{
  "api": {
    "AudioTrackList": {
      "__compat": {
        "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioTrackList",
        "support": {
          "chrome": {
            "version_added": "45",
            "flags": [
              {
                "type": "preference",
                "name": "enable-experimental-web-platform-features",
                "value_to_set": "enabled"
              }
            ]
          },
          "chrome_android": {
            "version_added": "45",
            "flags": [
              {
                "type": "preference",
                "name": "enable-experimental-web-platform-features",
                "value_to_set": "enabled"
              }
            ]
          },
          "edge": [
            {
              "version_added": "79",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            {
              "version_added": "12",
              "version_removed": "79"
            }
          ],
          "firefox": {
            "version_added": "33",
            "flags": [
              {
                "type": "preference",
                "name": "media.track.enabled",
                "value_to_set": "true"
              }
            ]
          },
          "firefox_android": {
            "version_added": "33",
            "flags": [
              {
                "type": "preference",
                "name": "media.track.enabled",
                "value_to_set": "true"
              }
            ]
          },
          "ie": {
            "version_added": "10"
          },
          "opera": {
            "version_added": "32",
            "flags": [
              {
                "type": "preference",
                "name": "enable-experimental-web-platform-features",
                "value_to_set": "enabled"
              }
            ]
          },
          "opera_android": {
            "version_added": "32",
            "flags": [
              {
                "type": "preference",
                "name": "enable-experimental-web-platform-features",
                "value_to_set": "enabled"
              }
            ]
          },
          "safari": {
            "version_added": "6.1"
          },
          "safari_ios": {
            "version_added": "7"
          },
          "samsunginternet_android": {
            "version_added": false
          },
          "webview_android": {
            "version_added": "45"
          }
        },
        "status": {
          "experimental": false,
          "standard_track": true,
          "deprecated": false
        }
      },
      "addtrack_event": {
        "__compat": {
          "description": "<code>addtrack</code> event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioTrackList/addtrack_event",
          "support": {
            "chrome": {
              "version_added": "45",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "chrome_android": {
              "version_added": "45",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "edge": [
              {
                "version_added": "79",
                "flags": [
                  {
                    "type": "preference",
                    "name": "enable-experimental-web-platform-features",
                    "value_to_set": "enabled"
                  }
                ]
              },
              {
                "version_added": "12",
                "version_removed": "79"
              }
            ],
            "firefox": {
              "version_added": "33",
              "flags": [
                {
                  "type": "preference",
                  "name": "media.track.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "firefox_android": {
              "version_added": "33",
              "flags": [
                {
                  "type": "preference",
                  "name": "media.track.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "ie": {
              "version_added": "10"
            },
            "opera": {
              "version_added": "32",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "opera_android": {
              "version_added": "32",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "safari": {
              "version_added": "6.1"
            },
            "safari_ios": {
              "version_added": "7"
            },
            "samsunginternet_android": {
              "version_added": false
            },
            "webview_android": {
              "version_added": "45"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "change_event": {
        "__compat": {
          "description": "<code>change</code> event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioTrackList/change_event",
          "support": {
            "chrome": {
              "version_added": "45",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "chrome_android": {
              "version_added": "45",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "edge": [
              {
                "version_added": "79",
                "flags": [
                  {
                    "type": "preference",
                    "name": "enable-experimental-web-platform-features",
                    "value_to_set": "enabled"
                  }
                ]
              },
              {
                "version_added": "12",
                "version_removed": "79"
              }
            ],
            "firefox": {
              "version_added": "33",
              "flags": [
                {
                  "type": "preference",
                  "name": "media.track.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "firefox_android": {
              "version_added": "33",
              "flags": [
                {
                  "type": "preference",
                  "name": "media.track.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "ie": {
              "version_added": "10"
            },
            "opera": {
              "version_added": "32",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "opera_android": {
              "version_added": "32",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "safari": {
              "version_added": "6.1"
            },
            "safari_ios": {
              "version_added": "7"
            },
            "samsunginternet_android": {
              "version_added": false
            },
            "webview_android": {
              "version_added": "45"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "getTrackById": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioTrackList/getTrackById",
          "support": {
            "chrome": {
              "version_added": "45",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "chrome_android": {
              "version_added": "45",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "edge": [
              {
                "version_added": "79",
                "flags": [
                  {
                    "type": "preference",
                    "name": "enable-experimental-web-platform-features",
                    "value_to_set": "enabled"
                  }
                ]
              },
              {
                "version_added": "12",
                "version_removed": "79"
              }
            ],
            "firefox": {
              "version_added": "33",
              "flags": [
                {
                  "type": "preference",
                  "name": "media.track.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "firefox_android": {
              "version_added": "33",
              "flags": [
                {
                  "type": "preference",
                  "name": "media.track.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "ie": {
              "version_added": "10"
            },
            "opera": {
              "version_added": "32",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "opera_android": {
              "version_added": "32",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "safari": {
              "version_added": "6.1"
            },
            "safari_ios": {
              "version_added": "7"
            },
            "samsunginternet_android": {
              "version_added": false
            },
            "webview_android": {
              "version_added": "45"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "length": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioTrackList/length",
          "support": {
            "chrome": {
              "version_added": "45",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "chrome_android": {
              "version_added": "45",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "edge": [
              {
                "version_added": "79",
                "flags": [
                  {
                    "type": "preference",
                    "name": "enable-experimental-web-platform-features",
                    "value_to_set": "enabled"
                  }
                ]
              },
              {
                "version_added": "12",
                "version_removed": "79"
              }
            ],
