public class WebCamPanel : MonoBehaviour
    {
        [SerializeField]
        private RawImage _WebCamImage;

        private void Awake()
        {
            var texture = new WebCamTexture();
            texture.Play();
            _WebCamImage.texture = texture;
        }

        private IEnumerator SaveScreenshot()
        {
            yield return new WaitForEndOfFrame();
            var screenshot =  _WebCamImage.texture.GetTexture2D();
            File.WriteAllBytes("Assets/test.png", screenshot.EncodeToPNG());
        }
    }