自动录制视频15秒钟，并将其保存到目录中 [英] Record a video automatically for 15 secs and save it to directory

问题描述

当我按下一个按钮时，我想从iphone设备自动录制视频，录制15秒后，视频应该停止播放，并且我想将视频保存到目录中.

I want to record a video from my iphone device automatically when i press a button and after recording for 15 secs the video should stop and i want to save the video to the directory.

我尝试使用图像选择器，但是为此，我们需要手动按开始按钮以开始视频记录.我希望当用户按下按钮时，摄像头应该开始对视频进行重新编码.

I have tried using imagepicker but for that we need to manually press start button to start video recording. I want that when user presses a button camera should start recoding video.

谢谢.

推荐答案

您可以使用UIImagePickerController本身来执行此操作.您提到需要手动按开始"按钮，但这不对.

You can do this by using UIImagePickerController itself. You mentioned that you need to press start button manually but that is not right.

请参阅 Apple的文档

有一些实例方法可用于通过代码捕获视频.startVideoCapture和stopVideoCapture.

There are instance method available for capturing video by code.startVideoCapture and stopVideoCapture.

在按钮的单击上实例化imagePicker对象.然后调用以下方法.

On button's click instantiate imagePicker object.. and than call following method.

[yourImagePickerObject startVideoCapture];

之后，您可以调用计时器或延迟15 dec后执行选择器，然后可以调用

After that you can either call timer or perform selector after delay of 15 dec and can call

[yourImagePickerObject stopVideoCapture];

此方法将调用图像选择器的委托方法– imagePickerController:didFinishPickingMediaWithInfo:

this method will call your image picker's delegate method – imagePickerController:didFinishPickingMediaWithInfo:

您可以在此处处理媒体并将其写入文档目录.

you can here handle the media and write it to document directory.

更新

在单击按钮时，您正在呈现图像选择器并调用startVideoCapture方法，即使此方法不起作用，也只是尝试在presentModalView行之后尝试跟踪按钮的事件:

On button's click you are presenting image picker and calling the startVideoCapture method than even this is not working than just try following on button's event after presentModalView line:

int64_t delayInSeconds = 1.0;
dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, delayInSeconds * NSEC_PER_SEC);
dispatch_after(popTime, dispatch_get_main_queue(), ^(void){
    [yourImagePickerobj startVideoCapture];
    [objImgPicker performSelector:@selector(stopVideoCapture) withObject:nil afterDelay:15];
});

您可以尝试通过更改delayInSeconds的值来进行尝试. 希望这会有所帮助:)

You can try by changing the delayInSeconds' value. Hope this helps :)

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