            "firefox": {
              "version_added": "33",
              "flags": [
                {
                  "type": "preference",
                  "name": "media.track.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "firefox_android": {
              "version_added": "33",
              "flags": [
                {
                  "type": "preference",
                  "name": "media.track.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "ie": {
              "version_added": "10"
            },
            "opera": {
              "version_added": "32",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "opera_android": {
              "version_added": "32",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "safari": {
              "version_added": "6.1"
            },
            "safari_ios": {
              "version_added": "7"
            },
            "samsunginternet_android": {
              "version_added": false
            },
            "webview_android": {
              "version_added": "45"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "onaddtrack": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioTrackList/onaddtrack",
          "support": {
            "chrome": {
              "version_added": "45",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "chrome_android": {
              "version_added": "45",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "edge": [
              {
                "version_added": "79",
                "flags": [
                  {
                    "type": "preference",
                    "name": "enable-experimental-web-platform-features",
                    "value_to_set": "enabled"
                  }
                ]
              },
              {
                "version_added": "12",
                "version_removed": "79"
              }
            ],
            "firefox": {
              "version_added": "33",
              "flags": [
                {
                  "type": "preference",
                  "name": "media.track.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "firefox_android": {
              "version_added": "33",
              "flags": [
                {
                  "type": "preference",
                  "name": "media.track.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "ie": {
              "version_added": "10"
            },
            "opera": {
              "version_added": "32",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "opera_android": {
              "version_added": "32",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "safari": {
              "version_added": "6.1"
            },
            "safari_ios": {
              "version_added": "7"
            },
            "samsunginternet_android": {
              "version_added": false
            },
            "webview_android": {
              "version_added": "45"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "onchange": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioTrackList/onchange",
          "support": {
            "chrome": {
              "version_added": "45",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "chrome_android": {
              "version_added": "45",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "edge": [
              {
                "version_added": "79",
                "flags": [
                  {
                    "type": "preference",
                    "name": "enable-experimental-web-platform-features",
                    "value_to_set": "enabled"
                  }
                ]
              },
              {
                "version_added": "12",
                "version_removed": "79"
              }
            ],
            "firefox": {
              "version_added": "33",
              "flags": [
                {
                  "type": "preference",
                  "name": "media.track.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "firefox_android": {
              "version_added": "33",
              "flags": [
                {
                  "type": "preference",
                  "name": "media.track.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "ie": {
              "version_added": "10"
            },
            "opera": {
              "version_added": "32",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "opera_android": {
              "version_added": "32",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "safari": {
              "version_added": "6.1"
            },
            "safari_ios": {
              "version_added": "7"
            },
            "samsunginternet_android": {
              "version_added": false
            },
            "webview_android": {
              "version_added": "45"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "onremovetrack": {
        "__compat": {
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioTrackList/onremovetrack",
          "support": {
            "chrome": {
              "version_added": "45",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "chrome_android": {
              "version_added": "45",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "edge": [
              {
                "version_added": "79",
                "flags": [
                  {
                    "type": "preference",
                    "name": "enable-experimental-web-platform-features",
                    "value_to_set": "enabled"
                  }
                ]
              },
              {
                "version_added": "12",
                "version_removed": "79"
              }
            ],
            "firefox": {
              "version_added": "33",
              "flags": [
                {
                  "type": "preference",
                  "name": "media.track.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "firefox_android": {
              "version_added": "33",
              "flags": [
                {
                  "type": "preference",
                  "name": "media.track.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "ie": {
              "version_added": "10"
            },
            "opera": {
              "version_added": "32",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "opera_android": {
              "version_added": "32",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "safari": {
              "version_added": "6.1"
            },
            "safari_ios": {
              "version_added": "7"
            },
            "samsunginternet_android": {
              "version_added": false
            },
            "webview_android": {
              "version_added": "45"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      },
      "removetrack_event": {
        "__compat": {
          "description": "<code>removetrack</code> event",
          "mdn_url": "https://developer.mozilla.org/docs/Web/API/AudioTrackList/removetrack_event",
          "support": {
            "chrome": {
              "version_added": "45",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "chrome_android": {
              "version_added": "45",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "edge": [
              {
                "version_added": "79",
                "flags": [
                  {
                    "type": "preference",
                    "name": "enable-experimental-web-platform-features",
                    "value_to_set": "enabled"
                  }
                ]
              },
              {
                "version_added": "12",
                "version_removed": "79"
              }
            ],
            "firefox": {
              "version_added": "33",
              "flags": [
                {
                  "type": "preference",
                  "name": "media.track.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "firefox_android": {
              "version_added": "33",
              "flags": [
                {
                  "type": "preference",
                  "name": "media.track.enabled",
                  "value_to_set": "true"
                }
              ]
            },
            "ie": {
              "version_added": "10"
            },
            "opera": {
              "version_added": "32",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "opera_android": {
              "version_added": "32",
              "flags": [
                {
                  "type": "preference",
                  "name": "enable-experimental-web-platform-features",
                  "value_to_set": "enabled"
                }
              ]
            },
            "safari": {
              "version_added": "6.1"
            },
            "safari_ios": {
              "version_added": "7"
            },
            "samsunginternet_android": {
              "version_added": false
            },
            "webview_android": {
              "version_added": "45"
            }
          },
          "status": {
            "experimental": false,
            "standard_track": true,
            "deprecated": false
          }
        }
      }
    }
  }
}