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android - 如何通过 ACTION_VIDEO_CAPTURE 操作将文件输出设置为 mp4?

转载 作者:太空狗 更新时间:2023-10-29 14:54:01 29 4
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当我使用我的 native 应用相机拍摄视频时,输出文件的扩展名为 3gp。我需要使用 ACTION_VIDEO_CAPTURE Intent 操作来拍摄相机,这将生成一个文件扩展名为 mp4 的文件。我该怎么做?

最佳答案

您可以继续尝试 dis 代码:

intent = new Intent(android.provider.MediaStore.ACTION_VIDEO_CAPTURE);    
fileUri = getOutputMediaFile(MEDIA_TYPE_VIDEO); // create a file to save the video in specific folder (this works for video only)
intent.putExtra(MediaStore.EXTRA_OUTPUT, fileUri);
intent.putExtra(MediaStore.EXTRA_VIDEO_QUALITY, 1); // set the video image quality to high

// start the Video Capture Intent
startActivityForResult(intent, REQUEST_VIDEO_CAPTURED_NEXUS);

捕获完成后调用

protected void onActivityResult(int requestCode, int resultCode, Intent data) {

if (resultCode == Activity.RESULT_OK) {
switch (requestCode) {
case REQUEST_VIDEO_CAPTURED_NEXUS:
this.videoFromCamera(resultCode, data);
break;

default:
break;
}
}
}

private void videoFromCamera(int resultCode, Intent 数据) {

    if(fileUri != null) {
Log.d(TAG, "Video saved to:\n" + fileUri);
Log.d(TAG, "Video path:\n" + fileUri.getPath());
Log.d(TAG, "Video name:\n" + getName(fileUri));
// use uri.getLastPathSegment() if store in folder
//use the file Uri.
}
}

通过以下方法获取输出的媒体文件uri

public Uri getOutputMediaFile(int type)
{
// To be safe, you should check that the SDCard is mounted

if(Environment.getExternalStorageState() != null) {
// this works for Android 2.2 and above
File mediaStorageDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_MOVIES), "SMW_VIDEO");

// This location works best if you want the created images to be shared
// between applications and persist after your app has been uninstalled.

// Create the storage directory if it does not exist
if (! mediaStorageDir.exists()) {
if (! mediaStorageDir.mkdirs()) {
Log.d(TAG, "failed to create directory");
return null;
}
}

// Create a media file name
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss").format(new Date());
File mediaFile;
if(type == MEDIA_TYPE_VIDEO) {
mediaFile = new File(mediaStorageDir.getPath() + File.separator +
"VID_"+ timeStamp + ".mp4");
} else {
return null;
}

return Uri.fromFile(mediaFile);
}

return null;
}

这将以纯 MP4 格式保存捕获的视频。

关于android - 如何通过 ACTION_VIDEO_CAPTURE 操作将文件输出设置为 mp4?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/32883934/

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