Dear Aleks @Aleksandar
Sorry for the delay :)
This is possible, my first thoughts were to work with (jQuery).
You will first need to look into using Javascript and jQuery with Lay Theme:
https://laytheme.com/documentation.html#custom-javascript
Specifically the 'Newpage Event' , Changing the Common jQuery character ' $ " into 'jQuery' & how to run the Script on a specific page or project e.g
<script>
window.laytheme.on("newpageshown", function(layoutObj, type, obj){
if(type == "project" && obj.id == 1){
console.log("fantastic!");
}
});
</script>
Will console Log "fantastic" ' If ' the user is on the project with ID : 1
Each page or project has a data-type & unique data-id , that can be found in the <head> of your webpage - You can view the HTML structure of a webpage using the Developer Tools within a browser:
https://www.khanacademy.org/computing/computer-programming/html-css/web-development-tools/a/using-the-browser-developer-tools
I will be using this Stackoverflow thread as reference:
https://stackoverflow.com/questions/554273/changing-the-image-source-using-jquery
Within you videos HTML structure you will see an <img> element like this, with a src path linking to your saved custom icon file:
<img class="html5video-customplayicon" src="http://www.aleksandartodorovic.com/media/play-button-large.png">
We can use jQuery to redefine the src path to a different image if you wish. When viewing your Media Library clicking on an image will show you some more information about that image - At the bottom is the 'FILE URL' info - we can copy that and use it.
Screen Shot 2021-03-23 at 7.55.24 PM.png
This Code:
jQuery(".html5video-customplayicon").attr("src","https://yourdomain.com/wp-content/uploads/2021/03/PngItem_2100439-1.png");
jQuery > Find me element with 'class' html5video-customplayicon
Find the 'src' attribute 'attr'
Define new 'src' attribute
You will need to put the url path of your choice in.
And using the earlier 'If' project and id etc
Hope this helps Aleks & have a wonderful day, Thank you for using Lay Theme! :)
Sincerely
Richard