视频剪辑中生成花字特效的代码案例详述

本文为阿里云智能媒体服务IMS「云端智能剪辑」实践指南第四期，通过运用官方提供的花字模版或自定义设计花字，完成丰富、精美的花字特效视频剪辑。

昱尘｜作者

在视频后期剪辑中，“花字”是一种特别的存在。

通过使用适合视频的花字，不仅可以丰富视频内容，还可以让视频传达的信息更加容易让用户接受，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，不仅可以增强视频传达信息的能力，还可以增加视频的效果精美度。

视频中常用的花字，一般会包含几个要素：文字颜色、纹理、字体、多层描边、多层阴影以及背景及发光效果等。

本文主要介绍如何通过使用智能媒体服务IMS「云端智能剪辑」增加花字，将从「如何使用官方花字」以及「如何自定义设计花字」两方面来介绍强大的花字能力。本文效果实现较为简单，将视频地址换成您自己的oss地址，即可以实现示例效果。

01 原始字幕

我们参考市面上比较主流的营销类短视频剪辑模式，以下面这个流程作为demo展示的模版。

- 使用一张图片作为视频封面，增加主标题、副标题以及描述文字；

- 使用三个横屏拍摄的视频作为主体内容，输出为竖屏视频（方便手机观看），上下增加背景模糊效果；

- 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，保证视频的流畅性；

- TTS口播同时搭配ASR字幕。

按照上面这个模版，我们先看一个不使用任何复杂字幕效果剪辑成的视频效果：

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，在字幕颜色和视频底色比较接近时，会导致字幕不够清晰；

l 字幕比较单调乏味，视频内容不够精致，容易让用户产生视觉疲劳，降低传播力；

l 字幕效果不够突出亮眼，无法一眼就让用户把握视频关键信息。

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": "朋友聚餐",
            "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": "家人团聚",
            "Y": 0.7,
            "FontSize": 80,
            "Angle": "30",
            "Alignment": "TopCenter",
            "FontColor": "#ffffff"
          },
          {
            "Type": "Text",
            "Font": "HappyZcool-2016",
            "Content": "同事团建",
            "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": "新鲜蔬菜",
        "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": "还有各种新鲜蔬菜等你来品尝~",
        "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": "主标题",
        "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"
      }
    ]
  }]
}

02 32套官方花字

为了解决上述原始字幕文字不明显以及效果比较差等一些问题，我们可以用IMS中已集成的官方花字来丰富视频内容。阿里云智能媒体服务新增32套高级花字。

花字效果示例：

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

可以简单设置花字Id来一键式实现多种花字效果。使用官方花字对视频内容进行丰富的效果如下：

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

对比没有配置花字的原始字幕版本的效果，可以发现：使用官方花字制作的营销短视频，不再会由于视频底色变化而让人看不清字幕，从而更加能抓住观众的注意力，加深印象。

设置花字的方式也十分简便，直接设置一个花字Id即可，比如"EffectColorStyle": "CS0002-000011"，如果需要修改文字字体，可以使用自定义字体功能或者使用我们的官方内置字体库。

官方花字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": "朋友聚餐",
            "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": "家人团聚",
            "Y": 0.7,
            "FontSize": 80,
            "Angle": "30",
            "Alignment": "TopCenter",
            "EffectColorStyle": "CS0001-000015"
          },
          {
            "Type": "Text",
            "Content": "同事团建",
            "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": "新鲜蔬菜",
        "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": "还有各种新鲜蔬菜等你来品尝~",
        "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": "主标题",
        "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"
      }
    ]
  }]
}

03 自定义设计花字

当官方花字仍无法满足视频制作效果的需求，我们也支持自定义花字功能。您可以灵活组织多层描边效果，多层阴影效果，我们也支持设置高斯模糊，实现字幕发光效果。

在具体Timeline设置前，我们先来看一下自定义设计花字的成片效果。

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

自定义花字的API协议：

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

首先，我们来看一个多层描边的花字示例。我们以官方花字CS0001-000016这个效果为例。

CS0001-000016花字

仔细观察，可以知道这个花字是通过从外到内叠加颜色逐渐变深的多层描边来实现的，通过在SubtitleEffects中设置多层颜色逐渐变深的描边效果即可实现这个花字。

Color字段为RGB颜色值，Type设置为Outline表示描边，Bord、Shift设置成0-1的小数时，表示相对字体大小的值，实际渲染时会乘以FontSize值，这样即可实现不同字体大小下，花字效果基本保持一致。

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需要比上层描边Bord设置的稍大一些，否则底层的描边会被上层的描边遮住，从而失去效果。

该花字的文字颜色为白色，设置字体为站酷快乐体，据此可以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
  }]
}

我们再来看如何自定义实现字幕发光效果。

CS0002-000015花字

我们以CS0002-000015这个花字效果为例。仔细看，这个花字整体是由两部分组成的，一部分为底部的文字投影，一部分为上层的文字主体。

再细细观察，可以发现，文字投影部分最外是由一层淡蓝色发光效果构成，中间是一层描边，描边中间包含深蓝色的文字实体。发光的效果我们是通过给阴影增加模糊效果来实现。

上层文字主体部分，是由一个层描边包含文字主体的轮廓构成，文字主体部分有半透明效果，所以该花字效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
    }
  ]
}

按照上面这个自定义花字的方法，我们可以实现任意想实现的花字效果。上面这个探店营销短视频的timeline就这样实现出来了。

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": "朋友聚餐",
            "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": "家人团聚",
            "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": "同事团建",
            "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": "新鲜蔬菜",
        "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": "还有各种新鲜蔬菜等你来品尝~",
        "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": "主标题",
        "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，没有任何时间截取的参数设置，通过轨道对齐功能，实现口播和视频相对齐，完成全流程自动化剪辑。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、数字人制作等核心功能，并可使用 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求。

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