html video image
<video controls poster="/images/w3html5.gif">
<source src="movie.mp4" type="video/mp4">
<source src="movie.ogg" type="video/ogg">
Your browser does not support the video tag.
</video>how to display the first frame of the video element in html
Try appending #t={seconds} to the end of your src value. Here's an example:
<video width="300" height="150">
<source src="testvideo.mp4#t=0.1" type="video/mp4" />
</video>
It works fine on Chrome/Firefox and many other browsers.
Source: stackoverflow.com