Embedding Video (iframe)
Written by Człowiek z usera
VIMEO
Docs: https://vimeo.zendesk.com/hc/en-us/articles/224969968-Embedding-videos-overview
YOUTUBE
Docs: https://support.google.com/youtube/answer/171780?hl=pl
WISTIA
Docs: https://wistia.com/support/embed-and-share/video-on-your-website#inline-embeds