关于云计算:视频剪辑中生成花字特效的代码案例详述

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本文为阿里云智能媒体服务 IMS「云端智能剪辑」实际指南第四期，通过使用官网提供的花字模版或自定义设计花字，实现丰盛、精美的花字特效视频剪辑。

昱尘|作者

在视频前期剪辑中，“花字”是一种特地的存在。

通过应用适宜视频的花字，不仅能够丰盛视频内容，还能够让视频传播的信息更加容易让用户承受，加深观众对于视频内容的印象。

对于做短视频营销场景的客户来说，花字更是起着至关重要的作用，不仅能够加强视频传播信息的能力，还能够减少视频的成果精美度。

视频中罕用的花字，个别会蕴含几个因素：文字色彩、纹理、字体、多层描边、多层暗影以及背景及发光成果 等。

本文次要介绍如何通过应用智能媒体服务 IMS「云端智能剪辑」减少花字，将从「如何应用官网花字」以及「如何自定义设计花字」两方面来介绍弱小的花字能力。本文成果实现较为简单，将视频地址换成您本人的 oss 地址，即能够实现示例成果。

咱们参考市面上比拟支流的营销类短视频剪辑模式，以上面这个流程作为 demo 展现的模版。

应用一张图片作为视频封面，减少主题目、副标题以及形容文字；
应用三个横屏拍摄的视频作为主体内容，输入为竖屏视频（不便手机观看），高低减少背景含糊成果；
每一个视频或者图片，对应一段 TTS 口播，让视频或者图片与口播对齐，保障视频的流畅性；
TTS 口播同时搭配 ASR 字幕。

