How to get video from photoGallery using UIImagePickerController in iOS? - ios

Question

I want to get video from photoGallery when I click video button and which is displayed in same view. I have written this code, but don't get video into the imageview on same view.
- (IBAction)vedioClicked:(id)sender
{
imagePicker = [[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.allowsEditing = YES;
imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
imagePicker.mediaTypes =
[[NSArray alloc] initWithObjects: (NSString *) kUTTypeMovie, nil];
[self presentViewController:imagePicker animated:YES completion:nil];
}
- (void) imagePickerController: (UIImagePickerController *) picker didFinishPickingMediaWithInfo: (NSDictionary *) info
{
NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
if ([mediaType isEqualToString:(NSString *)kUTTypeImage])
{
UIImage *editedImage = (UIImage *)[info objectForKey:#"UIImagePickerControllerOriginalImage"];
// Compressing the image size
CGSize newSize = CGSizeMake(400, 400);
UIGraphicsBeginImageContext(newSize);
[editedImage drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
// Get the new image from the context
inputImage = UIGraphicsGetImageFromCurrentImageContext();
self.imageView.image=inputImage;
// End the context
UIGraphicsEndImageContext();
NSData *data = UIImageJPEGRepresentation(inputImage,0.2);//PNGRepresentation(imgView.image);
}
else if ([mediaType isEqualToString:#"public.movie"]){
NSURL *videoURL = [info objectForKey:UIImagePickerControllerMediaURL];
}
self.imageView.image=inputImage;
[picker dismissViewControllerAnimated:YES completion:nil];
}
video is getting from photo library but its not display into imageView on same view so anybody help me to do this.Any help is more appreciated.

Answer 1

We can't directly display video in UIImageView. If we try to load directly it will display black screen only. To display video in UIImageView we need to load the first frame of video. For this need to import two frameworks.
1.AVFoundation
2.AssetsLibrary
Using these two we can display first frame of video into UIImageView as follows:
- (void) imagePickerController: (UIImagePickerController *) picker didFinishPickingMediaWithInfo: (NSDictionary *) info
{
NSString *mediaType = [info objectForKey:UIImagePickerControllerMediaType];
if ([mediaType isEqualToString:(NSString *)kUTTypeImage])
{
UIImage *editedImage = (UIImage *)[info objectForKey:#"UIImagePickerControllerOriginalImage"];
// Compressing the image size
CGSize newSize = CGSizeMake(400, 400);
UIGraphicsBeginImageContext(newSize);
[editedImage drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
// Get the new image from the context
inputImage = UIGraphicsGetImageFromCurrentImageContext();
self.imageView.image=inputImage;
// End the context
UIGraphicsEndImageContext();
NSData *data = UIImageJPEGRepresentation(inputImage,0.2);//PNGRepresentation(imgView.image);
}
else if ([mediaType isEqualToString:#"public.movie"])
{
NSURL *videoURL = [info objectForKey:UIImagePickerControllerMediaURL];
AVAsset *avAsset = [AVURLAsset URLAssetWithURL:videoURL options:nil];
if ([[avAsset tracksWithMediaType:AVMediaTypeVideo] count] > 0)
{
AVAssetImageGenerator *imageGenerator =[AVAssetImageGenerator assetImageGeneratorWithAsset:avAsset];
Float64 durationSeconds = CMTimeGetSeconds([avAsset duration]);
CMTime midpoint = CMTimeMakeWithSeconds(durationSeconds/2.0, 600);
NSError *error;
CMTime actualTime;
CGImageRef halfWayImage = [imageGenerator copyCGImageAtTime:kCMTimeZero actualTime:&actualTime error:&error];
if (halfWayImage != NULL)
{
NSString *actualTimeString = (NSString *)CFBridgingRelease(CMTimeCopyDescription(NULL, actualTime));
NSString *requestedTimeString = (NSString *)CFBridgingRelease(CMTimeCopyDescription(NULL, midpoint));
NSLog(#"Got halfWayImage: Asked for %#, got %#", requestedTimeString, actualTimeString);
UIImage *img=[UIImage imageWithCGImage:halfWayImage];
self.imageView.image=img;
}
}
}
[picker dismissViewControllerAnimated:YES completion:nil];
}