Ios 将视频转换为mp4格式
我是新手,尝试创建一个记录视频或从库中选择视频的应用程序,然后将视频上传到web。但这些文件在某些android设备上无法播放。所以我想把它转换成mp4格式 因此,我想问,如何将保存的Ios 将视频转换为mp4格式,ios,objective-c,uiimagepickercontroller,Ios,Objective C,Uiimagepickercontroller,我是新手,尝试创建一个记录视频或从库中选择视频的应用程序,然后将视频上传到web。但这些文件在某些android设备上无法播放。所以我想把它转换成mp4格式 因此,我想问,如何将保存的mov转换为objective-C中的mp4 仅供参考,我已经做了很多研究,但没有发现任何有用的信息 这是我的代码: - (void)openCamera { UIImagePickerController *picker = [[UIImagePickerController alloc] init];
mov
转换为objective-C
中的mp4
仅供参考,我已经做了很多研究,但没有发现任何有用的信息
这是我的代码:
- (void)openCamera {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
picker.delegate = self;
picker.showsCameraControls = YES;
picker.allowsEditing = YES;
picker.mediaTypes = [[NSArray alloc] initWithObjects: (NSString *) kUTTypeMovie, nil];
[self presentViewController:picker animated:YES completion:nil];
}
- (void) imagePickerController: (UIImagePickerController *) picker didFinishPickingMediaWithInfo: (NSDictionary *) info {
NSString *mediaType = [info objectForKey: UIImagePickerControllerMediaType];
if (CFStringCompare ((__bridge_retained CFStringRef) mediaType, kUTTypeMovie, 0) == kCFCompareEqualTo)
{
NSString *moviePath = [[info objectForKey:UIImagePickerControllerMediaURL] path];
videoURL = info[UIImagePickerControllerMediaURL];
if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(moviePath))
{
UISaveVideoAtPathToSavedPhotosAlbum(moviePath, self, nil, nil);
}
}
[self dismissViewControllerAnimated:YES completion:nil];
}
你可以退房。这可能对你有帮助
你做得对。。现在您需要将此mov文件转换为mp4,如下所示
NSString *mediaType = [info objectForKey: UIImagePickerControllerMediaType];
if (CFStringCompare ((__bridge_retained CFStringRef) mediaType, kUTTypeMovie, 0) == kCFCompareEqualTo)
{
if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(moviePath))
{
NSString *docDir = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];
NSString *moviePath = [[info objectForKey:UIImagePickerControllerMediaURL] path];
NSString *videoPath1 =[NSString stringWithFormat:@"%@/xyz.mov",docDir];
NSURL *videoURL = [info objectForKey:UIImagePickerControllerMediaURL];
NSData *videoData = [NSData dataWithContentsOfURL:videoURL];
[videoData writeToFile:videoPath1 atomically:NO];
// UISaveVideoAtPathToSavedPhotosAlbum(moviePath, self, nil, nil);
}
}
AVURLAsset *avAsset = [AVURLAsset URLAssetWithURL:[NSURL fileURLWithPath:videoPath1] options:nil];
NSArray *compatiblePresets = [AVAssetExportSession exportPresetsCompatibleWithAsset:avAsset];
if ([compatiblePresets containsObject:AVAssetExportPresetLowQuality])
{
AVAssetExportSession *exportSession = [[AVAssetExportSession alloc]initWithAsset:avAsset presetName:AVAssetExportPresetPassthrough];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
videoPath = [NSString stringWithFormat:@"%@/xyz.mp4", [paths objectAtIndex:0]];
exportSession.outputURL = [NSURL fileURLWithPath:videoPath];
NSLog(@"videopath of your mp4 file = %@",videoPath); // PATH OF YOUR .mp4 FILE
exportSession.outputFileType = AVFileTypeMPEG4;
// CMTime start = CMTimeMakeWithSeconds(1.0, 600);
// CMTime duration = CMTimeMakeWithSeconds(3.0, 600);
// CMTimeRange range = CMTimeRangeMake(start, duration);
// exportSession.timeRange = range;
// UNCOMMENT ABOVE LINES FOR CROP VIDEO
[exportSession exportAsynchronouslyWithCompletionHandler:^{
switch ([exportSession status]) {
case AVAssetExportSessionStatusFailed:
NSLog(@"Export failed: %@", [[exportSession error] localizedDescription]);
break;
case AVAssetExportSessionStatusCancelled:
NSLog(@"Export canceled");
break;
default:
break;
}
UISaveVideoAtPathToSavedPhotosAlbum(videoPath, self, nil, nil);
[exportSession release];
}];
}
[self dismissViewControllerAnimated:YES completion:nil];
可能重复的