angular.module('myapp').service([function BarService() {

    this.bindOnThis = {
        muted: true,
        playing: false
    };

}]);


angular.module('myapp').controller(['$scope', 'BarService', function FooController($scope, BarService) {

    $scope.videoConfig = {
        muted: false,
        playing: false
    };

    $scope.barServiceConfig = BarService.bindOnThis;

    $scope.$watch('barServiceConfig.muted', function(newValue) {

        if (newValue) {
            $scope.videoConfig.muted = newValue;
        }

    });

}]);

<video video-dtv is-muted="videoConfig.muted", is-playing="videoConfig.playing" />