依照下面这个模版，咱们先看一个不应用任何简单字幕成果剪辑成的视频成果：

https://v.qq.com/x/page/p3502q8vcef.html

通过观看视频发现，该视频中的字幕存在一些问题：

l 视频背景比较复杂，在字幕色彩和视频底色比拟靠近时，会导致字幕不够清晰；

l 字幕比拟单调乏味，视频内容不够粗劣，容易让用户产生视觉疲劳，升高流传力；

l 字幕成果不够突出亮眼，无奈一眼就让用户把握视频要害信息。

原始字幕 Timeline：

{
  "VideoTracks": [{
    "VideoTrackClips": [{
        "MediaUrl": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/cover.jpg",
        "Width": 1,
        "Height": 1,
        "Type": "Image",
        "AdaptMode": "Cover",
        "ReferenceClipId": "speech_1",
        "Effects": [{
            "Type": "Text",
            "Font": "HappyZcool-2016",
            "Content": "敌人聚餐",
            "Y": 0.5,
            "FontSize": 80,
            "Angle": "30",
            "Alignment": "TopCenter",
            "FontColor": "#ffffff"
          },
          {
            "Type": "Text",
            "Font": "HappyZcool-2016",
            "Content": "同学聚会",
            "Y": 0.6,
            "FontSize": 80,
            "Angle": "30",
            "Alignment": "TopCenter",
            "FontColor": "#ffffff"
          },
          {
            "Type": "Text",
            "Font": "HappyZcool-2016",
            "Content": "家人团圆",
            "Y": 0.7,
            "FontSize": 80,
            "Angle": "30",
            "Alignment": "TopCenter",
            "FontColor": "#ffffff"
          },
          {
            "Type": "Text",
            "Font": "HappyZcool-2016",
            "Content": "共事团建",
            "Y": 0.8,
            "FontSize": 80,
            "Angle": "30",
            "Alignment": "TopCenter",
            "FontColor": "#ffffff"
          }
        ]
      },
      {
        "Comment": "火锅",
        "MediaUrl": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/%E7%81%AB%E9%94%85.mp4",
        "Y": 0.3,
        "Width": 1080,
        "Height": 608,
        "AdaptMode": "Cover",
        "Effects": [{
          "Type": "Background",
          "SubType": "Blur",
          "Radius": 0.1
        }],
        "ReferenceClipId": "speech_2"
      },
      {
        "Comment": "烤羊肉串",
        "MediaUrl": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/%E7%83%A4%E7%BE%8A%E8%82%89%E4%B8%B2.mp4",
        "Y": 0.3,
        "Width": 1080,
        "Height": 608,
        "AdaptMode": "Cover",
        "Effects": [{
          "Type": "Background",
          "SubType": "Blur",
          "Radius": 0.1
        }],
        "ReferenceClipId": "speech_3"
      },
      {
        "Comment": "大鱿鱼",
        "MediaUrl": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/%E7%83%A4%E9%B1%BF%E9%B1%BC.mp4",
        "Y": 0.3,
        "Width": 1080,
        "Height": 608,
        "AdaptMode": "Cover",
        "Effects": [{
          "Type": "Background",
          "SubType": "Blur",
          "Radius": 0.1
        }],
        "ReferenceClipId": "speech_4"
      },
      {
        "Comment": "陈腐蔬菜",
        "MediaUrl": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/%E8%94%AC%E8%8F%9C.mp4",
        "Y": 0.3,
        "Width": 1080,
        "Height": 608,
        "AdaptMode": "Cover",
        "Effects": [{
          "Type": "Background",
          "SubType": "Blur",
          "Radius": 0.1
        }],
        "ReferenceClipId": "speech_5"
      }
    ]
  }],
  "AudioTracks": [{
    "AudioTrackClips": [{
        "Type": "AI_TTS",
        "Content": "周末就来阿云美食城吧",
        "Voice": "zhimi_emo",
        "ClipId": "speech_1"
      },
      {
        "Type": "AI_TTS",
        "Content": "这里有入口醇香的老北京火锅！",
        "Voice": "zhimi_emo",
        "Effects": [{
          "Type": "AI_ASR",
          "Font": "HappyZcool-2016",
          "Alignment": "TopCenter",
          "Y": 0.65,
          "FontSize": 80,
          "FontColor": "#ffffff"
        }],
        "ClipId": "speech_2"
      },
      {
        "Type": "AI_TTS",
        "Content": "这里有香喷喷的烤羊肉串！",
        "Voice": "zhimi_emo",
        "Effects": [{
          "Type": "AI_ASR",
          "Font": "HappyZcool-2016",
          "Alignment": "TopCenter",
          "Y": 0.65,
          "FontSize": 80,
          "FontColor": "#ffffff"
        }],
        "ClipId": "speech_3"
      },
      {
        "Type": "AI_TTS",
        "Content": "这里有无比鲜嫩的大鱿鱼！",
        "Voice": "zhimi_emo",
        "Effects": [{
          "Type": "AI_ASR",
          "Font": "HappyZcool-2016",
          "Alignment": "TopCenter",
          "Y": 0.65,
          "FontSize": 80,
          "FontColor": "#ffffff"
        }],
        "ClipId": "speech_4"
      },
      {
        "Type": "AI_TTS",
        "Content": "还有各种陈腐蔬菜等你来品味~",
        "Voice": "zhimi_emo",
        "Effects": [{
          "Type": "AI_ASR",
          "Font": "HappyZcool-2016",
          "Alignment": "TopCenter",
          "Y": 0.65,
          "FontSize": 80,
          "FontColor": "#ffffff"
        }],
        "ClipId": "speech_5"
      }
    ]
  }],
  "SubtitleTracks": [{
    "SubtitleTrackClips": [{
        "Comment": "主题目",
        "Type": "Text",
        "Font": "HappyZcool-2016",
        "Y": 0.05,
        "FontSize": 200,
        "Content": "阿云美食城",
        "FontColor": "#CFFAFF",
        "SizeRequestType": "Nominal",
        "AdaptMode": "AutoScale",
        "Spacing": 3,
        "Alignment": "TopCenter"
      },
      {
        "Comment": "副标题",
        "Type": "Text",
        "Font": "HappyZcool-2016",
        "Y": 0.2,
        "FontSize": 100,
        "Content": "味蕾盛宴",
        "FontColor": "#CFFAFF",
        "SizeRequestType": "Nominal",
        "AdaptMode": "AutoScale",
        "Spacing": 3,
        "Alignment": "TopCenter"
      }
    ]
  }]
}

