请教关于无法播放下载的视频问题

[haxhw]

问题描述：
1 在Player播放页面修改播放器的内核为 EXO内核
修改代码：mPlayer = new CommonPlayer(this, PlayerType.EXO_PLAYER);

2 点击播放按钮无法播放下载合并的mp4的视频，报错信息
com.jeffmony.videodemo E/LoadTask: Unexpected exception loading stream
java.lang.IllegalArgumentException
.....
com.jeffmony.videodemo E/ExoPlayerImplInternal: Source error.
com.google.android.exoplayer2.upstream.Loader$UnexpectedLoaderException: Unexpected IllegalArgumentException: null
at com.google.android.exoplayer2.upstream.Loader$LoadTask.run(Loader.java:413)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1167)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:641)
at java.lang.Thread.run(Thread.java:923)
Caused by: java.lang.IllegalArgumentException....

[JeffMony]

给一个例子了。