{"json_modified": "2016-09-28T13:46:30.754364", "uuid": "4cac2852-913d-4e1b-a72e-41cb66556e62", "title": "MediaDevices.getSupportedConstraints()", "url": "/en-US/docs/Web/API/MediaDevices/getSupportedConstraints", "tags": ["API", "WebRTC", "MediaDevices", "Reference", "Media Streams API", "getSupportedConstraints", "Media Capture and Streams API", "Media", "Method"], "translations": [], "modified": "2016-09-28T13:46:31", "label": "MediaDevices.getSupportedConstraints()", "localization_tags": [], "locale": "en-US", "id": 195949, "last_edit": "2016-09-28T13:46:26", "summary": "The <code><strong>getSupportedConstraints</strong></code><strong><code>()</code></strong> method of the <a href=\"/en-US/docs/Web/API/MediaDevices\" title=\"The MediaDevices interface provides access to connected media input devices like cameras and microphones, as well as screen sharing. In essence, it lets you obtain access to any hardware source of media data.\"><code>MediaDevices</code></a> interface returns an object based on the <a href=\"/en-US/docs/Web/API/MediaTrackSupportedConstraints\" title=\"The MediaTrackSupportedConstraints dictionary establishes the list of constrainable properties recognized by the user agent or browser in its implementation of the MediaStreamTrack object. An object conforming to MediaTrackSupportedConstraints is returned by MediaDevices.getSupportedConstraints().\"><code>MediaTrackSupportedConstraints</code></a> dictionary, whose member fields each specify one of the constrainable properties the <a class=\"glossaryLink\" href=\"/en-US/docs/Glossary/user_agent\" title=\"user agent: A user agent is a computer program representing a person, for example, a browser in a Web context.\">user agent</a> understands.", "sections": [{"id": "Quick_Links", "title": null}, {"id": "Syntax", "title": "Syntax"}, {"id": "Parameters", "title": "Parameters"}, {"id": "Return_value", "title": "Return value"}, {"id": "Example", "title": "Example"}, {"id": "HTML_content", "title": "HTML content"}, {"id": "CSS_content", "title": "CSS content"}, {"id": "JavaScript_content", "title": "JavaScript content"}, {"id": "Result", "title": "Result"}, {"id": "Specifications", "title": "Specifications"}, {"id": "Browser_compatibility", "title": "Browser compatibility"}], "slug": "Web/API/MediaDevices/getSupportedConstraints", "review_tags": []}