[Xperia Z2 Android Development] WiwiPouPou:
Here is what the log says about recording instant crash :

09-20 20:13:27.517 E/SemcCameraUI(20361): CameraDevice:getZoom: params is null.
09-20 20:13:28.534 E/SemcCameraUI(20361): ThumbnailFactory:Assume this is a corrupt video file.
09-20 20:13:28.534 E/SemcCameraUI(20361): ThumbnailFactory:createMicroThumbnail() can't create a Micro thumbnail.
09-20 20:13:28.642 E/SemcCameraUI(20361): ThumbnailFactory:Assume this is a corrupt video file.
09-20 20:13:28.642 E/SemcCameraUI(20361): ThumbnailFactory:createMicroThumbnail() can't create a Micro thumbnail.
09-20 20:13:49.972 E/SemcCameraUI(4559): CameraDevice:getZoom: params is null.
09-20 20:13:50.506 E/SemcCameraUI(4559): ThumbnailFactory:Assume this is a corrupt video file.
09-20 20:13:50.506 E/SemcCameraUI(4559): ThumbnailFactory:createMicroThumbnail() can't create a Micro thumbnail.
09-20 20:13:50.597 E/SemcCameraUI(4559): ThumbnailFactory:Assume this is a corrupt video file.
09-20 20:13:50.597 E/SemcCameraUI(4559): ThumbnailFactory:createMicroThumbnail() can't create a Micro thumbnail.
09-20 20:13:50.675 E/SemcCameraUI(4559): ThumbnailFactory:Assume this is a corrupt video file.
09-20 20:13:50.676 E/SemcCameraUI(4559): ThumbnailFactory:createMicroThumbnail() can't create a Micro thumbnail.
09-20 20:14:16.969 E/SemcCameraUI(4559): ThumbnailFactory:Assume this is a corrupt video file.
09-20 20:14:16.969 E/SemcCameraUI(4559): ThumbnailFactory:createMicroThumbnail() can't create a Micro thumbnail.
09-20 20:14:37.004 E/SemcCameraUI(4559): CameraDevice:setPictureSize: params is null.
09-20 20:14:37.004 E/SemcCameraUI(4559): CameraDevice:setSmileCapture: params is null.
09-20 20:14:37.014 E/SemcCameraUI(4559): CameraDevice:setFlashMode: params is null.
09-20 20:14:37.469 E/SemcCameraUI(4559): ThumbnailFactory:Assume this is a corrupt video file.
09-20 20:14:37.470 E/SemcCameraUI(4559): ThumbnailFactory:createMicroThumbnail() can't create a Micro thumbnail.
09-20 20:14:38.503 E/SemcCameraUI(4559): CameraDevice:setFlashMode: params is null.
09-20 20:14:38.503 E/SemcCameraUI(4559): CameraDevice:setZoom: params is null.
09-20 20:14:38.503 E/SemcCameraUI(4559): CameraDevice:getMaxZoom: params is null.
09-20 20:14:38.503 E/SemcCameraUI(4559): CameraDevice:getMaxSrZoom: params is null.
09-20 20:14:38.503 E/SemcCameraUI(4559): CameraDevice:setFocusRect: params is null.
09-20 20:16:10.810 E/SemcCameraUI(4559): CameraDevice:getZoom: params is null.
09-20 20:16:10.923 E/SemcCameraUI(4559): ThumbnailFactory:Assume this is a corrupt video file.
09-20 20:16:10.923 E/SemcCameraUI(4559): ThumbnailFactory:createMicroThumbnail() can't create a Micro thumbnail.
09-20 20:16:23.927 E/SemcCameraUI(4559): CameraDevice:eek:pen camera failed.
