It was rejected: var promise = document.querySelector('video').play() You should always look at the Promise returned by the play function to see if Key point: Don't assume a video will play, and don't show a pause button when the video is Important that I'm going to write it one more time below for those who simply Here's the one thing to remember: Don't ever assume a video will play, andĭon't show a pause button when the video is not actually playing. Specify an allowlist of URL patterns where autoplay will always be enabled.īest practices for web developers Audio/Video elements The AutoplayAllowlist policy allows you to.The AutoplayAllowed policy controls whether.List help page to learn how to set the autoplay related enterprise It is possible to change the autoplay behavior with Chrome enterprise policiesįor use cases such as kiosks or unattended systems. Privilege to the iframe in order for the content to autoplay. However, the blog needs to explicitly delegate that Users interacted with the domain to get to the blog, soĪutoplay is allowed. However, care should be taken to make sure usersĮxample 4: embeds an iframe with a movie trailer to

Autoplay on the news article pages would be allowed because of user Most people enter the site through the homepage and then click on the newsĪrticles. Navigates directly from a social media page or search.Įxample 3: has both text and video content. Users' media engagement score is low, so autoplay wouldn't be allowed if a user

Most users go to the site for text content and watch videos only occasionally. As their media engagement score isĮxample 2: has both text and video content. Warning: Older articles incorrectly recommend using the attribute gesture=media whichĮxample 1: Every time a user visits on their The autoplay attribute will also be ignored. User gesture will reject the promise with a NotAllowedError DOMException. When the permissions policy for autoplay is disabled, calls to play() without a Note that autoplay is allowed by default on Permission, it can delegate that permission to cross-origin iframes with the disable-features=PreloadMediaEngagementData,Ī permissions policy allows developers to selectively enable and disableīrowser features and APIs. Whether sites with the highest overall MEI get autoplay by default for You can also decide to make sure autoplay is never allowed by disabling MEI and Your site and playback autoplay would be always allowed. This allows you to test your website as if user were strongly engaged with You can disable the autoplay policy entirely by using a command lineĬhrome.exe -autoplay-policy=no-user-gesture-required. To test your website for different levels of user engagement. Screenshot of the about://media-engagement internal page in Chrome.Īs a developer, you may want to change Chrome autoplay policy behavior locally When it is high enough, media isĪ user's MEI is available at the about://media-engagement internal page. Where media is played on a regular basis.

Size of the video (in px) must be greater than 200x140.įrom that, Chrome calculates a media engagement score, which is highest on sites.

Consumption of the media (audio/video) must be greater than seven seconds.

Chrome's approach is a ratio of visits to significant media The Media Engagement Index (MEI) measures an individual's propensity to consume

Top frames can delegate autoplay permission to their iframes to.

The user has added the site to their home screen on mobile or.

Threshold has been crossed, meaning the user has previously played video

On desktop, the user's Media Engagement Index.

The user has interacted with the domain (click, tap, etc.).

Users and to benefit publishers with legitimate use cases. These changes are intended to give greater control of playback to Policies in order to improve the user experience, minimize incentives to installĪd blockers, and reduce data consumption on expensive and/or constrained Internet memes tagged 'autoplay' found on Imgflip and Imgur.Īs you may have noticed, web browsers are moving towards stricter autoplay

Autoplay chrome browser