为了解决上述原始字幕文字不显著以及成果比拟差等一些问题，咱们能够用 IMS 中已集成的官网花字来丰盛视频内容。阿里云智能媒体服务新增 32 套高级花字。

花字成果示例：

https://help.aliyun.com/document_detail/449561.html

能够简略设置花字 Id 来一键式实现多种花字成果。应用官网花字对视频内容进行丰盛的成果如下：

https://v.qq.com/x/page/r3502mwbj8h.html

比照没有配置花字的原始字幕版本的成果，能够发现：应用官网花字制作的营销短视频，不再会因为视频底色变动而让人看不清字幕，从而更加能抓住观众的注意力，加深印象。

设置花字的形式也非常简便，间接设置一个花字 Id 即可，比方 ”EffectColorStyle”: “CS0002-000011″，如果须要批改文字字体，能够应用自定义字体性能或者应用咱们的官网内置字体库。

官网花字 Timeline：

{
  "VideoTracks": [{
    "VideoTrackClips": [{
        "MediaUrl": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/cover.jpg",
        "Width": 1,
        "Height": 1,
        "Type": "Image",
        "AdaptMode": "Cover",
        "ReferenceClipId": "speech_1",
        "Effects": [{
            "Type": "Text",
            "Content": "敌人聚餐",
            "Y": 0.5,
            "FontSize": 80,
            "Angle": "30",
            "Alignment": "TopCenter",
            "EffectColorStyle": "CS0001-000015"
          },
          {
            "Type": "Text",
            "Content": "同学聚会",
            "Y": 0.6,
            "FontSize": 80,
            "Angle": "30",
            "Alignment": "TopCenter",
            "EffectColorStyle": "CS0001-000015"
          },
          {
            "Type": "Text",
            "Content": "家人团圆",
            "Y": 0.7,
            "FontSize": 80,
            "Angle": "30",
            "Alignment": "TopCenter",
            "EffectColorStyle": "CS0001-000015"
          },
          {
            "Type": "Text",
            "Content": "共事团建",
            "Y": 0.8,
            "FontSize": 80,
            "Angle": "30",
            "Alignment": "TopCenter",
            "EffectColorStyle": "CS0001-000015"
          }
        ]
      },
      {
        "Comment": "火锅",
        "MediaUrl": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/%E7%81%AB%E9%94%85.mp4",
        "Y": 0.3,
        "Width": 1080,
        "Height": 608,
        "AdaptMode": "Cover",
        "Effects": [{
          "Type": "Background",
          "SubType": "Blur",
          "Radius": 0.1
        }],
        "ReferenceClipId": "speech_2"
      },
      {
        "Comment": "烤羊肉串",
        "MediaUrl": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/%E7%83%A4%E7%BE%8A%E8%82%89%E4%B8%B2.mp4",
        "Y": 0.3,
        "Width": 1080,
        "Height": 608,
        "AdaptMode": "Cover",
        "Effects": [{
          "Type": "Background",
          "SubType": "Blur",
          "Radius": 0.1
        }],
        "ReferenceClipId": "speech_3"
      },
      {
        "Comment": "大鱿鱼",
        "MediaUrl": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/%E7%83%A4%E9%B1%BF%E9%B1%BC.mp4",
        "Y": 0.3,
        "Width": 1080,
        "Height": 608,
        "AdaptMode": "Cover",
        "Effects": [{
          "Type": "Background",
          "SubType": "Blur",
          "Radius": 0.1
        }],
        "ReferenceClipId": "speech_4"
      },
      {
        "Comment": "陈腐蔬菜",
        "MediaUrl": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/%E8%94%AC%E8%8F%9C.mp4",
        "Y": 0.3,
        "Width": 1080,
        "Height": 608,
        "AdaptMode": "Cover",
