{
  "html": {
    "elements": {
      "track": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/HTML/Element/track",
          "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"
              },
              {
                "version_added": "24",
                "version_removed": "50",
                "flags": [
                  {
                    "type": "preference",
                    "name": "media.webvtt.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "firefox_android": [
              {
                "version_added": "31"
              },
              {
                "version_added": "24",
                "version_removed": "50",
                "flags": [
                  {
                    "type": "preference",
                    "name": "media.webvtt.enabled",
                    "value_to_set": "true"
                  }
                ]
              }
            ],
            "ie": {
              "version_added": "10"
            },
            "opera": {
              "version_added": "12.1"
            },
            "opera_android": {
              "version_added": null
            },
            "safari": {
              "version_added": "6"
            },
            "safari_ios": {
              "version_added": "6"
            },
            "samsunginternet_android": {
              "version_added": "1.5",
              "notes": "Doesn't work for fullscreen video."
            },
            "webview_android": {
              "version_added": true,
              "notes": "Doesn't work for fullscreen video."
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        },
        "default": {
          "__compat": {
            "support": {
              "chrome": {
                "version_added": "23"
              },
              "chrome_android": {
                "version_added": "25"
              },
              "edge": {
                "version_added": "12"
              },
              "firefox": [
                {
                  "version_added": "31"
                },
                {
                  "version_added": "24",
                  "version_removed": "50",
                  "flags": [
                    {
                      "type": "preference",
                      "name": "media.webvtt.enabled",
                      "value_to_set": "true"
                    }
                  ]
                }
              ],
              "firefox_android": [
                {
                  "version_added": "31"
                },
                {
                  "version_added": "24",
                  "version_removed": "50",
                  "flags": [
                    {
                      "type": "preference",
                      "name": "media.webvtt.enabled",
                      "value_to_set": "true"
                    }
                  ]
                }
              ],
              "ie": {
                "version_added": "10"
              },
              "opera": {
                "version_added": "12.1"
              },
              "opera_android": {
                "version_added": null
              },
              "safari": {
                "version_added": "6"
              },
              "safari_ios": {
                "version_added": null
              },
              "samsunginternet_android": {
                "version_added": "1.5"
              },
              "webview_android": {
                "version_added": "4.4"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "kind": {
          "__compat": {
            "support": {
              "chrome": {
                "version_added": "23"
              },
              "chrome_android": {
                "version_added": "25"
              },
              "edge": {
                "version_added": "12"
              },
              "firefox": [
                {
                  "version_added": "31"
                },
                {
                  "version_added": "24",
                  "version_removed": "50",
                  "flags": [
                    {
                      "type": "preference",
                      "name": "media.webvtt.enabled",
                      "value_to_set": "true"
                    }
                  ]
                }
              ],
              "firefox_android": [
                {
                  "version_added": "31"
                },
                {
                  "version_added": "24",
                  "version_removed": "50",
                  "flags": [
                    {
                      "type": "preference",
                      "name": "media.webvtt.enabled",
                      "value_to_set": "true"
                    }
                  ]
                }
              ],
              "ie": {
                "version_added": "10"
              },
              "opera": {
                "version_added": "12.1"
              },
              "opera_android": {
                "version_added": null
              },
              "safari": {
                "version_added": "6"
              },
              "safari_ios": {
                "version_added": null
              },
              "samsunginternet_android": {
                "version_added": "1.5"
              },
              "webview_android": {
                "version_added": "4.4"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "label": {
          "__compat": {
            "support": {
              "chrome": {
                "version_added": "23"
              },
              "chrome_android": {
                "version_added": "25"
              },
              "edge": {
                "version_added": "12"
              },
              "firefox": [
                {
                  "version_added": "31"
                },
                {
                  "version_added": "24",
                  "version_removed": "50",
                  "flags": [
                    {
                      "type": "preference",
                      "name": "media.webvtt.enabled",
                      "value_to_set": "true"
                    }
                  ]
                }
              ],
              "firefox_android": [
                {
                  "version_added": "31"
                },
                {
                  "version_added": "24",
                  "version_removed": "50",
                  "flags": [
                    {
