You should have a URL (a web address) for your poster image. You can either upload the image to your own website or use an image hosting service to get the image URL.

    Use the “poster” Parameter: In your video player settings or code, you can use the “poster” parameter and provide the URL of your poster image. It should look something like this:

    poster= http://example.com/poster.png 

    Once you’ve added the “poster” parameter with your image URL, save the changes to your video player settings or code.

    By following these steps and specifying the URL of your poster image using the “poster” parameter, you can set a custom poster image for your video player. When users open the video, they will see this image before playing the video content.

    Please note that the poster image is often used as a preview or thumbnail for the video and can be an essential visual element to attract users to click and play the video.