        "Effects": [{
          "Type": "Background",
          "SubType": "Blur",
          "Radius": 0.1
        }],
        "ReferenceClipId": "speech_5"
      }
    ]
  }],
  "AudioTracks": [{
    "AudioTrackClips": [{
        "Type": "AI_TTS",
        "Content": "周末就来阿云美食城吧",
        "Voice": "zhimi_emo",
        "ClipId": "speech_1"
      },
      {
        "Type": "AI_TTS",
        "Content": "这里有入口醇香的老北京火锅！",
        "Voice": "zhimi_emo",
        "Effects": [{
          "Type": "AI_ASR",
          "Font": "KaiTi",
          "Spacing": 2,
          "Alignment": "TopCenter",
          "Y": 0.65,
          "FontSize": 70,
          "AdaptMode": "AutoWrap",
          "EffectColorStyle": "CS0001-000014"
        }],
        "ClipId": "speech_2"
      },
      {
        "Type": "AI_TTS",
        "Content": "这里有香喷喷的烤羊肉串！",
        "Voice": "zhimi_emo",
        "Effects": [{
          "Type": "AI_ASR",
          "Font": "KaiTi",
          "Spacing": 2,
          "Alignment": "TopCenter",
          "Y": 0.65,
          "FontSize": 70,
          "AdaptMode": "AutoWrap",
          "EffectColorStyle": "CS0001-000014"
        }],
        "ClipId": "speech_3"
      },
      {
        "Type": "AI_TTS",
        "Content": "这里有无比鲜嫩的大鱿鱼！",
        "Voice": "zhimi_emo",
        "Effects": [{
          "Type": "AI_ASR",
          "Font": "KaiTi",
          "Spacing": 2,
          "Alignment": "TopCenter",
          "Y": 0.65,
          "FontSize": 70,
          "AdaptMode": "AutoWrap",
          "EffectColorStyle": "CS0001-000014"
        }],
        "ClipId": "speech_4"
      },
      {
        "Type": "AI_TTS",
        "Content": "还有各种陈腐蔬菜等你来品味~",
        "Voice": "zhimi_emo",
        "Effects": [{
          "Type": "AI_ASR",
          "Font": "KaiTi",
          "Spacing": 2,
          "Alignment": "TopCenter",
          "Y": 0.65,
          "FontSize": 70,
          "AdaptMode": "AutoWrap",
          "EffectColorStyle": "CS0001-000014"
        }],
        "ClipId": "speech_5"
      }
    ]
  }],
  "SubtitleTracks": [{
    "SubtitleTrackClips": [{
        "Comment": "主题目",
        "Type": "Text",
        "Y": 0.05,
        "FontSize": 200,
        "Content": "阿云美食城",
        "FontColor": "#CFFAFF",
        "SizeRequestType": "Nominal",
        "AdaptMode": "AutoScale",
        "Spacing": 2,
        "Alignment": "TopCenter",
        "EffectColorStyle": "CS0002-000003"
      },
      {
        "Comment": "副标题",
        "Type": "Text",
        "Y": 0.2,
        "FontSize": 100,
        "Content": "味蕾盛宴",
        "FontColor": "#CFFAFF",
        "SizeRequestType": "Nominal",
        "AdaptMode": "AutoScale",
        "Spacing": 2,
        "Alignment": "TopCenter",
        "EffectColorStyle": "CS0002-000011"
      }
    ]
  }]
}

当官网花字仍无奈满足视频制作成果的需要，咱们也反对自定义花字性能。您能够灵便组织多层描边成果，多层暗影成果，咱们也反对设置高斯含糊，实现字幕发光成果。

在具体 Timeline 设置前，咱们先来看一下自定义设计花字的成片成果。

https://v.qq.com/x/page/h3502f25vuk.html

自定义花字的 API 协定：

https://help.aliyun.com/document_detail/198823.html

首先，咱们来看一个多层描边的花字示例。咱们以官网花字 CS0001-000016 这个成果为例。

CS0001-000016 花字

仔细观察，能够晓得这个花字是通过从外到内叠加色彩逐步变深的多层描边来实现的，通过在 SubtitleEffects 中设置多层色彩逐步变深的描边成果即可实现这个花字。

