def find_video_attachments(document_attachments):
    """This function identifies any attached videos in a collection of document attachments.

    :param document_attachments: Attachments associated with a document
    :type document_attachments: list, dict
    :returns: A list of dictionaries containing info on any video attachments
    """
    if isinstance(document_attachments, dict):
        document_attachments = [document_attachments]
    video_info_list = []
    for collection in document_attachments:
        if "video" in collection['contentType']:
            size = round(collection['size']/1048576, 2)
            video_info_list.append({"download_url": collection['url'], "size": size})
    return video_info_list