video overlay

基本解釋

WMR 9 will never use overlay video, so it can always be mirrored on the PSP.
WMR 9決不會使用覆蓋視頻，所以它可以隨時反映問題的PSP 。
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.
輻射水平和報(bào)警報(bào)告覆蓋的視頻出現(xiàn)在監(jiān)控錄像里，可以查看現(xiàn)有的視頻監(jiān)控硬件記錄。
www.21csp.com.cn
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允許MTV在這些視頻上添加一個覆蓋層，并顯示內(nèi)容來源、原始發(fā)布日期，并可以添加購買完整內(nèi)容的鏈接。

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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