ios - 如何将我们的iOS设备中存储或捕获的.mov文件转换为.mp4格式？

Question

我正在开发该应用程序，该应用程序在ios设备上执行时可以正常运行，但是在播放从Android设备中从应用程序上传的视频时，.mov格式不支持。

我的代码可以正常工作，但需要.mp4格式的视频

-(void)openLibrary
{
    cameraUI = [[UIImagePickerController alloc] init];
    [cameraUI setDelegate:self];

    [cameraUI setSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
    cameraUI.mediaTypes = [[NSArray alloc] initWithObjects:(NSString *)kUTTypeMovie, nil];
    [cameraUI setAllowsEditing:YES];
    cameraUI.tabBarController.tabBar.backgroundColor = [UIColor whiteColor];
    [self presentViewController:cameraUI animated:YES completion:nil];

}

- (BOOL) startCameraControllerFromViewController: (UIViewController*) controller
                                   usingDelegate: (id <UIImagePickerControllerDelegate,
                                                   UINavigationControllerDelegate>) delegate {

    if (([UIImagePickerController isSourceTypeAvailable:
          UIImagePickerControllerSourceTypeCamera] == NO)
        || (delegate == nil)
        || (controller == nil))
        return NO;


    cameraUI = [[UIImagePickerController alloc] init];
    cameraUI.sourceType = UIImagePickerControllerSourceTypeCamera;

    // Displays a control that allows the user to choose movie capture
    cameraUI.mediaTypes = [[NSArray alloc] initWithObjects: (NSString *) kUTTypeMovie, nil];

    // Hides the controls for moving & scaling pictures, or for
    // trimming movies. To instead show the controls, use YES.
    cameraUI.allowsEditing = NO;

    cameraUI.delegate = delegate;

    [controller presentViewController:cameraUI animated:YES completion:nil];
    return YES;
}
- (void) imagePickerController: (UIImagePickerController *) picker
 didFinishPickingMediaWithInfo: (NSDictionary *) info {

    NSString *mediaType = [info objectForKey: UIImagePickerControllerMediaType];

    [self dismissViewControllerAnimated:YES completion:nil];

    // Handle a movie capture

    if (CFStringCompare (( CFStringRef) mediaType, kUTTypeMovie, 0) == kCFCompareEqualTo) {
        NSUserDefaults *def =[NSUserDefaults standardUserDefaults];
        NSString *docDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
        NSString *moviePath = [[info objectForKey:UIImagePickerControllerMediaURL] path];
        videoPath =[NSString stringWithFormat:@"%@/xyz.mov",docDir];


        if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum (moviePath))
        {
            NSURL *videoURL = [info objectForKey:UIImagePickerControllerMediaURL];
            NSData *videoData = [NSData dataWithContentsOfURL:videoURL];
            [videoData writeToFile:videoPath atomically:NO];

            [def setValue:videoPath forKey:@"videoPath"];

        }
        AVPlayerItem *playerItem = [AVPlayerItem playerItemWithURL:[info objectForKey:UIImagePickerControllerMediaURL]];
        CMTime duration = playerItem.duration;
        float seconds = CMTimeGetSeconds(duration);
        NSLog(@"seconds : %f",seconds);
        if (seconds > 10) {
            [def removeObjectForKey:@"videoPath"];
            _lblVideo.hidden = TRUE;
            [self.view makeToast:@"Select video which is less than 10 seconds" duration:2.0 position:@"center"];

        }
        else
        {
            _lblVideo.hidden = FALSE;
            NSLog(@"Length is not greater than 10");
            [self.view makeToast:@"Word is ready for posting" duration:2.0 position:@"center"];
        }
    }

}

好吧，我正在寻找一个好的解决方案，而不是根本无法使用的扩展更改解决方案。

Answer 1

当您保存录制的视频时，请如下手动更改.mp4

//您的loaca目录

NSArray *dirPaths;
NSString *docsDir;

dirPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
docsDir = [dirPaths objectAtIndex:0];
NSString* mp4FilePath = [docsDir stringByAppendingPathComponent:@"recordedVideo.mp4"];