Radiation levels and alarms are reported on a video overlay that appears over the surveillance video and can be viewed or re-corded on existing video surveillance hardware.

辐射水平和报警报告覆盖的视频出现在监控录像里，可以查看现有的视频监控硬件记录。

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Auditude allows them to add a video overlay to the clip, advertising the content source, the original broadcast date, and links to purchase the entire episode or other related content.

Auditude允许MTV在这些视频上添加一个覆盖层，并显示内容来源、原始发布日期，并可以添加购买完整内容的链接。

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Now consider the iPhone, where an embedded video will display a nice play button in its overlay, the tapping of which will grow the video to fill the tiny screen.

现在想想iPhone，它里面的嵌入视频会在透明薄层下显示一个漂亮的播放按钮，点击后视频会全屏。

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They forgot to mention this when they published the video (an overlay has now been added at the appropriate moments on YouTube).

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One big challenge was figuring out how to overlay prerecorded video or other stored content on live video.

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Indeed, even that video showed me an overlay banner ad for a local real estate company, for some unfathomable reason.

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