输出元数据

概述

编码作业与要对其执行编码任务的输入资产关联。例如,将 MP4 文件编码为 H.264 MP4 自适应比特率集;创建缩略图;创建覆盖。完成任务后,会生成输出资产。输出资产包括视频、音频、缩略图等。输出资产还包含提供输出资产相关元数据的文件。元数据 XML 文件的名称采用下列格式:<source_file_name>_manifest.xml(例如,BigBuckBunny_manifest.xml)。

若要检查元数据文件,可以创建 SAS 定位器并将文件下载到本地计算机。

本主题介绍输出元数据 (<source_file_name>_manifest.xml) 以其为基础的 XML 架构的元素和类型。有关包含输入资产的元数据的文件的信息,请参阅输入元数据

Note

可以在本主题末尾找到完整架构代码 XML 示例。

AssetFiles 根元素

用于编码作业的 AssetFile 条目的集合。

子元素

名称 说明

AssetFile

minOccurs="0"

maxOccurs="1"

AssetFiles 集合中的 AssetFile e元素

AssetFile 元素

可以找到 XML 示例 XML 示例

属性

名称 类型 说明

Name

必需

xs:string 媒体资产文件名称。

Size

minInclusive ="0"

必需

xs:long 以字节为单位的资产文件大小。

Duration

必需

xs:duration 内容播放持续时间。

子元素

名称 说明
输入/源媒体文件的集合,处理该集合以生成此 AssetFile。有关详细信息,请参阅源元素

VideoTracks

minOccurs="0"

maxOccurs="1"

每个物理 AssetFile 可以包含零个或以上交错到相应容器格式的视频轨道。这是所有这些视频轨道的集合。有关详细信息,请参阅 VideoTracks 元素

AudioTracks

minOccurs="0"

maxOccurs="1"

每个物理 AssetFile 可以包含零个或以上交错到相应容器格式的音频轨道。这是所有这些音频轨道的集合。有关详细信息,请参阅 AudioTracks 元素

Sources 元素

输入/源媒体文件的集合,处理该集合以生成此 AssetFile。

可以找到 XML 示例 XML 示例

子元素

名称 说明

Source

minOccurs="1"

maxOccurs="unbounded"

生成此资产时所使用的输入/源文件。有关详细信息,请参阅 元素

Source 元素

生成此资产时所使用的输入/源文件。

可以找到 XML 示例 XML 示例

属性

名称 类型 说明

Name

必需

xs:string 输入源文件名称。

VideoTracks 元素

每个物理 AssetFile 可以包含零个或以上交错到相应容器格式的视频轨道。这是所有这些视频轨道的集合。

可以找到 XML 示例 XML 示例

子元素

名称 说明

VideoTrack

minOccurs="1"

maxOccurs="unbounded"

父 AssetFile 中的特定视频轨道。有关详细信息,请参阅 VideoTrack 元素

VideoTrack 元素

父 AssetFile 中的特定视频轨道。

可以找到 XML 示例 XML 示例

属性

名称 类型 说明

Id

minInclusive ="0"

Required

xs:int 此视频轨道从零开始的索引。注意:这并不一定是 MP4 文件中使用的 TrackID。

FourCC

必需

xs:string 视频编解码器 FourCC 代码。
配置文件 xs:string H264 配置文件(仅适用于 H264 编解码器)。
级别 xs:string H264 级别(仅适用于 H264 编解码器)。

Width

minInclusive ="0"

必需

xs:int 以像素为单位的编码视频宽度。

Height

minInclusive ="0"

必需

xs:int 以像素为单位的编码视频高度。

DisplayAspectRatioNumerator

minInclusive ="0"

必需

xs:double 视频显示纵横比分子。

DisplayAspectRatioDenominator

minInclusive ="0"

必需

xs:double 视频显示纵横比分母。

Framerate

minInclusive ="0"

必需

xs:decimal 采用 .3f 格式的测量的视频帧速率。

TargetFramerate

minInclusive ="0"

必需

xs:decimal 预设 .3f 格式的目标视频帧速率。

Bitrate

minInclusive ="0"

