MediaRecorder给出了启动错误或IllegalStateException
我正在使用MediaRecorder通过Android的Camera API录制视频。 我被困在一个非常奇怪的问题。
private void startRecordingVideo() {
recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
File file = getAlbumDir();
recorder.setOutputFile(file.getAbsolutePath());
recorder.setMaxDuration(50000);
recorder.setMaxFileSize(5000000);
recorder.setPreviewDisplay(CameraBridgeViewBase.surfaceHolder.getSurface());
try {
recorder.prepare();
recorder.start();
} catch (IllegalStateException | IOException e) {
e.printStackTrace();
}
}
现在这给了我MediaRecorder:启动失败:-19错误。 我检查了这一点,并说这个链接去除mediaRecorder.setVideoSize(sView.getWidth(), sView.getHeight());
但我没有使用setVideoSize(sView.getWidth(), sView.getHeight())
。 尝试和错误,我发现,如果我删除编码器recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
和recorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
应用程序不会崩溃,但会产生新的异常:
03-23 16:50:06.213 28226-28226/com.scenera.android.surveillance E/MediaRecorder: audio source is set, but audio encoder is not set
我不明白我在这里做错了什么。 任何帮助将被appriciated。 提前致谢。
问题是你没有设置相机,使用Camera 1 API,你应该先打开相机,然后解锁并将其设置到记录器。 只有在此之后,您才能继续配置MediaRecorder
(这是一个非常漂亮的API)
MediaRecorder recorder = new MediaRecorder();
Camera camera = Camera.open();
camera.unlock();
recorder.setCamera(camera);
recorder.setPreviewDisplay(surfaceHolder.getSurface());
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
File file = getAlbumDir();
recorder.setOutputFile(file.getAbsolutePath());
recorder.setMaxDuration(50000);
recorder.setMaxFileSize(5000000);
try {
recorder.prepare();
recorder.start();
} catch (IllegalStateException | IOException e) {
e.printStackTrace();
}
boolean mStartRecording=false;
首先在活动中创建此变量,然后在代码后面尝试
if( recorder == null ) {
recorder = new MediaRecorder();
recorder.setAudioSource(MediaRecorder.AudioSource.MIC);
recorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
recorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
recorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
recorder.setVideoEncoder(MediaRecorder.VideoEncoder.DEFAULT);
File file = getAlbumDir();
recorder.setOutputFile(file.getAbsolutePath());
recorder.setMaxDuration(50000);
recorder.setMaxFileSize(5000000);
recorder.setPreviewDisplay(CameraBridgeViewBase.surfaceHolder.getSurface());
}
if(!mStartRecording) {
try {
recorder.prepare();
recorder.start();
mStartRecording = true;
} catch (IOException e) {
e.printStackTrace();
}
} else {
mStartRecording = false;
recorder.stop();
recorder.reset();
recorder.release();
recorder = null;
}
试试这个,让我知道它的工作。
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