<video id="myVideo" width="100%" controls preload>
<source src="video/test.mp4" type="video/mp4" codecs="avc1.42E01E,mp4a.40.2">
</video>other mainstream browsers are fine, adapting to the width of the parent element, but only 100 pixels wide in IE9. Wait online
< video height='50%' width='50%' >
change to
< video style='height:50%; width:50%;' >
or write to css.
is the width of video's parent container when IE9 sets display:inline to video
ie9?
this is the bug, of IE9. Please set it in style mode. ideo-tag-not-supporting-relative-width-height" rel=" nofollow noreferrer "> Please see this post on Stackoverflow a few years ago
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