I am using UIImagePicker for selecting video from library and trying to use the video in my application.For this I am using code like this
picker = [[UIImagePickerController alloc] init];
picker.sourceType = UIImagePickerControllerSourceTypeSavedPhotosAlbum;
picker.delegate = self;
picker.mediaTypes=[NSArray arrayWithObject:(NSString*)kUTTypeMovie];
[self presentModalViewController:picker animated:YES];
Now the problem is that when any video is selected it shows compressing video message alongwith a progress bar.Meanwhile If I send my app in background I want to cancel this compression and dismismodalviewController so that corrupted compression does not occur.Is there any way to avoid this compression or to handle this so that result is either in success or in failure.Setting videoQuality is not solving the problem.
In my case, the URL coming from UIImagePickerControllerMediaType was nil. The solution was getting the video URL from UIImagePickerControllerReferenceURL:
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
NSURL* url = [info objectForKey:UIImagePickerControllerReferenceURL];
//... read video with ALAssetsLibrary
}
Further info on how to read the video can be found here: How to save video from assets url
Related
I am new in ios development. I am doing a photo cropper app.
I want to browse an image from the iPhone picture library by clicking browse button (that I added in my app) and load it to UIImageview that I placed in a view.
How can I browse the image ?.
Is it possible to browse the complete phone memory ? (Just like asp:FileUpload).
Is there any control available in iPhone to use just like asp:FileUpload ?
Thanks in advance.
Super easy to do!
UIImagePickerController *imagePicker = [[UIImagePickerController alloc] init];
imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
[imagePicker setDelegate:self];
[self presentModalViewController:imagePicker animated:YES];
and
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
[picker dismissModalViewControllerAnimated:YES];
[picker release];
// Edited image works great (if you allowed editing)
//myUIImageView.image = [info objectForKey:UIImagePickerControllerEditedImage];
// AND the original image works great
//myUIImageView.image = [info objectForKey:UIImagePickerControllerOriginalImage];
// AND do whatever you want with it, (NSDictionary *)info is fine now
//UIImage *myImage = [info objectForKey:UIImagePickerControllerEditedImage];
UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
[customImageView setImage:image];
customImageView.contentMode = UIViewContentModeScaleAspectFill;
}
got this code from stackoverflow, didn't save the URL, sorry.
The whole file system is not available, if you're running a non-jailbroken phone. Neither are there filesystem browser controls (for the same reason), However, you can browse the user's photo library, or even take a photo with the camera using UIImagePickerController. Docs: http://developer.apple.com/library/ios/#documentation/uikit/reference/UIImagePickerController_Class/UIImagePickerController/UIImagePickerController.html
iPhone camera delayed after taking picture in flash mode, I used UIImagePicker controller and used takePicture for capturing the picture, it is working well in all modes except if the flash mode is on. when it is on it is taking some time to process the image. why is this happening. Can anybody help me in this. my code is below.
to take picture i used
[picker takePicture];
after user took the picture...
imagePickerController:didFinishPickingMediaWithInfo:(NSDictionary *)info
{
[picker dismissModelviewControllerAnimated:YES];
}
I find it takes a while to process the picture under any sitaution. In my didFinishPickingMediaWithInfo I load up a view over the top of my main view to tell the user I'm processing the image.
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *picture = [info valueForKey:UIImagePickerControllerOriginalImage];
[self dismissModalViewControllerAnimated:YES];
[self performSelectorInBackground:#selector(processImage:) withObject:picture];
_activityView = [[PSActivityView alloc] initWithFrame:CGRectZero];
_activityView.text = NSLocalizedString(#"Processing...", nil);
[self.view addSubview:_activityView];
[self.view bringSubviewToFront:_activityView];
}
The PSActivityView class sizes itself in the layoutSubViews method and the processImage method deals with the image and dismisses the _activityView when it's finished.
Seems to keep users happy with my app.
Hey guys i was curious if anybody could give me a very brief description of how to make an app record video in iOs 4. I know how to do all the media and whatnot using the os 3 method of using the UIImagePickerController but I do not know if that is still available in iOs4 and if not, could someone please give me a very brief description on how to do it using the new method? (No code required, but is more than welcome.)
-Thank you!
It's pretty straightforward.
I just made a view-based app with a single button on the interface to test this. The button's action is - (IBAction)shootButtonPressed;
You have to check if the device supports video recording and then configure the image picker controller to only shoot video. This code will only work on an actual device.
In the main view controller header, I made it conform to two protocols: UIImagePickerControllerDelegate and UINavigationControllerDelegate
Then I implemented the button press method like this;
- (IBAction)shootButtonPressed;
{
BOOL canShootVideo = [UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera];
if (canShootVideo) {
UIImagePickerController *videoRecorder = [[UIImagePickerController alloc] init];
videoRecorder.sourceType = UIImagePickerControllerSourceTypeCamera;
videoRecorder.delegate = self;
NSArray *mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypeCamera];
NSArray *videoMediaTypesOnly = [mediaTypes filteredArrayUsingPredicate:[NSPredicate predicateWithFormat:#"(SELF contains %#)", #"movie"]];
BOOL movieOutputPossible = (videoMediaTypesOnly != nil);
if (movieOutputPossible) {
videoRecorder.mediaTypes = videoMediaTypesOnly;
[self presentModalViewController:videoRecorder animated:YES];
}
[videoRecorder release];
}
}
You also have to implement two more methods to handle when a movie's shot & chosen and when the user cancels the video camera picker.