                      "type": "preference",
                      "name": "media.webvtt.enabled",
                      "value_to_set": "true"
                    }
                  ]
                }
              ],
              "ie": {
                "version_added": "10"
              },
              "opera": {
                "version_added": "12.1"
              },
              "opera_android": {
                "version_added": null
              },
              "safari": {
                "version_added": "6"
              },
              "safari_ios": {
                "version_added": null
              },
              "samsunginternet_android": {
                "version_added": "1.5"
              },
              "webview_android": {
                "version_added": "4.4"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        },
        "src": {
          "__compat": {
            "support": {
              "chrome": {
                "version_added": "23"
              },
              "chrome_android": {
                "version_added": "25"
              },
              "edge": {
                "version_added": "12"
              },
              "firefox": [
                {
                  "version_added": "31"
                },
                {
                  "version_added": "24",
                  "version_removed": "50",
                  "flags": [
                    {
                      "type": "preference",
                      "name": "media.webvtt.enabled",
                      "value_to_set": "true"
                    }
                  ]
                }
              ],
              "firefox_android": [
                {
                  "version_added": "31"
                },
                {
                  "version_added": "24",
                  "version_removed": "50",
                  "flags": [
                    {
                      "type": "preference",
                      "name": "media.webvtt.enabled",
                      "value_to_set": "true"
                    }
                  ]
                }
              ],
              "ie": {
                "version_added": "10"
              },
              "opera": {
                "version_added": "12.1"
              },
              "opera_android": {
                "version_added": null
              },
              "safari": {
                "version_added": "6"
              },
              "safari_ios": {
                "version_added": null
              },
              "samsunginternet_android": {
                "version_added": "1.5"
              },
              "webview_android": {
                "version_added": "4.4"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          },
          "settable_src": {
            "__compat": {
              "description": "<code>src</code> settable",
              "support": {
                "chrome": {
                  "version_added": null
                },
                "chrome_android": {
                  "version_added": null
                },
                "edge": {
                  "version_added": "≤18"
                },
                "firefox": {
                  "version_added": "50",
                  "notes": "Before Firefox 50, setting the <code>src</code> didn't work, though it didn't raise an error."
                },
                "firefox_android": {
                  "version_added": "50",
                  "notes": "Before Firefox 50, setting the <code>src</code> didn't work, though it didn't raise an error."
                },
                "ie": {
                  "version_added": null
                },
                "opera": {
                  "version_added": null
                },
                "opera_android": {
                  "version_added": null
                },
                "safari": {
                  "version_added": null
                },
                "safari_ios": {
                  "version_added": null
                },
                "samsunginternet_android": {
                  "version_added": null
                },
                "webview_android": {
                  "version_added": null
                }
              },
              "status": {
                "experimental": false,
                "standard_track": true,
                "deprecated": false
              }
            }
          }
        },
        "srclang": {
          "__compat": {
            "support": {
              "chrome": {
                "version_added": "23"
              },
              "chrome_android": {
                "version_added": "25"
              },
              "edge": {
                "version_added": "12"
              },
              "firefox": [
                {
                  "version_added": "31"
                },
                {
                  "version_added": "24",
                  "version_removed": "50",
                  "flags": [
                    {
                      "type": "preference",
                      "name": "media.webvtt.enabled",
                      "value_to_set": "true"
                    }
                  ]
                }
              ],
              "firefox_android": [
                {
                  "version_added": "31"
                },
                {
                  "version_added": "24",
                  "version_removed": "50",
                  "flags": [
                    {
                      "type": "preference",
                      "name": "media.webvtt.enabled",
                      "value_to_set": "true"
                    }
                  ]
                }
              ],
              "ie": {
                "version_added": "10"
              },
              "opera": {
                "version_added": "12.1"
              },
              "opera_android": {
                "version_added": null
              },
              "safari": {
                "version_added": "6"
              },
              "safari_ios": {
                "version_added": null
              },
              "samsunginternet_android": {
                "version_added": "1.5"
              },
              "webview_android": {
                "version_added": "4.4"
              }
            },
            "status": {
              "experimental": false,
              "standard_track": true,
              "deprecated": false
            }
          }
        }
      }
    }
  }
}