Of 49,573 top-1M pages that embed a YouTube, Vimeo or Wistia player, 95.8% have no VideoObject markup, which limits video rich results.
Source: PageSpeed Matters. HTTP Archive top 1M crawl, Sept 2026, mobile.
Rendered structured data is counted, so markup added by JavaScript is included.
Source: VideoObject Schema 2026: Missing on 95.8% of Video Pages - PageSpeed Matters