I spent about 10 months churning out written articles that I either sold through constant-content.com or posting myself to ad revenue sites (via hubpages) in 2015 and creating print on demand designs that people could order. It earned a few hundred dollars during holiday months, and then tapered off every year. Now, my articles are "evergreen" enough that after ten years and no new content, they still send me... Source: over 1 year ago

You can see what kinds of properties you can see for media - I fed the URL of a video into embed.ly as that document suggested, but none of the fields returned gave me a video length... You may want to try with one of the images posted to your sub and see what properties you get. Maybe there's something else in the metadata you can search for that is common across the short videos. Source: 7 months ago

Some people report success with getting approved by https://embed.ly/, others report that service never responded to them. Source: 12 months ago

Embed.ly — Provides APIs for embedding media in a webpage, responsive image scaling, extracting elements from a webpage. Free for up to 5,000 URLs/month at 15 requests/second. - Source: dev.to / over 1 year ago

Use https://embed.ly to extract the MEDIA_AUTHoR or MEDIA_AUTHOR_URL from the link and add it to either of the 2 rules below. Source: over 1 year ago

If you pull up that script, it references "cdn.embedly.com", a third-party content delivery network. See their home page at https://embed.ly/. Source: about 2 years ago