loadHtmlWithBaseUrl

Loads an HTML string with an explicit base-URL origin, mirroring Android WebView's loadDataWithBaseURL. Unlike WebView, Cefrium serves the content as a GENUINE network response at baseUrl (not a data: document), so the document has a real network origin and inline embedded players that require a network-served parent -- e.g. the YouTube IFrame player -- PLAY (a data: document is rejected with Error 152, which is why WebView's loadDataWithBaseURL fails here).

Pass YOUR OWN app origin as baseUrl, e.g. loadHtmlWithBaseUrl("<iframe src='https://www.youtube.com/embed/ID'></iframe>", "https://app.example.com") -- NOT "https://www.youtube.com" (YouTube rejects same-origin self-embedding).