How to use the video poster property to set a video cover

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At this point, you can easily use the poster property provided by H5 video.

The poster attribute specifies the image to be displayed when the video is downloaded or before the user clicks the play button. If this property is not set, the first frame of the video is used instead

Demo:

Video cover

Add: sometimes the video cover will not fill up, so you need to use the object-fit attribute to cover the entire screen.

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