{
  "html": {
    "elements": {
      "track": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/track",
          "spec_url": "https://html.spec.whatwg.org/multipage/media.html#the-track-element",
          "tags": [
            "web-features:text-tracks"
          ],
          "support": {
            "chrome": {
              "version_added": "23"
            },
            "chrome_android": {
              "version_added": "25",
              "notes": "Doesn't work for fullscreen video."
            },
            "edge": {
              "version_added": "12"
            },
            "firefox": {
              "version_added": "31"
            },
            "firefox_android": "mirror",
            "ie": {
              "version_added": "10"
            },
            "oculus": "mirror",
            "opera": {
              "version_added": "12.1"
            },
            "opera_android": {
              "version_added": "12.1"
            },
            "safari": {
              "version_added": "6"
            },
            "safari_ios": "mirror",
            "samsunginternet_android": "mirror",
            "webview_android": "mirror",
            "webview_ios": "mirror"
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "default": {
          "__compat": {
            "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-track-default",
            "tags": [
              "web-features:text-tracks"
            ],
            "support": {
              "chrome": {
                "version_added": "23"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "31"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "10"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "12.1"
              },
              "opera_android": {
                "version_added": "12.1"
              },
              "safari": {
                "version_added": "6"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "kind": {
          "__compat": {
            "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-track-kind",
            "tags": [
              "web-features:text-tracks"
            ],
            "support": {
              "chrome": {
                "version_added": "23"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "31"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "10"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "12.1"
              },
              "opera_android": "mirror",
              "safari": {
                "version_added": "6"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          },
          "descriptions": {
            "__compat": {
              "description": "`kind='descriptions'`",
              "support": {
                "chrome": {
                  "version_added": false,
                  "impl_url": "https://crbug.com/40913979"
                },
                "chrome_android": "mirror",
                "edge": "mirror",
                "firefox": {
                  "version_added": false,
                  "impl_url": "https://bugzil.la/1871143"
                },
                "firefox_android": "mirror",
                "ie": {
                  "version_added": false
                },
                "oculus": "mirror",
                "opera": "mirror",
                "opera_android": "mirror",
                "safari": {
                  "version_added": false,
                  "impl_url": "https://webkit.org/b/266724"
                },
                "safari_ios": "mirror",
                "samsunginternet_android": "mirror",
                "webview_android": "mirror",
                "webview_ios": "mirror"
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          }
        },
        "label": {
          "__compat": {
            "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-track-label",
            "tags": [
              "web-features:text-tracks"
            ],
            "support": {
              "chrome": {
                "version_added": "23"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "31"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "10"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "12.1"
              },
              "opera_android": "mirror",
              "safari": {
                "version_added": "6"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "src": {
          "__compat": {
            "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-track-src",
            "tags": [
              "web-features:text-tracks"
            ],
            "support": {
              "chrome": {
                "version_added": "23"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": [
                {
                  "version_added": "50"
                },
                {
                  "version_added": "31",
                  "partial_implementation": true,
                  "notes": "Before Firefox 50, setting the `src` didn't work, though it didn't raise an error."
                }
              ],
              "firefox_android": "mirror",
              "ie": {
                "version_added": "10"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "12.1"
              },
              "opera_android": "mirror",
              "safari": {
                "version_added": "6"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "srclang": {
          "__compat": {
            "spec_url": "https://html.spec.whatwg.org/multipage/media.html#attr-track-srclang",
            "tags": [
              "web-features:text-tracks"
            ],
            "support": {
              "chrome": {
                "version_added": "23"
              },
              "chrome_android": "mirror",
              "edge": {
                "version_added": "12"
              },
              "firefox": {
                "version_added": "31"
              },
              "firefox_android": "mirror",
              "ie": {
                "version_added": "10"
              },
              "oculus": "mirror",
              "opera": {
                "version_added": "12.1"
              },
              "opera_android": "mirror",
              "safari": {
                "version_added": "6"
              },
              "safari_ios": "mirror",
              "samsunginternet_android": "mirror",
              "webview_android": "mirror",
              "webview_ios": "mirror"
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}