Color 字段为 RGB 色彩值，Type 设置为 Outline 示意描边，Bord、Shift 设置成 0 - 1 的小数时，示意绝对字体大小的值，理论渲染时会乘以 FontSize 值，这样即可实现不同字体大小下，花字成果根本保持一致。

SubtitleEffects 是一个 JSON 数组，越靠前的在渲染时会越在底层，所以底层描边 Bord 须要比下层描边 Bord 设置的稍大一些，否则底层的描边会被下层的描边遮住，从而失去成果。

该花字的文字色彩为红色，设置字体为站酷高兴体，据此能够设置字幕轨道参数为如下。

CS0001-000016 花字 SubtitleTrackClips 参数解析：

{
  "Type": "Text",
  "FontSize": 130,
  "Content": "阿里云剪辑",
  "Spacing": 2,
  "Alignment": "TopCenter",
  "Font": "HappyZcool-2016",
  "FontColor": "#ffffff",
  "SubtitleEffects": [{
    "Color": "#c6f295",
    "Type": "Outline",
    "Blur": 0.0,
    "XBord": 0.16,
    "YBord": 0.16,
    "XShift": 0.0,
    "YShift": 0.0,
    "Opacity": 1.0
  }, {
    "Color": "#99dda3",
    "Type": "Outline",
    "Blur": 0.0,
    "XBord": 0.12,
    "YBord": 0.12,
    "XShift": 0.0,
    "YShift": 0.0,
    "Opacity": 1.0
  }, {
    "Color": "#66c19c",
    "Type": "Outline",
    "Blur": 0.0,
    "XBord": 0.08,
    "YBord": 0.08,
    "XShift": 0.0,
    "YShift": 0.0,
    "Opacity": 1.0
  }, {
    "Color": "#138b8a",
    "Type": "Outline",
    "Blur": 0.0,
    "XBord": 0.04,
    "YBord": 0.04,
    "XShift": 0.0,
    "YShift": 0.0,
    "Opacity": 1.0
  }]
}

咱们再来看如何自定义 实现字幕发光成果。

CS0002-000015 花字

咱们以 CS0002-000015 这个花字成果为例。认真看，这个花字整体是由两局部组成的，一部分为底部的文字投影，一部分为下层的文字主体。

再细细察看，能够发现，文字投影局部最外是由一层淡蓝色发光成果形成，两头是一层描边，描边两头蕴含深蓝色的文字实体。发光的成果咱们是通过给暗影减少含糊成果来实现。

下层文字主体局部，是由一个层描边蕴含文字主体的轮廓形成，文字主体局部有半透明成果，所以该花字成果解析的字幕轨道参数如下：

CS0002-000015 花字 SubtitleTrackClips 参数解析：

{
  "Type": "Text",
  "FontSize": 130,
  "Content": "阿里云剪辑",
  "Y": 0.3,
  "Spacing": 2,
  "SizeRequestType": "Nominal",
  "Alignment": "TopCenter",
  "Font": "HappyZcool-2016",
  "FontColor": "#00e6ff",
  "FontColorOpacity": 0.5607843137254902,
  "SubtitleEffects": [{
      "Color": "#1be6ff",
      "Type": "Shadow",
      "Blur": 0.14,
      "XBord": 0.02,
      "YBord": 0.02,
      "XShift": 0.04,
      "YShift": 0.04,
      "Opacity": 1.0
    },
    {
      "Color": "#008c9e",
      "Type": "Shadow",
      "Blur": 0.0,
      "XBord": 0.04,
      "YBord": 0.04,
      "XShift": 0.04,
      "YShift": 0.04,
      "Opacity": 1.0
    },
    {
      "Color": "#29e6ff",
      "Type": "Outline",
      "Blur": 0.0,
      "XBord": 0.02,
      "YBord": 0.02,
      "XShift": 0.04,
      "YShift": 0.04,
      "Opacity": 1.0
    },
    {
      "Color": "#ffffff",
      "Type": "Outline",
      "Blur": 0.0,
      "XBord": 0.02,
      "YBord": 0.02,
      "XShift": 0.0,
      "YShift": 0.0,
      "Opacity": 1.0
    }
  ]
}