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
[self dismissModalViewControllerAnimated:YES];
// save the movie or something here, pretty much the same as doing a photo
NSLog(#"movie captured %#", info);
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
// process the cancellation of movie picker here
NSLog(#"Capture cancelled");
}
Super easy.
For more details, see the Multimedia Programming Guide --> About Audio and Video --> Using Video --> Recording and Editing Video. It's in the Apple Docs, although a little scattered for my taste.
I am writing a simple video uploader application on iPhone 3GS where I first direct the user to photos album, and then select the video to share or upload. I am using the UIImagePickerController in the following way:
videoPickerCtrl = [[UIImagePickerController alloc] init];
videoPickerCtrl.delegate = self;
videoPickerCtrl.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
videoPickerCtrl.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:videoPickerCtrl.sourceType];
videoPickerCtrl.allowsImageEditing = NO;
videoPickerCtrl.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMovie];
[window addSubview:videoPickerCtrl.view];
But I can see that once the controller is invoked, there is a disturbing video trimming interface that is presented. Once I press "choose", the video is always trimmed no matter whether I touch the trimming controls or not. Is there any way to get around this trimming interface and directly get the path of the video file ?
You should set allowsEditing = NO; instead of allowsImageEditing = NO; (which has been deprecated in 3.1). Then, the trimming interface should not appear unless the selected movie is longer than 10 minutes (from the docs: "Maximum movie duration is 10 minutes. If a user picks a movie that is longer in duration than 10 minutes, they are forced to trim it before saving it.").
Interesting problem. This is just for information should anyone else be looking at this. On iPad OS 3.2 I have found some problems retrieving video, although the picker works and I can select video from albums and not just from the camera roll.
Here's my working code frag
The call
NSArray *mediaTypesAllowed = [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypePhotoLibrary];
[picker setMediaTypes:mediaTypesAllowed];
picker.delegate = self;
picker.allowsEditing = NO;
picker.wantsFullScreenLayout = YES;
if(!IsEmpty(self.editBackgroundPopover)){
[self.editBackgroundPopover setContentViewController:picker animated:YES];
}
And here is the delegate method
imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
[self.editBackgroundPopover dismissPopoverAnimated:true];
NSString* mediaType = [info objectForKey:UIImagePickerControllerMediaType];
//not production code, do not use hard coded string in real app
if ( [ mediaType isEqualToString:#"public.image" ]) {
NSLog(#"Picked a photo");
}
//not production code, do not use hard coded string in real app
else if ( [ mediaType isEqualToString:#"public.movie" ]){
NSLog(#"Picked a movie at URL %#", [info objectForKey:UIImagePickerControllerMediaURL]);
NSURL *url = [info objectForKey:UIImagePickerControllerMediaURL];
NSLog(#"> %#", [url absoluteString]);
}
[[picker self] dismissModalViewControllerAnimated:YES];
}
However the video URL which I retrieve from the picker has the form
file:/localhost/private/var/mobile/Applications/C6FAC491-D27D-45A6-B805-951727ED2CEC/tmp/-Tmp-/trim.KOzqps.MOV
So it looks to me that the Video might be being processed through the trimming code even if I'm selecting the video as a whole. Note also that the movie, originally of type m4v when I loaded it through iTunes is of type MOV, which is of course unplayable on the device! I did try playing the URL but I received an alert saying "This kind of movie can't be played"
I don't quite understand what Apple is playing at here, the API appears not to really be usable as a way of loading and playing video from the photo library.
Hopefully IOS 4 will be more forthcoming, but for my iPad app, that's still months away.
Ok so I got it working long back after carefully looking at SDK docs. I am able to get videos from Camera Roll directory on my 3GS. But I can not find any way in which UIImagePickerController can choose video from directories other than Camera Roll(for instance, device's Photo Library where the user syncs videos through iTunes). Is there any standard way in SDK to do that ?
I am using UIImagePickerController to record a video with the sourceType set to UIImagePickerControllerSourceTypeCamera.
I have set allowsEditing to true so that the video can be edited before the picker returns. But after I edit the video using the trimming interface and press "Pick", I only get back the original recording in the delegate, not the trimmed version. What am I doing wrong? I am using iPhone OS 3.1.3. I remember this used to work in an earlier version but it seems to be failing in the latest OS. Any help is appreciated?
By the way i confirmed that if the source of the video is UIImagePickerControllerSourceTypeSavedPhotosAlbum, the trimming works in version 3.1.3. So trimming with source as the camera is failing. Interestingly with the camera-roll/photos-album as the source, a "Choose" button appears and soon after clicking it, the controller displays a message saying the "Video is being trimmed ... ". I don't get this message when using the camera source.
Here is a snippet of the code I am using to record a video using the camera source.
- (void) recordVideo {
UIImagePickerController *picker = [[UIImagePickerController alloc] init];
picker.delegate = self;
picker.allowsEditing = YES;
picker.sourceType = UIImagePickerControllerSourceTypeCamera;
picker.mediaTypes = [NSArray arrayWithObject:(NSString *)kUTTypeMovie];
picker.videoQuality = UIImagePickerControllerQualityTypeHigh;
[self presentModalViewController:picker animated:YES];
[picker release];
}
My delegate implementation is as follows:
- (void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo: (NSDictionary *)info {
[picker dismissModalViewControllerAnimated:YES];
self.videoPath = [[info objectForKey:UIImagePickerControllerMediaURL] path];
...
}
Thanks a lot,
kris.
Just ran into this myself ... and found this post when looking for a solution.
looks like the only way around this is to copy the file to your app's directory, then open the UIVideoEditorController ...
Anyone know if this UIImagePickerController newly-captured video not being trimmed issue is a bug in the SDK, or are we doing something wrong?