必需

xs:int 由 AssetFile 计算所得的平均视频比特率(千比特/秒)。仅针对基本流有效负载计数,不包含打包开销。

TargetBitrate

minInclusive ="0"

必需

xs:int 通过编码预设请求的此视频轨道的目标平均比特率(千比特/秒)。

MaxGOPBitrate

minInclusive ="0"

xs:int 此视频轨道的最大 GOP 平均比特率(千比特/秒)。

AudioTracks 元素

每个物理 AssetFile 可以包含零个或以上交错到相应容器格式的音频轨道。这是所有这些音频轨道的集合。

可以找到 XML 示例 XML 示例

子元素

名称 说明

AudioTrack

minOccurs="1"

maxOccurs="unbounded"

父 AssetFile 中的特定音频轨道。有关详细信息,请参阅 AudioTrack 元素

AudioTrack 元素

父 AssetFile 中的特定音频轨道。

可以找到 XML 示例 XML 示例

属性

名称 类型 说明

Id

minInclusive ="0"

Required

xs:int 此音频轨道从零开始的索引。注意:这并不一定是 MP4 文件中使用的 TrackID。
Codec xs:string 音频轨道编解码器字符串。
EncoderVersion xs:string 可选的编码器版本字符串,对于 EAC3 是必需的。

Channels

minInclusive ="0"

必需

xs:int 音频通道数。

SamplingRate

minInclusive ="0"

必需

xs:int 音频采样率(样本数/秒或 Hz)。

Bitrate

minInclusive ="0"

必需

xs:int 由 AssetFile 计算所得的平均音频比特率(比特/秒)。仅针对基本流有效负载计数,不包含打包开销。

BitsPerSample

minInclusive ="0"

必需

xs:int wFormatTag 格式类型的每个样本位数。

子元素

名称 说明

LoudnessMeteringResultParameters

minOccurs="0"

maxOccurs="1"

响度测量结果参数。有关详细信息,请参阅 LoudnessMeteringResultParameters 元素

LoudnessMeteringResultParameters 元素

响度测量结果参数。

可以找到 XML 示例 XML 示例

属性

名称 类型 说明
DPLMVersionInformation xs:string Dolby 专业响度测量开发套件版本。

DialogNormalization

minInclusive="-31" maxInclusive="-1"

必需

xs:int 通过 DPLM 收集的 DialogNormalization,设置 LoudnessMetering 时为必需

IntegratedLoudness

minInclusive="-70" maxInclusive="10"

必需

xs:float 集成的响度

IntegratedLoudnessUnit

必需

xs:string 集成的响度单位。

IntegratedLoudnessGatingMethod

必需

xs:string 选通标识符

IntegratedLoudnessSpeechPercentage

minInclusive ="0" maxInclusive="100"

xs:float 节目的语音内容,以百分比表示。

SamplePeak

必需

xs:float 从重置或上一次清除开始每通道绝对采样峰值。单位为 dBFS。

SamplePeakUnit

fixed="dBFS"

必需

xs:anySimpleType 采样峰值单位。

TruePeak

必需

xs:float 根据 ITU-R BS.1770-2,从重置或上一次清除开始每通道最大实际峰值。单位为 dBTP。

TruePeakUnit

fixed="dBTP"

