"Why does my HTML5 video flash with a white screen right before it starts

I have been working on incorporating an OGG/MP4/OGV video file into my website by using HTML5 Video tags. However, I am encountering an issue where a white box flashes momentarily before the video loads. I attempted to change the background color of the video element in my CSS, but the problem persists. Is there a way to prevent this unwanted flash?

Here is my current CSS:

video {
  background-color:#000;
  width:100%;
  height:auto;
}

Any help would be greatly appreciated. Thank you!

Answer №1

When encountering a similar configuration where the video's height is set to auto and the parent element does not have a fixed height, I found that adding a border to the video element resolved the problem. It is unclear why this solution works, but my guess is that it prompts the browser to render the video layout before finalizing the height calculation.

video {
    // ...
    border-bottom: 1px solid transparent;
}

Answer №2

video {background: rgba(0, 0, 0, 0);}

This solution should suffice.

Answer №3

I experienced a flickering white box appearing between the 'poster' image and the initial frame of my 'video'. It seems like you might be facing the same issue with the white flash.

To resolve this problem, I found two solutions:

  1. Add [#t=0.1] after your video source in this manner:
<video id="myVideo" playsinline loop muted onended="resetVideo()">
            <source src="xxxx.mp4#t=0.1" type="video/mp4">
            Your browser does not support the video tag.
        </video>

Here, 0.1 represents the time in seconds (one-tenth of a second). This action sets the first frame of the video as the placeholder/thumbnail.

  1. Try using a background-image property. Although changing the background-color may not have worked for you, utilizing a background-image could potentially solve the issue. The effectiveness of this method depends on your specific circumstances. You can implement the background-image property with a URL like this:
background-image: url("first-frame-image.jpg");

Afterward, adjust other background properties to ensure that the background aligns correctly over the video. In my case, I set the following background properties:

background-repeat: no-repeat;
background-size: cover;
background-position: center;

I hope these solutions prove helpful to you!

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