To manage the video field display in the submit form, you do that From theme options:

Help – https://help.wprentals.org/article/1-30-how-to-manage-submit-form-fields-and-mandatory-fields/

If you let the video field in the submit form, you can add the Video ID from youtube or Vimeo as in this screenshot from Add Listing -> Images -> Video section. See more details here.