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    <p>You can have the UIImagePickerController enable trimming</p> <pre><code>UIImagePickerController *videoRecorder = [[UIImagePickerController alloc]init]; NSArray *sourceTypes = [UIImagePickerController availableMediaTypesForSourceType:videoRecorder.sourceType]; NSLog(@"Available types for source as camera = %@", sourceTypes); if (![sourceTypes containsObject:(NSString*)kUTTypeMovie] ) { UIAlertView *alert = [[UIAlertView alloc] initWithTitle:nil message:@"Device Not Supported for video Recording." delegate:self cancelButtonTitle:@"Yes" otherButtonTitles:@"No",nil]; [alert show]; [alert release]; return; } videoRecorder.allowsEditing = YES; </code></pre> <p>Unfortunately after you get back from the imagePickerController, You are forced to convert the video manually.</p> <pre><code>-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info { if ([self.popoverLibraryBrowser isPopoverVisible]) { [self.popoverLibraryBrowser dismissPopoverAnimated:YES]; } NSString *type = [info objectForKey:UIImagePickerControllerMediaType]; if ([type isEqualToString:(NSString *)kUTTypeVideo] || [type isEqualToString:(NSString *)kUTTypeMovie]) { // movie != video NSURL *videoURL = [info objectForKey:UIImagePickerControllerMediaURL]; NSNumber *start = [info objectForKey:@"_UIImagePickerControllerVideoEditingStart"]; NSNumber *end = [info objectForKey:@"_UIImagePickerControllerVideoEditingEnd"]; // if start and end are nil then clipping was not used. // You should use the entire video. int startMilliseconds = ([start doubleValue] * 1000); int endMilliseconds = ([end doubleValue] * 1000); NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; NSFileManager *manager = [NSFileManager defaultManager]; NSString *outputURL = [documentsDirectory stringByAppendingPathComponent:@"output"] ; [manager createDirectoryAtPath:outputURL withIntermediateDirectories:YES attributes:nil error:nil]; outputURL = [outputURL stringByAppendingPathComponent:@"output.mp4"]; // Remove Existing File [manager removeItemAtPath:outputURL error:nil]; //[self loadAssetFromFile:videoURL]; [self.recorder dismissModalViewControllerAnimated:YES]; AVURLAsset *videoAsset = [AVURLAsset URLAssetWithURL:videoURL options:nil]; AVAssetExportSession *exportSession = [[AVAssetExportSession alloc] initWithAsset:videoAsset presetName:AVAssetExportPresetHighestQuality]; exportSession.outputURL = [NSURL fileURLWithPath:outputURL]; exportSession.outputFileType = AVFileTypeQuickTimeMovie; CMTimeRange timeRange = CMTimeRangeMake(CMTimeMake(startMilliseconds, 1000), CMTimeMake(endMilliseconds - startMilliseconds, 1000)); exportSession.timeRange = timeRange; [exportSession exportAsynchronouslyWithCompletionHandler:^{ switch (exportSession.status) { case AVAssetExportSessionStatusCompleted: // Custom method to import the Exported Video [self loadAssetFromFile:exportSession.outputURL]; break; case AVAssetExportSessionStatusFailed: // NSLog(@"Failed:%@",exportSession.error); break; case AVAssetExportSessionStatusCancelled: // NSLog(@"Canceled:%@",exportSession.error); break; default: break; } }]; //NSData *videoData = [NSData dataWithContentsOfURL:videoURL]; //NSString *videoStoragePath;//Set your video storage path to this variable //[videoData writeToFile:videoStoragePath atomically:YES]; //You can store the path of the saved video file in sqlite/coredata here. } } </code></pre>
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    1. POHow to trim the video using AVFoundation
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    1. COThanks for the source. When I use "*sourceTypes" as "UIImagePickerControllerSourceTypeCamera", I am getting "*start and *end time". But when I use "*sourceTypes" as "UIImagePickerControllerSourceTypeSavedPhotosAlbum", I am not getting "start and end" time. What is the problem? How can I get the "start and end" time?
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    2. CODid you give them the ability to "Clip" the video ? The portion that populates the editing start and end is the clipping. If you dont clip the video, then these values are left nil which in turn means that the clipping should be skipped and the entire video should be used.
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    3. COPlease refer the log here http://pastebin.com/uMU1k61T . I am allowing the user to select the frames from the thumbnail. No problem, if i edit the "Camera recorded video" and the problem happens when i try to select the frames from the videos loaded from the album.
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