【Android】用MediaRecorder錄制視頻太短崩的問題

本文轉載自查看原文 2014-10-30 15:16 20039 4、Android/ android MediaRecorder 崩潰

具體表現：

調用MediaRecorder的start()與stop()間隔不能小於1秒(有時候大於1秒也崩)，否則必崩。

錯誤信息：

java.lang.RuntimeException: stop failed.

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

解決辦法：

在stop以前調用setOnErrorListener(null);就行了！

相關代碼：

   /** 開始錄制 */
    @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);

                 // 設置視頻輸出的格式和編碼
                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的手機會有問題

                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;
    }

     /** 停止錄制 */
    @Override
     public void stopRecord() {
         long endTime = System.currentTimeMillis();
         if (mMediaRecorder != null) {
             // 設置后不會崩
            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;
    }

     /** 釋放資源 */
    @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);
    }

代碼片段引自拍攝SDK Vitamio Recorder 2.0：http://www.cnblogs.com/over140/p/3704580.html

結尾吐槽：

1、這個bug太2了！！

2、Instagram你是怎么發現的？！

后續補充：

1、如果單獨設置不管用，請參考代碼部分的完整代碼設置。

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