revision:
It specifies the URL of the resource to be used by the object element. The data attribute of the <object> element sets the URL of the resource, which can be audio, video, pdf, flash, etc. used by the object.
<object data="URL">
URL specifies the URL of the resource to be used by the object. Possible values: an absolute URL, which points to data on another web site, or a relative URL, which points to data within a web site.
<object data="../../pics/1.jpg" width="300" height="200"></object>
codes:
<object data="../../pics/Wuzhen-20-10_02.mp4" width="400" height="300"></object>