JavaScript is turned off for this site

The tests run in JavaScript, and this browser did not run the page's scripts. A browser setting, or a policy such as DefaultJavaScriptSetting set to 2 in Chrome or Edge, blocks JavaScript on this site. The list of test videos on this page also needs JavaScript.

For you

In Chrome, open Settings > Privacy and security > Site settings > JavaScript and allow this site. In Edge, open edge://settings/content/javascript and allow this site.
If a script-blocking extension is installed, allow this site in the extension.
Reload this page.

For IT

If DefaultJavaScriptSetting blocks scripts, add this site to the JavaScriptAllowedForUrls policy, for example [*.]ceribell.video.

Test videos

Play any test video yourself with the browser's own controls. The playback test on the Test page plays the same files and measures them.

Ceribell setup video
HEVC
H.264, VP9 and AV1
Audio

Ceribell setup video

This section has the same video in H.264 and in HEVC. Play them side by side to compare the picture. Play both starts the two copies together and mutes the HEVC copy.