【Android】用MediaRecorder录制视频太短崩的问题

 

具体表现：

调用MediaRecorder的start()与stop()间隔不能小于1秒(有时候大于1秒也崩)，否则必崩。

 

错误信息：

java.lang.RuntimeException: stop failed.

 at android.media.MediaRecorder.stop(Native Method)

解决办法：

在stop以前调用setOnErrorListener(null);就行了！

 

相关代码：

    /** 开始录制 */
    @Override
    public MediaPart startRecord() {
        if (mMediaObject != null && mSurfaceHolder != null && !mRecording) {
            MediaPart result = mMediaObject.buildMediaPart(mCameraId, ".mp4");

            try {
                if (mMediaRecorder == null) {
                    mMediaRecorder = new MediaRecorder();
                    mMediaRecorder.setOnErrorListener(this);
                } else {
                    mMediaRecorder.reset();
                }

                // Step 1: Unlock and set camera to MediaRecorder
                camera.unlock();
                mMediaRecorder.setCamera(camera);
                mMediaRecorder.setPreviewDisplay(mSurfaceHolder.getSurface());

                // Step 2: Set sources
                mMediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);//before setOutputFormat()
                mMediaRecorder.setAudioSource(MediaRecorder.AudioSource.MIC);//before setOutputFormat()

                mMediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);

                //设置视频输出的格式和编码
                CamcorderProfile mProfile = CamcorderProfile.get(CamcorderProfile.QUALITY_480P);
                //                mMediaRecorder.setProfile(mProfile);
                mMediaRecorder.setVideoSize(640, 480);//after setVideoSource(),after setOutFormat()
                mMediaRecorder.setAudioEncodingBitRate(44100);
                if (mProfile.videoBitRate > 2 * 1024 * 1024)
                    mMediaRecorder.setVideoEncodingBitRate(2 * 1024 * 1024);
                else
                    mMediaRecorder.setVideoEncodingBitRate(mProfile.videoBitRate);
                mMediaRecorder.setVideoFrameRate(mProfile.videoFrameRate);//after setVideoSource(),after setOutFormat()

                mMediaRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AAC);//after setOutputFormat()
                mMediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.H264);//after setOutputFormat()

                //mMediaRecorder.setVideoEncodingBitRate(800);

                // Step 4: Set output file
                mMediaRecorder.setOutputFile(result.mediaPath);

                // Step 5: Set the preview output
                //                mMediaRecorder.setOrientationHint(90);//加了HTC的手机会有问题

                Log.e("Yixia", "OutputFile:" + result.mediaPath);

                mMediaRecorder.prepare();
                mMediaRecorder.start();
                mRecording = true;
                return result;
            } catch (IllegalStateException e) {
                e.printStackTrace();
                Log.e("Yixia", "startRecord", e);
            } catch (IOException e) {
                e.printStackTrace();
                Log.e("Yixia", "startRecord", e);
            } catch (Exception e) {
                e.printStackTrace();
                Log.e("Yixia", "startRecord", e);
            }
        }
        return null;
    }

    /** 停止录制 */
    @Override
    public void stopRecord() {
        long endTime = System.currentTimeMillis();
        if (mMediaRecorder != null) {
            //设置后不会崩
            mMediaRecorder.setOnErrorListener(null);
            mMediaRecorder.setPreviewDisplay(null);
            try {
                mMediaRecorder.stop();
            } catch (IllegalStateException e) {
                Log.w("Yixia", "stopRecord", e);
            } catch (RuntimeException e) {
                Log.w("Yixia", "stopRecord", e);
            } catch (Exception e) {
                Log.w("Yixia", "stopRecord", e);
            }
        }

        if (camera != null) {
            try {
                camera.lock();
            } catch (RuntimeException e) {
                Log.e("Yixia", "stopRecord", e);
            }
        }

        mRecording = false;
    }

    /** 释放资源 */
    @Override
    public void release() {
        super.release();
        if (mMediaRecorder != null) {
            mMediaRecorder.setOnErrorListener(null);
            try {
                mMediaRecorder.release();
            } catch (IllegalStateException e) {
                Log.w("Yixia", "stopRecord", e);
            } catch (Exception e) {
                Log.w("Yixia", "stopRecord", e);
            }
        }
        mMediaRecorder = null;
    }

    @Override
    public void onError(MediaRecorder mr, int what, int extra) {
        try {
            if (mr != null)
                mr.reset();
        } catch (IllegalStateException e) {
            Log.w("Yixia", "stopRecord", e);
        } catch (Exception e) {
            Log.w("Yixia", "stopRecord", e);
        }
        if (mOnErrorListener != null)
            mOnErrorListener.onVideoError(what, extra);
    }

代码片段引自拍摄SDK Vitamio Recorder 2.0：http://www.cnblogs.com/over140/p/3704580.html

 

结尾吐槽：

1、这个bug太2了！！

2、Instagram你是怎么发现的？！ 

 

后续补充：

1、如果单独设置不管用，请参考代码部分的完整代码设置。