我需要录制视频并保存，但出现错误start()媒体记录器方法：失败 - 19（这个错误应该是什么？文档中没有对此进行评论:( ）
第二天我正在与这个错误作斗争，我尝试了多个代码（谷歌教程，英特尔示例，...）我在网络上找到了所有代码，但无法使其中任何一个工作。请帮我找出导致问题的原因。我什至开始怀疑我的手机（SE live，wt19i）是否能够录制视频（但默认相机应用程序工作正常）。真的吗，please,有人知道吗我应该尝试/检查/修复什么?
这是我的录制代码：
public boolean record()
{
// if already recording, return
if( recording ) return false;
// We are recording
recording = true;
// log start of the method
System.out.println("CameraPreview::record() - Method start");
// Have tried to stop preview before record - didnt help
//mCamera.stopPreview();
mCamera.unlock();
mRecorder = new MediaRecorder();
// have tried this listener to get some extra info (doesnt work)
mRecorder.setOnErrorListener(new MediaRecorder.OnErrorListener() {
public void onError(MediaRecorder mr, int what, int extra) {
System.out.println("MediaRecorder::onError listener:"+what+" - "+extra);
}
});
mRecorder.setCamera(mCamera);
// Set media recorder properties
mRecorder.setAudioSource(MediaRecorder.AudioSource.CAMCORDER);
mRecorder.setVideoSource(MediaRecorder.VideoSource.CAMERA);
mRecorder.setProfile( CamcorderProfile.get( CamcorderProfile.QUALITY_LOW ) );
// have tried to set format without profile - didnt help
//mRecorder.setOutputFormat(MediaRecorder.OutputFormat.MPEG_4);
//mRecorder.setAudioEncoder(MediaRecorder.AudioEncoder.AMR_NB);
//mRecorder.setVideoEncoder(MediaRecorder.VideoEncoder.MPEG_4_SP);
mRecorder.setOutputFile("/sdcard/MVR_video.3gp");
mRecorder.setPreviewDisplay(mHolder.getSurface());
// Prepare media recorder
try {
mRecorder.prepare();
} catch (Exception e) {
Log.d("MyVideoRecord", "Error preparing media recorder: " + e.getMessage());
System.out.println("CameraPreview::record() - prepare() thrown an exception");
stopRecord();
return false;
}
// Have tried to wait until prepare is done - didnt help
try {Thread.sleep(1000); } catch( Exception e){}
try {
mRecorder.start();
} catch (Exception e) {
Log.d("MyVideoRecord", "Error starting media recorder: " + e.getMessage());
System.out.println("CameraPreview::record() - start() thrown an exception");
System.out.println("Exception: "+e.getMessage());
e.printStackTrace();
stopRecord();
return false;
}
System.out.println("CameraPreview::record() - Method returning TRUE");
return true;
}
我在清单文件中收到了相机、存储卡和音频的权限请求。我已经设定最小SdkVersion到 10 并目标到 15
Here is LogCat
I/System.out(3990): CameraPreview::record() - Method start
I/MediaRecorderJNI(3990): prepare: surface=0x1f8e10 (identity=171)
E/MediaRecorder(3990): start failed: -19
D/MyVideoRecord(3990): Error starting media recorder: start failed.
I/System.out(3990): CameraPreview::record() - start() thrown an exception
I/System.out(3990): Exception: start failed.
W/System.err(3990): java.lang.RuntimeException: start failed.
W/System.err(3990): at android.media.MediaRecorder.start(Native Method)
W/System.err(3990): at com.example.myvideorecord.CameraPreview.record(CameraPreview.java:142)
W/System.err(3990): at com.example.myvideorecord.MainActivity.onOptionsItemSelected(MainActivity.java:101)
W/System.err(3990): at android.app.Activity.onMenuItemSelected(Activity.java:2502)
W/System.err(3990): at com.android.internal.policy.impl.PhoneWindow.onMenuItemSelected(PhoneWindow.java:969)
W/System.err(3990): at com.android.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:735)
W/System.err(3990): at com.android.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:149)
W/System.err(3990): at com.android.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:874)
W/System.err(3990): at com.android.internal.view.menu.IconMenuView.invokeItem(IconMenuView.java:468)
W/System.err(3990): at com.android.internal.view.menu.IconMenuItemView.performClick(IconMenuItemView.java:126)
W/System.err(3990): at android.view.View$PerformClick.run(View.java:14263)
W/System.err(3990): at android.os.Handler.handleCallback(Handler.java:605)
W/System.err(3990): at android.os.Handler.dispatchMessage(Handler.java:92)
W/System.err(3990): at android.os.Looper.loop(Looper.java:137)
W/System.err(3990): at android.app.ActivityThread.main(ActivityThread.java:4441)
W/System.err(3990): at java.lang.reflect.Method.invokeNative(Native Method)
W/System.err(3990): at java.lang.reflect.Method.invoke(Method.java:511)
W/System.err(3990): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784)
W/System.err(3990): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551)
W/System.err(3990): at dalvik.system.NativeStart.main(Native Method)
EDIT:
我正在添加我的清单文件：
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.myvideorecord"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="10"
android:targetSdkVersion="15" />
<application
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen"
android:debuggable="true" >
<activity
android:name=".MainActivity"
android:label="@string/title_activity_main"
android:screenOrientation="landscape" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".CameraPreview"
android:screenOrientation="landscape"
></activity>
</application>
<uses-permission android:name="android.permission.CAMERA" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.RECORD_AUDIO"/>
<uses-feature android:name="android.hardware.camera" />
</manifest>
EDIT2
我尝试过运行这个应用程序on my 表亲暴民（它的SE，但另一个模型）和它工作没有任何问题。由于我的手机没有 Android 更新，我尝试通过原始的“索尼电脑伴侣”软件“修复”它。我希望它能在之后工作，因为我猜想在没有任何“黑客”的情况下降级 Android 版本是不可能的
EDIT3
我尝试过升级甚至降级手机上的固件。什么也没有变。我正在考虑在客户支持或 XDA 论坛上写文章，并要求任何拥有相同手机的人尝试运行它。
