Try it

<label for="selfie">Take a picture of your face:</label>
<input type="file" id="selfie" name="selfie" accept="image/*" capture="user" />
<label for="picture">Take a picture using back facing camera:</label>
<input
  type="file"
  id="picture"
  name="picture"
  accept="image/*"
  capture="environment" />

label {
  display: block;
  margin-top: 1rem;
}
input {
  margin-bottom: 1rem;
}

Examples

When set on a file input type, operating systems with microphones and cameras will display a user interface allowing the selection from an existing file or the creating of a new one.

html

<p>
  <label for="soundFile">What does your voice sound like?:</label>
  <input type="file" id="soundFile" capture="user" accept="audio/*" />
</p>
<p>
  <label for="videoFile">Upload a video:</label>
  <input type="file" id="videoFile" capture="environment" accept="video/*" />
</p>
<p>
  <label for="imageFile">Upload a photo of yourself:</label>
  <input type="file" id="imageFile" capture="user" accept="image/*" />
</p>

Note these work better on mobile devices; if your device is a desktop computer, you'll likely get a typical file picker.