Height of the wrapper not working on the container - html

Question

I am trying to make a background video with the fixed height of 700px without affecting the aspect ratio. video can crop. My issue is that the full height of the video is showing even I have provided a height of 700 px. Here is the code:
<div class="video-container">
<div class="video-overlay-text">
<h1>Some heading</h1>
<p>Sentence</p>
</div>
<video autoplay loop muted id="video-bg">
<source src="homepage-video-mp4_1.mp4" type="video/mp4" />
</video>
</div>
here is the CSS:
#video-bg {
position: relative;
width: auto;
min-width: 100%;
height: auto;
background: transparent url(video-bg.jpg) no-repeat;
background-size: cover;
}
video {
display: block;
position: absolute;
}
.video-container {
width: 100%;
height: 600px;
overflow: hidden;
position: relative;
top: 0;
right: 0;
z-index: 0;
}
.video-overlay-text {
position: absolute;
z-index: 5;
overflow: auto;
bottom: 20%;
left: 4%;
max-width: 700px;
margin: auto;
display: block;
}
.video-overlay-text h1 {
color: #ffffff;
font-size:34px;
line-height: 36px;
}
.video-overlay-text p {
color: #ffffff;
}
I have tried everything. Sometimes the mobile view gets cut and the text moves way up.

Answer 1

I have added max-height which will be helpful for all screen sizes. Also added a demo text to show the limit of the video. Hope this helps.
#video-bg {
position: relative;
width: auto;
min-width: 100%;
background: transparent url(video-bg.jpg) no-repeat;
background-size: cover;
}
video {
display: block;
position: absolute;
}
.video-container {
width: 100%;
max-height: 600px;
overflow: hidden;
position: relative;
top: 0;
right: 0;
z-index: 0;
}
.video-overlay-text {
position: absolute;
z-index: 5;
overflow: auto;
bottom: 20%;
left: 4%;
max-width: 700px;
margin: auto;
display: block;
}
.video-overlay-text h1 {
color: #ffffff;
font-size: 34px;
line-height: 36px;
}
.video-overlay-text p {
color: #ffffff;
}
<div class="video-container">
<div class="video-overlay-text">
<h1>Some heading</h1>
<p>Sentence</p>
</div>
<video autoplay loop muted id="video-bg">
<source src="//ak3.picdn.net/shutterstock/videos/2743133/preview/stock-footage-shanghai-china-circa-july-timelapse-video-of-shanghai-china-skyline-at-sunset-circa-july.mp4" type="video/mp4" />
</video>
</div>
<h2>Hello</h2>