依照下面这个自定义花字的办法，咱们能够实现任意想实现的花字成果。下面这个探店营销短视频的 timeline 就这样实现进去了。

自定义花字营销视频 Timeline：

{
  "VideoTracks": [{
    "VideoTrackClips": [{
        "MediaUrl": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/cover.jpg",
        "Width": 1,
        "Height": 1,
        "Type": "Image",
        "AdaptMode": "Cover",
        "ReferenceClipId": "speech_1",
        "Effects": [{
            "Type": "Text",
            "Content": "敌人聚餐",
            "Y": 0.5,
            "FontSize": 100,
            "Angle": "30",
            "Alignment": "TopCenter",
            "FontColor": "#FDC219",
            "FontURL": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/AliHYAiHei.ttf",
            "SubtitleEffects": [{
                "Type": "Outline",
                "Bord": 0.06,
                "Color": "#FDFDFD"
              },
              {
                "Type": "Outline",
                "Bord": 0.02,
                "Color": "#040404"
              }
            ]
          },
          {
            "Type": "Text",
            "Content": "同学聚会",
            "Y": 0.6,
            "FontSize": 100,
            "Angle": "30",
            "Alignment": "TopCenter",
            "FontColor": "#FDC219",
            "FontURL": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/AliHYAiHei.ttf",
            "SubtitleEffects": [{
                "Type": "Outline",
                "Bord": 0.06,
                "Color": "#FDFDFD"
              },
              {
                "Type": "Outline",
                "Bord": 0.02,
                "Color": "#040404"
              }
            ]
          },
          {
            "Type": "Text",
            "Content": "家人团圆",
            "Y": 0.7,
            "FontSize": 100,
            "Angle": "30",
            "Alignment": "TopCenter",
            "FontColor": "#FDC219",
            "FontURL": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/AliHYAiHei.ttf",
            "SubtitleEffects": [{
                "Type": "Outline",
                "Bord": 0.06,
                "Color": "#FDFDFD"
              },
              {
                "Type": "Outline",
                "Bord": 0.02,
                "Color": "#040404"
              }
            ]
          },
          {
            "Type": "Text",
            "Content": "共事团建",
            "Y": 0.8,
            "FontSize": 100,
            "Angle": "30",
            "Alignment": "TopCenter",
            "FontColor": "#FDC219",
            "FontURL": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/AliHYAiHei.ttf",
            "SubtitleEffects": [{
                "Type": "Outline",
                "Bord": 0.06,
                "Color": "#FDFDFD"
              },
              {
                "Type": "Outline",
                "Bord": 0.02,
                "Color": "#040404"
              }
            ]
          }
        ]
      },
      {
        "Comment": "火锅",
        "MediaUrl": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/%E7%81%AB%E9%94%85.mp4",
        "Y": 0.3,
        "Width": 1080,
        "Height": 608,
        "AdaptMode": "Cover",
        "Effects": [{
          "Type": "Background",
          "SubType": "Blur",
          "Radius": 0.1
        }],
        "ReferenceClipId": "speech_2"
      },
      {
        "Comment": "烤羊肉串",
        "MediaUrl": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/%E7%83%A4%E7%BE%8A%E8%82%89%E4%B8%B2.mp4",
        "Y": 0.3,
        "Width": 1080,
        "Height": 608,
        "AdaptMode": "Cover",
        "Effects": [{
          "Type": "Background",
          "SubType": "Blur",
          "Radius": 0.1
        }],
        "ReferenceClipId": "speech_3"
      },
      {
        "Comment": "大鱿鱼",
