In the utility_tags.py file, add the following content:

# utils/templatetags/utility_tags.py
import re

from django import template
from django.utils.safestring import mark_safe

register = template.Library()


"""FILTERS"""

MEDIA_CLOSED_TAGS = "|".join([
    "figure", "object", "video", "audio", "iframe"])
MEDIA_SINGLE_TAGS = "|".join(["img", "embed"])
MEDIA_TAGS_REGEX = re.compile(
    r"<(?P<tag>" + MEDIA_CLOSED_TAGS + ")[Ss]+?</(?P=tag)>|" +
    r"<(" + MEDIA_SINGLE_TAGS + ")[^>]+>",
    re.MULTILINE)


@register.filter
def first_media(content):
    """
    Returns the chunk of media-related markup from the html content
    """
    tag_match = MEDIA_TAGS_REGEX.search(content)
    media_tag = ""
    if tag_match:
        media_tag = tag_match.group()
    return mark_safe(media_tag)