Javascript VideoJS:mp4在动态更改视频url时不工作

我正在使用videoJs来显示视频

HTML

当我使用.webm时，它工作得非常好，但我尝试使用mp4时，出现了以下错误

VIDEOJS: ERROR: (CODE:4 MEDIA_ERR_SRC_NOT_SUPPORTED) The media could not be loaded, either because the server or network failed or because the format is not supported. 

我也试着跟着，但没用

<video id="player-vjs_html5_api" class="vjs-tech" crossorigin="anonymous" preload="auto">
    <source src="" type="video/mp4" />
    <source src="" type="video/webm" />
    <source src="" type="video/ogv" />
  <p class="vjs-no-vjs">Your browser does not support video.</p>
</video>

---

但它也不起作用。

当我做以下更改时，它就起作用了。刚刚删除crossorigin=anonymous

---

你有没有一个MP4不起作用的例子？@misterben：当我删除crossorigin=anonymous时，它起作用了。如果它影响到其他地方，请告诉我。

VIDEOJS: ERROR: (CODE:4 MEDIA_ERR_SRC_NOT_SUPPORTED) The media could not be loaded, either because the server or network failed or because the format is not supported. 

<video id="player-vjs_html5_api" class="vjs-tech" crossorigin="anonymous" preload="auto">
    <source src="" type="video/mp4" />
    <source src="" type="video/webm" />
    <source src="" type="video/ogv" />
  <p class="vjs-no-vjs">Your browser does not support video.</p>
</video>

  loadMedia: function(path) {
    player.src([
        { type: "video/mp4", src: path+".mp4" },
        { type: "video/webm", src: path+".webm" },
        { type: "video/ogg", src: path+".ogv" }
    ]);
    return void 0;
  }

<video id="player-vjs_html5_api" class="vjs-tech" preload="auto">
    <source src="" type="video/mp4" />
    <source src="" type="video/webm" />
    <source src="" type="video/ogv" />
  <p class="vjs-no-vjs">Your browser does not support video.</p>
</video>

loadMedia: function(path) {
    player.src([
        { type: "video/mp4", src: path+".mp4" },
        { type: "video/webm", src: path+".webm" },
        { type: "video/ogg", src: path+".ogv" }
    ]);
    return void 0;
  }