        "MediaUrl": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/%E7%83%A4%E9%B1%BF%E9%B1%BC.mp4",
        "Y": 0.3,
        "Width": 1080,
        "Height": 608,
        "AdaptMode": "Cover",
        "Effects": [{
          "Type": "Background",
          "SubType": "Blur",
          "Radius": 0.1
        }],
        "ReferenceClipId": "speech_4"
      },
      {
        "Comment": "陈腐蔬菜",
        "MediaUrl": "https://your-bucket.oss-cn-shanghai.aliyuncs.com/%E8%94%AC%E8%8F%9C.mp4",
        "Y": 0.3,
        "Width": 1080,
        "Height": 608,
        "AdaptMode": "Cover",
        "Effects": [{
          "Type": "Background",
          "SubType": "Blur",
          "Radius": 0.1
        }],
        "ReferenceClipId": "speech_5"
      }
    ]
  }],
  "AudioTracks": [{
    "AudioTrackClips": [{
        "Type": "AI_TTS",
        "Content": "周末就来阿云美食城吧",
        "Voice": "zhimi_emo",
        "ClipId": "speech_1"
      },
      {
        "Type": "AI_TTS",
        "Content": "这里有入口醇香的老北京火锅！",
        "Voice": "zhimi_emo",
        "Effects": [{
          "Type": "AI_ASR",
          "Font": "KaiTi",
          "Spacing": 2,
          "Alignment": "TopCenter",
          "Y": 0.65,
          "FontSize": 70,
          "AdaptMode": "AutoWrap",
          "FontColor": "#FFFFFF",
          "SubtitleEffects": [{
              "Color": "#0420B6",
              "Type": "Shadow",
              "XBord": 0.07,
              "YBord": 0.07,
              "YShift": 0.06
            },
            {
              "Color": "#F2213F",
              "Type": "Shadow",
              "XBord": 0.07,
              "YBord": 0.07,
              "YShift": 0.03
            },
            {
              "Color": "#000000",
              "Type": "Shadow",
              "XShift": 0.01,
              "YShift": 0.01
            },
            {
              "Color": "#000000",
              "Type": "Outline",
              "XBord": 0.01,
              "YBord": 0.01
            }
          ]
        }],
        "ClipId": "speech_2"
      },
      {
        "Type": "AI_TTS",
        "Content": "这里有香喷喷的烤羊肉串！",
        "Voice": "zhimi_emo",
        "Effects": [{
          "Type": "AI_ASR",
          "Font": "KaiTi",
          "Spacing": 2,
          "Alignment": "TopCenter",
          "Y": 0.65,
          "FontSize": 70,
          "AdaptMode": "AutoWrap",
          "FontColor": "#FFFFFF",
          "SubtitleEffects": [{
              "Color": "#0420B6",
              "Type": "Shadow",
              "XBord": 0.07,
              "YBord": 0.07,
              "YShift": 0.06
            },
            {
              "Color": "#F2213F",
              "Type": "Shadow",
              "XBord": 0.07,
              "YBord": 0.07,
              "YShift": 0.03
            },
            {
              "Color": "#000000",
              "Type": "Shadow",
              "XShift": 0.01,
              "YShift": 0.01
            },
            {
              "Color": "#000000",
              "Type": "Outline",
              "XBord": 0.01,
              "YBord": 0.01
            }
          ]
        }],
        "ClipId": "speech_3"
      },
      {
        "Type": "AI_TTS",
        "Content": "这里有无比鲜嫩的大鱿鱼！",
        "Voice": "zhimi_emo",
        "Effects": [{
          "Type": "AI_ASR",
          "Font": "KaiTi",
          "Spacing": 2,
          "Alignment": "TopCenter",
          "Y": 0.65,
          "FontSize": 70,
          "AdaptMode": "AutoWrap",
          "FontColor": "#FFFFFF",
          "SubtitleEffects": [{
              "Color": "#0420B6",
              "Type": "Shadow",
              "XBord": 0.07,
              "YBord": 0.07,
              "YShift": 0.06
            },
            {
              "Color": "#F2213F",
