Video connection test

Run this on the device where videos will not play. It checks each part of playback separately, so the result names which part this connection refuses. It can only see what a browser is allowed to see — it cannot read your filter’s settings — and nothing is sent anywhere: the answers appear on this screen.

• Yideos itself—

  Whether this device can reach the site. If you are reading this page, it usually can.

• YouTube's player code—

  A small program from www.youtube.com that every video needs before it can start.

• The video player—

  Whether a real player frame comes alive and answers — a blocked frame stays silent.

• The video itself—

  Whether video data actually arrives, tested with a few seconds of muted playback.