Android 推流SDK使用报错

直播推流端调用mMediaRecorder.startRecord(url)报错，信息如下
android.media.MediaCodec$CodecException: start failed
at android.media.MediaCodec.native_start(Native Method)
at android.media.MediaCodec.start(MediaCodec.java:1888)
at com.duanqu.qupai.android.media.MediaCodecSession.start(MediaCodecSession.java:28)
at com.duanqu.qupai.camera.MediaCodecRecorder.init(MediaCodecRecorder.java:167)
at com.duanqu.qupai.live.LiveVideoStream.init(LiveVideoStream.java:102)
at com.alibaba.livecloud.live.AlivcMediaRecorderExt.startRecord(AlivcMediaRecorderExt.java:187)