              "Type": "Shadow",
              "XBord": 0.07,
              "YBord": 0.07,
              "YShift": 0.03
            },
            {
              "Color": "#000000",
              "Type": "Shadow",
              "XShift": 0.01,
              "YShift": 0.01
            },
            {
              "Color": "#000000",
              "Type": "Outline",
              "XBord": 0.01,
              "YBord": 0.01
            }
          ]
        }],
        "ClipId": "speech_4"
      },
      {
        "Type": "AI_TTS",
        "Content": "还有各种陈腐蔬菜等你来品味~",
        "Voice": "zhimi_emo",
        "Effects": [{
          "Type": "AI_ASR",
          "Font": "KaiTi",
          "Spacing": 2,
          "Alignment": "TopCenter",
          "Y": 0.65,
          "FontSize": 70,
          "AdaptMode": "AutoWrap",
          "FontColor": "#FFFFFF",
          "SubtitleEffects": [{
              "Color": "#0420B6",
              "Type": "Shadow",
              "XBord": 0.07,
              "YBord": 0.07,
              "YShift": 0.06
            },
            {
              "Color": "#F2213F",
              "Type": "Shadow",
              "XBord": 0.07,
              "YBord": 0.07,
              "YShift": 0.03
            },
            {
              "Color": "#000000",
              "Type": "Shadow",
              "XShift": 0.01,
              "YShift": 0.01
            },
            {
              "Color": "#000000",
              "Type": "Outline",
              "XBord": 0.01,
              "YBord": 0.01
            }
          ]
        }],
        "ClipId": "speech_5"
      }
    ]
  }],
  "SubtitleTracks": [{
    "SubtitleTrackClips": [{
        "Comment": "主题目",
        "Type": "Text",
        "Y": 0.05,
        "FontSize": 200,
        "Content": "阿云美食城",
        "Spacing": 2,
        "SizeRequestType": "Nominal",
        "Alignment": "TopCenter",
        "Font": "HappyZcool-2016",
        "FontColor": "#F688AA",
        "SubtitleEffects": [{
            "Color": "#F688AA",
            "Type": "Shadow",
            "Blur": 0.30,
            "XBord": 0.15,
            "YBord": 0.15
          },
          {
            "Color": "#FFFFA0",
            "Type": "Shadow",
            "Blur": 0.08,
            "XBord": 0.08,
            "YBord": 0.08
          },
          {
            "Color": "#A33952",
            "Type": "Shadow",
            "XBord": 0,
            "YBord": 0,
            "XShift": 0.04,
            "Opacity": 1.0
          },
          {
            "Color": "#F5D2CC",
            "Type": "Shadow",
            "XBord": 0,
            "YBord": 0,
            "XShift": -0.04,
            "Opacity": 1.0
          }
        ]
      },
      {
        "Comment": "副标题",
        "Type": "Text",
        "Y": 0.2,
        "FontSize": 100,
        "Content": "味蕾盛宴",
        "SizeRequestType": "Nominal",
        "Spacing": 2,
        "Alignment": "TopCenter",
        "Font": "HappyZcool-2016",
        "FontColor": "#F9FAFA",
        "SubtitleEffects": [{
            "Color": "#F4DF50",
            "Type": "Shadow",
            "Blur": 15,
            "XBord": 7,
            "YBord": 7
          },
          {
            "Color": "#464120",
            "Type": "Outline",
            "XBord": 2,
            "YBord": 2
          }
        ]
      }
    ]
  }]
}

以上视频制作中，没有任何工夫截取的参数设置，通过轨道对齐性能，实现口播和视频绝对齐，实现全流程自动化剪辑。轨道对齐示例文档请参考：

https://help.aliyun.com/document_detail/2507542.html

智能媒体服务 IMS「云端智能剪辑」是基于云计算和人工智能技术的视频剪辑生产服务，能为用户提供直播剪辑、视频剪辑、模版工厂、数字人制作等外围性能，并可应用 AI 辅助剪辑生产。该产品可广泛应用于互联网、文化传媒、广告营销、教育金融等行业，满足企业进行规模、高效、便捷、智能的视频内容生产需要。

理解更多产品信息，请点击阿里云云端智能剪辑：https://www.aliyun.com/product/apsaravideo/ice/editor?spm=517…

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