我正在使用MediaRecorder录制视频。我的代码在2.3.3上运行良好,但在4.0.3上失败。
问题如下:代码mediaRecorder.stop()抛出了RuntimeException异常。
java.lang.RuntimeException: stop failed.
at android.media.MediaRecorder.stop(Native Method)
使用 LogCat 消息
04-05 15:10:51.815: E/MediaRecorder(15709): stop failed: -1007
更新
我发现MediaPlayer在开始播放后几乎立即报告错误(通过MediaPlayer.OnErrorListener)。错误代码为100(媒体服务器死亡),附加码为-1007。
更新2 准备MediaRecorder的代码
c = Camera.open();
...
// Step 1: Unlock and set camera to MediaRecorder
camera.unlock();
mediaRecorder.setCamera(camera);
// Step 2: Set sources
mediaRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
mediaRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
// Step 3: Set a CamcorderProfile (requires API Level 8 or higher)
CamcorderProfile profile = CamcorderProfile
.get(CamcorderProfile.QUALITY_HIGH);
// manual set up!
mediaRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
mediaRecorder.setVideoEncodingBitRate(profile.videoBitRate);
mediaRecorder.setVideoFrameRate(profile.videoFrameRate);
mediaRecorder.setVideoSize(profile.videoFrameWidth,
profile.videoFrameHeight);
mediaRecorder.setAudioChannels(profile.audioChannels);
mediaRecorder.setAudioEncodingBitRate(profile.audioBitRate);
mediaRecorder.setAudioSamplingRate(profile.audioSampleRate);
mediaRecorder.setAudioEncoder(profile.audioCodec);
//mediaRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
mediaRecorder.setVideoEncoder(profile.videoCodec);
// mediaRecorder.setProfile(profile);
// Step 4: Set output file
mediaRecorder.setOutputFile("somefile.mp4");
// Step 5: Set the preview output
mediaRecorder.setPreviewDisplay(preview.getHolder().getSurface());
// Step 6: Prepare configured MediaRecorder
try {
mediaRecorder.prepare();
} catch ...
{ release mediaRecorder}
然后我只需要调用mediaRecorder.start()。
请注意,我需要将视频编码为mp4格式。
这段代码在三星Galaxy GIO(android 2.3.3)上运行正常,在Acer E305(android 4.0.2)上出现问题。有什么想法吗? 谢谢。
MediaRecorder
对象的代码吗? - Jason RobinsonCamcorderProfile.QUALITY_LOW
,但问题仍然存在... - Alex