Videogular在Ubuntu 14.04上的Firefox 39.0中无效

Question

我正在尝试Videogular以下是我的HTML模板，

<videogular>
                    <vg-media vg-src="vsource.sources">
                    </vg-media>

                    <vg-controls>
                      <vg-play-pause-button></vg-play-pause-button>
                      <vg-time-display>{{ currentTime | date:'mm:ss' }}</vg-time-display>
                      <vg-scrub-bar>
                        <vg-scrub-bar-current-time></vg-scrub-bar-current-time>
                      </vg-scrub-bar>
                      <vg-time-display>{{ timeLeft | date:'mm:ss' }}</vg-time-display>
                      <vg-volume>
                        <vg-mute-button></vg-mute-button>
                        <vg-volume-bar></vg-volume-bar>
                      </vg-volume>
                      <vg-fullscreen-button></vg-fullscreen-button>
                    </vg-controls>

                    <vg-overlay-play></vg-overlay-play>
                    <!-- <vg-poster vg-url='controller.config.plugins.poster'></vg-poster> -->

                  </videogular>

它在Chrome上运行正常。但在Firefox中，视频标签是空的。 它就像<Video></video>。但在chrome中，它适用于源和类型。