09-20 20:16:23.927 E/SemcCameraUI(4559): java.util.concurrent.ExecutionException: java.lang.RuntimeException: Camera is being used after Camera.release() was called
09-20 20:16:23.927 E/SemcCameraUI(4559):	at java.util.concurrent.FutureTask.report(FutureTask.java:93)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at java.util.concurrent.FutureTask.get(FutureTask.java:177)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.CameraDevice.joinOpenCameraDeviceTask(CameraDevice.java:3011)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.CameraDevice.clearResumeDeviceTask(CameraDevice.java:3207)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.CameraFunctions.prepareForFinish(CameraFunctions.java:193)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.CameraFunctions.finish(CameraFunctions.java:203)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.StateTransitionController$IdleForFinish.entry(StateTransitionController.java:593)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.ControllerMessageHandler.setState(ControllerMessageHandler.java:85)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.Executor.setState(Executor.java:40)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.StateTransitionController$ActiveState.handleAbort(StateTransitionController.java:496)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.ControllerMessageHandler.dispatch(ControllerMessageHandler.java:256)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.ControllerMessageHandler.dispatchEvent(ControllerMessageHandler.java:165)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.Executor.sendEvent(Executor.java:55)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.Executor.sendEmptyEvent(Executor.java:59)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.Executor.sendEmergencyEvent(Executor.java:82)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.ControllerManager.abort(ControllerManager.java:123)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.CameraActivity.onPause(CameraActivity.java:585)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.app.Activity.performPause(Activity.java:6101)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.app.Instrumentation.callActivityOnPause(Instrumentation.java:1310)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3352)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3325)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.app.ActivityThread.handlePauseActivity(ActivityThread.java:3300)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.app.ActivityThread.access$1000(ActivityThread.java:156)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1362)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.os.Handler.dispatchMessage(Handler.java:102)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.os.Looper.loop(Looper.java:211)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.app.ActivityThread.main(ActivityThread.java:5373)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at java.lang.reflect.Method.invoke(Native Method)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at java.lang.reflect.Method.invoke(Method.java:372)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1020)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:815)
09-20 20:16:23.927 E/SemcCameraUI(4559): Caused by: java.lang.RuntimeException: Camera is being used after Camera.release() was called
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.hardware.Camera.setHasPreviewCallback(Native Method)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.hardware.Camera.setPreviewCallback(Camera.java:802)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.PreviewFrameRetriever.unregisterPreviewCallback(PreviewFrameRetriever.java:169)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.PreviewFrameRetriever.dettachCamera(PreviewFrameRetriever.java:86)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.PreviewFrameRetriever.attachCamera(PreviewFrameRetriever.java:74)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.PreviewFrameRetriever.attachCamera(PreviewFrameRetriever.java:69)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.CameraDevice.open(CameraDevice.java:307)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.CameraDevice.openCameraDeviceWithRetry(CameraDevice.java:2886)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.CameraDevice.access$1500(CameraDevice.java:106)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.CameraDevice$OpenCameraDeviceTask.call(CameraDevice.java:2856)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.CameraDevice$OpenCameraDeviceTask.call(CameraDevice.java:2842)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at java.util.concurrent.FutureTask.run(FutureTask.java:237)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:11
09-20 20:16:23.927 E/SemcCameraUI(4559): CameraDevice:SetupCameraDeviceTask failed.
09-20 20:16:23.927 E/SemcCameraUI(4559): java.util.concurrent.ExecutionException: java.lang.RuntimeException: Camera initialization failed because the camera device was already opened
09-20 20:16:23.927 E/SemcCameraUI(4559):	at java.util.concurrent.FutureTask.report(FutureTask.java:93)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at java.util.concurrent.FutureTask.get(FutureTask.java:177)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.CameraDevice.joinSetupCameraDeviceTask(CameraDevice.java:3119)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.CameraDevice.clearResumeDeviceTask(CameraDevice.java:3211)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.CameraFunctions.prepareForFinish(CameraFunctions.java:193)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.CameraFunctions.finish(CameraFunctions.java:203)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.StateTransitionController$IdleForFinish.entry(StateTransitionController.java:593)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.ControllerMessageHandler.setState(ControllerMessageHandler.java:85)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.Executor.setState(Executor.java:40)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.StateTransitionController$ActiveState.handleAbort(StateTransitionController.java:496)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.ControllerMessageHandler.dispatch(ControllerMessageHandler.java:256)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.ControllerMessageHandler.dispatchEvent(ControllerMessageHandler.java:165)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.Executor.sendEvent(Executor.java:55)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.Executor.sendEmptyEvent(Executor.java:59)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.controller.Executor.sendEmergencyEvent(Executor.java:82)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.ControllerManager.abort(ControllerManager.java:123)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.CameraActivity.onPause(CameraActivity.java:585)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.app.Activity.performPause(Activity.java:6101)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.app.Instrumentation.callActivityOnPause(Instrumentation.java:1310)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3352)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.app.ActivityThread.performPauseActivity(ActivityThread.java:3325)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.app.ActivityThread.handlePauseActivity(ActivityThread.java:3300)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.app.ActivityThread.access$1000(ActivityThread.java:156)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1362)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.os.Handler.dispatchMessage(Handler.java:102)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.os.Looper.loop(Looper.java:211)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at android.app.ActivityThread.main(ActivityThread.java:5373)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at java.lang.reflect.Method.invoke(Native Method)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at java.lang.reflect.Method.invoke(Method.java:372)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1020)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:815)
09-20 20:16:23.927 E/SemcCameraUI(4559): Caused by: java.lang.RuntimeException: Camera initialization failed because the camera device was already opened
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.cameraextension.CameraExtension.<init>(CameraExtension.java:221)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.cameraextension.CameraExtension.open(CameraExtension.java:193)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.CameraDevice.open(CameraDevice.java:271)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.CameraDevice.openCameraDeviceWithRetry(CameraDevice.java:2886)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.CameraDevice.access$1500(CameraDevice.java:106)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.CameraDevice$SetupCameraDeviceTask.isCameraAvailable(CameraDevice.java:3328)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at com.sonyericsson.android.camera.device.CameraDevice$SetupCameraDeviceTask.run(CameraDevice.java:3263)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:422)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at java.util.concurrent.FutureTask.run(FutureTask.java:237)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
09-20 20:16:23.927 E/SemcCameraUI(4559):	at java.lang.Thread.run(Thread.java:818)

I'm on your latest release, LB coming from KitKat rooted.