必需

xs:anySimpleType 实际峰值单位。

架构代码

<?xml version="1.0" encoding="utf-8"?>  
<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata" version="1.2"  
           xmlns="http://schemas.microsoft.com/windowsazure/mediaservices/2013/05/mediaencoder/metadata"  
           targetNamespace="http://schemas.microsoft.com/windowsazure/mediaservices/2013/05/mediaencoder/metadata"  
           elementFormDefault="qualified">  
  <xs:element name="AssetFiles">  
    <xs:annotation>  
      <xs:documentation>Collection of AssetFile entries for the encoding job</xs:documentation>  
    </xs:annotation>  
    <xs:complexType>  
      <xs:sequence>  
        <xs:element name="AssetFile" minOccurs="1" maxOccurs="unbounded">  
          <xs:annotation>  
            <xs:documentation>asset file</xs:documentation>  
          </xs:annotation>  
          <xs:complexType>  
            <xs:sequence>  
              <xs:element name="Sources">  
                <xs:annotation>  
                  <xs:documentation>Collection of input/source media files, that was processed in order to produce this AssetFile</xs:documentation>  
                </xs:annotation>  
                <xs:complexType>  
                  <xs:sequence>  
                    <xs:element name="Source" minOccurs="1" maxOccurs="unbounded">  
                      <xs:annotation>  
                        <xs:documentation>An input/source file used when generating this asset</xs:documentation>  
                      </xs:annotation>  
                      <xs:complexType>  
                        <xs:attribute name="Name" type="xs:string" use="required">  
                          <xs:annotation>  
                            <xs:documentation>input source file name</xs:documentation>  
                          </xs:annotation>  
                        </xs:attribute>  
                      </xs:complexType>  
                    </xs:element>  
                  </xs:sequence>  
                </xs:complexType>  
              </xs:element>  
              <xs:element name="VideoTracks" minOccurs="0">  
                <xs:annotation>  
                  <xs:documentation>Each physical AssetFile can contain in it zero or more video tracks interleaved into an appropriate container format. This is the collection of all those video tracks</xs:documentation>  
                </xs:annotation>  
                <xs:complexType>  
                  <xs:sequence>  
                    <xs:element name="VideoTrack" maxOccurs="unbounded">  
                      <xs:annotation>  
                        <xs:documentation>A specific video track in the parent AssetFile</xs:documentation>  
                      </xs:annotation>  
                      <xs:complexType>  
                        <xs:attribute name="Id" use="required">  
                          <xs:annotation>  
                            <xs:documentation>zero-based index of this video track. Note: this is not necessarily the TrackID as used in an MP4 file</xs:documentation>  
                          </xs:annotation>  
                          <xs:simpleType>  
                            <xs:restriction base="xs:int">  
                              <xs:minInclusive value="0"/>  
                            </xs:restriction>  
                          </xs:simpleType>  
                        </xs:attribute>  
                        <xs:attribute name="FourCC" type="xs:string" use="required">  
                          <xs:annotation>  
                            <xs:documentation>video codec FourCC code</xs:documentation>  
                          </xs:annotation>  
                        </xs:attribute>  
                        <xs:attribute name="Profile" type="xs:string">  
                          <xs:annotation>  
                            <xs:documentation>H264 profile (only appliable for H264 codec)</xs:documentation>  
                          </xs:annotation>  
                        </xs:attribute>  
                        <xs:attribute name="Level" type="xs:string">  
                          <xs:annotation>  
                            <xs:documentation>H264 level (only appliable for H264 codec)</xs:documentation>  
                          </xs:annotation>  
                        </xs:attribute>  
                        <xs:attribute name="Width" use="required">  
                          <xs:annotation>  
                            <xs:documentation>encoded video width in pixels</xs:documentation>  
                          </xs:annotation>  
                          <xs:simpleType>  
                            <xs:restriction base="xs:int">  
                              <xs:minInclusive value="0"/>  
                            </xs:restriction>  
                          </xs:simpleType>  
                        </xs:attribute>  
                        <xs:attribute name="Height" use="required">  
                          <xs:annotation>  
                            <xs:documentation>encoded video height in pixels</xs:documentation>  
                          </xs:annotation>  
                          <xs:simpleType>  
                            <xs:restriction base="xs:int">  
                              <xs:minInclusive value="0"/>  
                            </xs:restriction>  
