Start your code here

<section>
    <div class="view" style="background-image: none; z-index: 0; height: 500px;">
        <div class="full-bg-img">
            <div class="mask rgba-white-light">

                <div class="container flex-center text-center">
                    <div class="row mt-5 py-5">
                        <div class="col-md-12 wow fadeIn mb-3"
                             style="animation-name: none; visibility: visible;">
                            <div class="text-center">
                                <h1 class="display-2 mb-2 wow fadeInDown green-text" data-wow-delay="0.3s">
                                    TEXTE <a class="white-text font-bold">Lorem</a>
                                </h1>
                                <h5 class="font-up mb-3 mt-1 font-bold wow fadeInDown" data-wow-delay="0.4s">
                                    Lorem ipsum                                    
                                </h5>

                                <a class="btn btn-outline-white btn-lg wow fadeInDown waves-effect waves-light"
                                   href="#" data-wow-delay="0.4s">
                                    Un bouton par exemple
                                </a>
                            </div>
                        </div>
                    </div>
                </div>
                <div class="video-parallax">
                    <video class="video-parall" src="{{link to your video)" autoplay="" loop="">
                    </video>
                </div>
            </div>
        </div>
</section>

css :

/*!* Parallax video styles*!*/
.video-parallax {
  clip: rect(0, 100vw, 700px, 0); /*!* Change second and third value to manipulate the width and height of your video *!*/
  position: absolute;
  top: 0px;
  left: 0px;
  width: 100%;
  height: 100%;
  overflow: hidden;
  visibility: hidden;
  z-index: -100;
}

.view .video-parall {
  position: fixed;
  top: 0px;
  left: 0px;
  right: 0px;
  bottom: 0px;
  min-width: 100vw;
  min-height: 100vh;
  max-width: none;
  max-height: none;
  visibility: visible;
  z-index: -1
}

En espérant que c'est ce que vous cherchez !