  ))
+_sym_db.RegisterMessage(WidevinePsshData)
+
+
+# @@protoc_insertion_point(module_scope)