Check out example codes for "how to display the first frame of the video element in html". It will help you in understanding the concepts better.

Code Example 1

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.

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