                          </xs:simpleType>  
                        </xs:attribute>  
                        <xs:attribute name="DisplayAspectRatioNumerator" use="required">  
                          <xs:annotation>  
                            <xs:documentation>video display aspect ratio numerator</xs:documentation>  
                          </xs:annotation>  
                          <xs:simpleType>  
                            <xs:restriction base="xs:double">  
                              <xs:minInclusive value="0"/>  
                            </xs:restriction>  
                          </xs:simpleType>  
                        </xs:attribute>  
                        <xs:attribute name="DisplayAspectRatioDenominator" use="required">  
                          <xs:annotation>  
                            <xs:documentation>video display aspect ratio denominator</xs:documentation>  
                          </xs:annotation>  
                          <xs:simpleType>  
                            <xs:restriction base="xs:double">  
                              <xs:minInclusive value="0"/>  
                            </xs:restriction>  
                          </xs:simpleType>  
                        </xs:attribute>  
                        <xs:attribute name="Framerate" use="required">  
                          <xs:annotation>  
                            <xs:documentation>measured video frame rate in .3f format</xs:documentation>  
                          </xs:annotation>  
                          <xs:simpleType>  
                            <xs:restriction base="xs:decimal">  
                              <xs:minInclusive value="0"/>  
                              <xs:fractionDigits value="3"/>  
                            </xs:restriction>  
                          </xs:simpleType>  
                        </xs:attribute>  
                        <xs:attribute name="TargetFramerate" use="required">  
                          <xs:annotation>  
                            <xs:documentation>preset target video frame rate in .3f format</xs:documentation>  
                          </xs:annotation>  
                          <xs:simpleType>  
                            <xs:restriction base="xs:decimal">  
                              <xs:minInclusive value="0"/>  
                              <xs:fractionDigits value="3"/>  
                            </xs:restriction>  
                          </xs:simpleType>  
                        </xs:attribute>  
                        <xs:attribute name="Bitrate" use="required">  
                          <xs:annotation>  
                            <xs:documentation>average video bit rate in kilobits per second, as calculated from the AssetFile. Counts only the elementary stream payload, and does not include the packaging overhead</xs:documentation>  
                          </xs:annotation>  
                          <xs:simpleType>  
                            <xs:restriction base="xs:int">  
                              <xs:minInclusive value="0"/>  
                            </xs:restriction>  
                          </xs:simpleType>  
                        </xs:attribute>  
                        <xs:attribute name="TargetBitrate" use="required">  
                          <xs:annotation>  
                            <xs:documentation>target average bitrate for this video track, as requested via the encoding preset, in kilobits per second</xs:documentation>  
                          </xs:annotation>  
                          <xs:simpleType>  
                            <xs:restriction base="xs:int">  
                              <xs:minInclusive value="0"/>  
                            </xs:restriction>  
                          </xs:simpleType>  
                        </xs:attribute>  
                        <xs:attribute name="MaxGOPBitrate">  
                          <xs:annotation>  
                            <xs:documentation>Max GOP average bitrate for this video track, in kilobits per second</xs:documentation>  
                          </xs:annotation>  
                          <xs:simpleType>  
                            <xs:restriction base="xs:int">  
                              <xs:minInclusive value="0"/>  
                            </xs:restriction>  
                          </xs:simpleType>  
                        </xs:attribute>  
                      </xs:complexType>  
                    </xs:element>  
                  </xs:sequence>  
                </xs:complexType>  
              </xs:element>  
              <xs:element name="AudioTracks" minOccurs="0">  
                <xs:annotation>  
                  <xs:documentation>each physical AssetFile can contain in it zero or more audio tracks interleaved into an appropriate container format. This is the collection of all those audio tracks</xs:documentation>  
                </xs:annotation>  
                <xs:complexType>  
                  <xs:sequence>  
                    <xs:element name="AudioTrack" maxOccurs="unbounded">  
                      <xs:annotation>  
                        <xs:documentation>a specific audio track in the parent AssetFile</xs:documentation>  
                      </xs:annotation>  
