我在下面的代码中播放FLV文件时犯了什么错误？
我只是改变了源标签......
<video id="player1" width="640" height="360" style="max-width:100%;" poster="http://www.mediaelementjs.com/images/big_buck_bunny.jpg" preload="none" controls playsinline webkit-playsinline>
<!--<source src="https://commondatastorage.googleapis.com/gtv-videos-bucket/CastVideos/mp4/BigBuckBunny.mp4" type="video/mp4">-->
<source src="./video/sample.flv" type="video/flv">
</video>
<script src="../build/mediaelement-and-player.js"></script>