> For the complete documentation index, see [llms.txt](https://docs.exoclick.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.exoclick.com/publishers/zh/vast/custom-tracking-urls.md).
# VAST 自定义跟踪 URL
## 定义
包装器广告可能包含任意数量的跟踪 URL，以便广告活动可以从 InLine 响应中投放，但与展示分开跟踪。它还可以包含跟踪元素，用于分别跟踪 Linear 或 NonLinear 的观看或事件。提供 Wrapper Ad 响应的服务器可能无法准确知道在 InLine 广告中下游将交付哪些创意元素；在这种情况下，Wrapper 应包含占位符，以表示可在视频播放器中播放的最大创意集合。
自定义跟踪 URL 有 2 个参数：
* `event` 要跟踪的事件名称。 `creativeView` 在存在时应始终请求。
* 同一事件可以添加多次，但每个都应具有 **唯一 URI**.
* `url` 用于在播放期间跟踪各种事件的 URI。
* 同一 URI 可以添加多次，但每个都应具有 **唯一事件**.
* URL 只应具有 ***https*** 协议。
## 示例
```xml
```
## 支持的跟踪事件 `tracking_event` 用于 `创意` > `线性` > `TrackingEvents` > `跟踪` 在 VAST 标签（链接）或 VAST 包装器标签（链接）中
| 事件 | 说明 |
| ---------------- | ---------------- |
| creativeView | 当创意被展示时触发。 |
| start | 当线性广告开始播放时触发。 |
| midpoint | 当线性广告到达中点时触发。 |
| firstQuartile | 当线性广告到达第一四分位时触发。 |
| thirdQuartile | 当线性广告到达第三四分位时触发。 |
| 完成 | 当线性广告到达结束点时触发。 |
| mute | 当线性广告被静音时触发。 |
| unmute | 当线性广告取消静音时触发。 |
| pause | 当线性广告暂停时触发。 |
| rewind | 当线性广告倒回时触发。 |
| resume | 当线性广告恢复播放时触发。 |
| fullscreen | 当线性广告处于全屏状态时触发。 |
| expand | 当线性广告展开时触发。 |
| collapse | 当线性广告收起时触发。 |
| acceptInvitation | 当线性广告被接受时触发。 |
| close | 当线性广告关闭时触发。 |
---
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