                      <xs:complexType>  
                        <xs:sequence>  
                          <xs:element name="LoudnessMeteringResultParameters" minOccurs="0" maxOccurs="1">  
                            <xs:annotation>  
                              <xs:documentation>Loudness Metering Result Parameters</xs:documentation>  
                            </xs:annotation>  
                            <xs:complexType>  
                              <xs:attribute name="DPLMVersionInformation" type="xs:string">  
                                <xs:annotation>  
                                  <xs:documentation>Dolby Professional Loudness Metering Development Kit Version</xs:documentation>  
                                </xs:annotation>  
                              </xs:attribute>  
                              <xs:attribute name="DialogNormalization" use="required">  
                                <xs:annotation>  
                                  <xs:documentation> DialogNormalization generated through DPLM, required when LoudnessMetering is set</xs:documentation>  
                                </xs:annotation>  
                                <xs:simpleType>  
                                  <xs:restriction base="xs:int">  
                                    <xs:minInclusive value="-31"/>  
                                    <xs:maxInclusive value="-1"/>  
                                  </xs:restriction>  
                                </xs:simpleType>  
                              </xs:attribute>  
                              <xs:attribute name="IntegratedLoudness" use="required">  
                                <xs:annotation>  
                                  <xs:documentation>Integrated loudness</xs:documentation>  
                                </xs:annotation>  
                                <xs:simpleType>  
                                  <xs:restriction base="xs:float">  
                                    <xs:minInclusive value="-70"/>  
                                    <xs:maxInclusive value="10"/>  
                                  </xs:restriction>  
                                </xs:simpleType>  
                              </xs:attribute>  
                              <xs:attribute name="IntegratedLoudnessUnit" use="required" type="xs:string">  
                              </xs:attribute>  
                              <xs:attribute name="IntegratedLoudnessGatingMethod" use="required" type="xs:string">  
                                <xs:annotation>  
                                  <xs:documentation>Gating identifier</xs:documentation>  
                                </xs:annotation>  
                              </xs:attribute>  
                              <xs:attribute name="IntegratedLoudnessSpeechPercentage">  
                                <xs:annotation>  
                                  <xs:documentation>Speech content over the program, as a percentage.</xs:documentation>  
                                </xs:annotation>  
                                <xs:simpleType>  
                                  <xs:restriction base="xs:float">  
                                    <xs:minInclusive value="0"/>  
                                    <xs:maxInclusive value="100"/>  
                                  </xs:restriction>  
                                </xs:simpleType>  
                              </xs:attribute>  
                              <xs:attribute name="SamplePeak" use="required" type="xs:float">  
                                <xs:annotation>  
                                  <xs:documentation>Peak absolute sample value, since reset or since it was last cleared, per channel.  Units are dBFS.</xs:documentation>  
                                </xs:annotation>  
                              </xs:attribute>  
                              <xs:attribute name="SamplePeakUnit" use="required" fixed="dBFS">  
                              </xs:attribute>  
                              <xs:attribute name="TruePeak" use="required" type="xs:float">  
                                <xs:annotation>  
                                  <xs:documentation>Maximum True Peak value, as per ITU-R BS.1770-2, since reset or since it was last cleared, per channel.  Units are dBTP.</xs:documentation>  
                                </xs:annotation>  
                              </xs:attribute>  
                              <xs:attribute name="TruePeakUnit" use="required" fixed="dBTP">  
                              </xs:attribute>  
                            </xs:complexType>  
                          </xs:element>  
                        </xs:sequence>  
                        <xs:attribute name="Id" use="required">  
                          <xs:annotation>  
                            <xs:documentation>zero-based index of this audio track. Note: this is not necessarily the TrackID as used in an MP4 file</xs:documentation>  
                          </xs:annotation>  
                          <xs:simpleType>  
                            <xs:restriction base="xs:int">  
                              <xs:minInclusive value="0"/>  
                            </xs:restriction>  
                          </xs:simpleType>  
