我正在尝试学习使用相机的onPreviewFrame回调对mp4或任何类型的视频文件进行编码。
目前，我正在尝试这篇文章中的示例代码
使用安卓媒体编解码器从相机编码H.264
不幸的是，我一直在
mediaCodec.configure（mediaFormat， null， null， MediaCodec.CONFIGURE_FLAG_ENCODE）;
从另一个帖子IllegalStateException when MediaCodec.configure Android，我注意到这是我必须为媒体编解码器设置的一些强制性值。
我尝试了所有强制性媒体编解码器的强制值，但仍然没有运气通过
非法例外。
现在我有点没有想法可以尝试了。任何建议，意见或提示将不胜感激。
谢谢
11-04 12:27:14.785 175-894/? E/mm-libcamera2﹕ PROFILE HAL: stopPreview(): E: 1383596834.803557773
11-04 12:27:14.795 175-175/? E/OMXNodeInstance﹕ !!! Observer died. Quickly, do something, ... anything...
11-04 12:27:14.795 208-5797/? E/mm-camera﹕ config_shutdown_pp Camera not in streaming mode. Returning.
11-04 12:27:14.795 208-5797/? E/mm-camera﹕ vfe_ops_deinit: E
11-04 12:27:14.825 175-5814/? E/OMX-VENC-720p﹕ ioctl VEN_IOCTL_CMD_READ_NEXT_MSG failed
11-04 12:27:14.825 175-175/? E/OMX-VENC-720p﹕ Destroy C2D instance
11-04 12:27:14.835 527-539/? E/qcom_sensors_hal﹕ hal_process_report_ind: Bad item quality: 11
11-04 12:28:17.642 6241-6247/? E/jdwp﹕ Failed sending reply to debugger: Broken pipe
11-04 12:28:17.912 527-539/? E/qcom_sensors_hal﹕ hal_process_report_ind: Bad item quality: 11
11-04 12:28:17.922 208-6264/? E/mm-camera﹕ sensor_load_chromatix: libchromatix_imx111_preview.so: 30
11-04 12:28:18.032 208-6264/? E/mm-camera﹕ vfe_ops_init: E
11-04 12:28:18.042 208-6264/? E/mm-camera﹕ vfe_legacy_stats_buffer_init: AEC_STATS_BUFNUM
11-04 12:28:18.052 208-6264/? E/mm-camera﹕ vfe_legacy_stats_buffer_init: AEC_STATS_BUFNUM
11-04 12:28:18.052 208-6264/? E/mm-camera﹕ mctl_init_stats_proc_info: snap_max_line_cnt =30096
11-04 12:28:18.213 6241-6241/? E/CamcorderProfile﹕ width: 720
11-04 12:28:18.213 6241-6241/? E/CamcorderProfile﹕ height: 480
11-04 12:28:18.213 6241-6241/? E/CamcorderProfile﹕ audioSampleRate: 48000
11-04 12:28:18.213 6241-6241/? E/CamcorderProfile﹕ videoBitRate: 5000000
11-04 12:28:18.213 6241-6241/? E/CamcorderProfile﹕ videoFrameRate: 30
11-04 12:28:18.233 175-617/? E/OMX-VENC-720p﹕ Is component secure 0
11-04 12:28:18.263 6241-6280/? E/ACodec﹕ [OMX.qcom.video.encoder.avc] does not support color format 19
11-04 12:28:18.263 6241-6280/? E/ACodec﹕ [OMX.qcom.video.encoder.avc] configureCodec returning error -2147483648
11-04 12:28:18.263 6241-6279/? E/MediaCodec﹕ Codec reported an error. (omx error 0x80001001, internalError -2147483648)
11-04 12:28:18.263 6241-6241/? E/AndroidRuntime﹕ FATAL EXCEPTION: main
java.lang.IllegalStateException
at android.media.MediaCodec.native_configure(Native Method)
at android.media.MediaCodec.configure(MediaCodec.java:259)
at com.example.mediacodec.AvcEncoder.<init>(AvcEncoder.java:40)
at com.example.mediacodec.Preview.surfaceCreated(MediaCodecActivity.java:304)
at android.view.SurfaceView.updateWindow(SurfaceView.java:571)
at android.view.SurfaceView.access$000(SurfaceView.java:86)
at android.view.SurfaceView$3.onPreDraw(SurfaceView.java:175)
at android.view.ViewTreeObserver.dispatchOnPreDraw(ViewTreeObserver.java:833)
at android.view.ViewRootImpl.performTraversals(ViewRootImpl.java:1860)
at android.view.ViewRootImpl.doTraversal(ViewRootImpl.java:1004)
at android.view.ViewRootImpl$TraversalRunnable.run(ViewRootImpl.java:5481)
at android.view.Choreographer$CallbackRecord.run(Choreographer.java:749)
at android.view.Choreographer.doCallbacks(Choreographer.java:562)
at android.view.Choreographer.doFrame(Choreographer.java:532)
at android.view.Choreographer$FrameDisplayEventReceiver.run(Choreographer.java:735)
at android.os.Handler.handleCallback(Handler.java:730)
at android.os.Handler.dispatchMessage(Handler.java:92)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:5103)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:525)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
11-04 12:28:20.135 175-617/? E/mm-libcamera2﹕ PROFILE HAL: stopPreview(): E: 1383596900.149872429
11-04 12:28:20.135 175-575/? E/OMXNodeInstance﹕ !!! Observer died. Quickly, do something, ... anything...
11-04 12:28:20.135 208-6264/? E/mm-camera﹕ config_shutdown_pp Camera not in streaming mode. Returning.
11-04 12:28:20.145 208-6264/? E/mm-camera﹕ vfe_ops_deinit: E
11-04 12:28:20.165 175-6283/? E/OMX-VENC-720p﹕ ioctl VEN_IOCTL_CMD_READ_NEXT_MSG failed
11-04 12:28:20.165 175-575/? E/OMX-VENC-720p﹕ Destroy C2D instance
11-04 12:28:20.195 527-539/? E/qcom_sensors_hal﹕ hal_process_report_ind: Bad item quality: 11
E/ACodec﹕ [OMX.qcom.video.encoder.avc] does not support color format 19
看起来您正在尝试在高通设备上使用颜色格式 19（COLOR_FormatYUV420Planar，a/k/a I420）。 在我的一台设备上进行的快速测试表明他们的编解码器需要颜色格式 21（COLOR_FormatYUV420SemiPlanar，a/k/a NV12）。
EncodeDecodeTest 源中的缓冲区到缓冲区测试演示如何查询MediaCodecInfo以获取适当的颜色格式。 由于您正在接收来自摄像机的输入，因此您需要将预览格式设置为半平面布局 （NV21），然后在将其交给媒体编解码器之前执行 U/V 交换。
如果您使用的是 Android 4.3 或更高版本，则可以跳过所有格式体操并使用Surface预览输出。 有关示例，请参阅 CameraToMpegTest 源。