                        </xs:attribute>  
                        <xs:attribute name="Codec" type="xs:string">  
                          <xs:annotation>  
                            <xs:documentation>audio track codec string</xs:documentation>  
                          </xs:annotation>  
                        </xs:attribute>  
                        <xs:attribute name="EncoderVersion" type="xs:string">  
                          <xs:annotation>  
                            <xs:documentation>optional encoder version string, required for EAC3</xs:documentation>  
                          </xs:annotation>  
                        </xs:attribute>  
                        <xs:attribute name="Channels" use="required">  
                          <xs:annotation>  
                            <xs:documentation>number of audio channels</xs:documentation>  
                          </xs:annotation>  
                          <xs:simpleType>  
                            <xs:restriction base="xs:int">  
                              <xs:minInclusive value="0"/>  
                            </xs:restriction>  
                          </xs:simpleType>  
                        </xs:attribute>  
                        <xs:attribute name="SamplingRate" use="required">  
                          <xs:annotation>  
                            <xs:documentation>audio sampling rate in samples/sec or Hz</xs:documentation>  
                          </xs:annotation>  
                          <xs:simpleType>  
                            <xs:restriction base="xs:int">  
                              <xs:minInclusive value="0"/>  
                            </xs:restriction>  
                          </xs:simpleType>  
                        </xs:attribute>  
                        <xs:attribute name="Bitrate" use="required">  
                          <xs:annotation>  
                            <xs:documentation>average audio bit rate in bits per second, as calculated from the AssetFile. Counts only the elementary stream payload, and does not include the packaging overhead</xs:documentation>  
                          </xs:annotation>  
                          <xs:simpleType>  
                            <xs:restriction base="xs:int">  
                              <xs:minInclusive value="0"/>  
                            </xs:restriction>  
                          </xs:simpleType>  
                        </xs:attribute>  
                        <xs:attribute name="BitsPerSample" use="required">  
                          <xs:annotation>  
                            <xs:documentation>Bits per sample for the wFormatTag format type</xs:documentation>  
                          </xs:annotation>  
                          <xs:simpleType>  
                            <xs:restriction base="xs:int">  
                              <xs:minInclusive value="0"/>  
                            </xs:restriction>  
                          </xs:simpleType>  
                        </xs:attribute>  
                      </xs:complexType>  
                    </xs:element>  
                  </xs:sequence>  
                </xs:complexType>  
              </xs:element>  
            </xs:sequence>  
            <xs:attribute name="Name" type="xs:string" use="required">  
              <xs:annotation>  
                <xs:documentation>the media asset file name</xs:documentation>  
              </xs:annotation>  
            </xs:attribute>  
            <xs:attribute name="Size" use="required">  
              <xs:annotation>  
                <xs:documentation>size of file in bytes</xs:documentation>  
              </xs:annotation>  
              <xs:simpleType>  
                <xs:restriction base="xs:long">  
                  <xs:minInclusive value="0"/>  
                </xs:restriction>  
              </xs:simpleType>  
            </xs:attribute>  
            <xs:attribute name="Duration" use="required">  
              <xs:annotation>  
                <xs:documentation>content play back duration</xs:documentation>  
              </xs:annotation>  
              <xs:simpleType>  
                <xs:restriction base="xs:duration"/>  
              </xs:simpleType>  
            </xs:attribute>  
          </xs:complexType>  
        </xs:element>  
      </xs:sequence>  
    </xs:complexType>  
  </xs:element>  
</xs:schema>  

XML 示例

以下是输出元数据文件示例。

<AssetFiles xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema"   
            xmlns="http://schemas.microsoft.com/windowsazure/mediaservices/2013/05/mediaencoder/metadata">  
  <AssetFile Name="BigBuckBunny_H264_3400kbps_AAC_und_ch2_96kbps.mp4" Size="4646283" Duration="PT8.4288444S">  
    <Sources>  
      <Source Name="BigBuckBunny.mp4"/>  
    </Sources>  
    <VideoTracks>  
      <VideoTrack Id="0" FourCC="AVC1" Profile="Main" Level="3.2" Width="1280" Height="720" DisplayAspectRatioNumerator="16" DisplayAspectRatioDenominator="9" Framerate="23.974" TargetFramerate="23.974" Bitrate="4250" TargetBitrate="3400" MaxGOPBitrate="5514"/>  
    </VideoTracks>  
    <AudioTracks>  
      <AudioTrack Id="0" Codec="AacLc" Channels="2" SamplingRate="44100" Bitrate="93" BitsPerSample="16"/>  
    </AudioTracks>  
  </AssetFile>  
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