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    <p>Hope my code could help you guys. It's ugly. I think apple should open this kind of APIs. Of course, all NSLog() should be removed. It's just for demonstration.</p> <p>alvin</p> <pre><code>- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{ // e.g. NSString *tempFilePath = [(NSURL *)[info valueForKey:UIImagePickerControllerMediaURL] absoluteString]; NSLog(@"didFinishPickingMediaWithInfo: %@",tempFilePath); // e.g. /private/var/mobile/Applications/D1E784A4-EC1A-402B-81BF-F36D3A08A332/tmp/capture/capturedvideo.MOV tempFilePath = [[tempFilePath substringFromIndex:16] retain]; NSLog(@"didFinishPickingMediaWithInfo: %@",tempFilePath); NSLog(@"===Try to save video to camera roll.==="); NSLog(@"UIVideoAtPathIsCompatibleWithSavedPhotosAlbum: %@",UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(tempFilePath)? @"YES":@"NO"); // Check if the video file can be saved to camera roll. if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(tempFilePath)){ // YES. Copy it to the camera roll. UISaveVideoAtPathToSavedPhotosAlbum(tempFilePath, self, @selector(video:didFinishSavingWithError:contextInfo:), tempFilePath); } [self dismissModalViewControllerAnimated:YES]; } - (void)video:(NSString *)videoPath didFinishSavingWithError:(NSError *)error contextInfo:(NSString *)contextInfo{ NSLog(@"didFinishSavingWithError--videoPath in camera roll:%@",videoPath); NSLog(@"didFinishSavingWithError--videoPath in temp directory:%@",contextInfo); // The thumbnail jpg should located in this directory. NSString *thumbnailDirectory = [[contextInfo stringByDeletingLastPathComponent] stringByDeletingLastPathComponent]; // Debug info. list all files in the directory of the video file. // e.g. /private/var/mobile/Applications/D1E784A4-EC1A-402B-81BF-F36D3A08A332/tmp/capture NSLog([contextInfo stringByDeletingLastPathComponent]); NSLog([[[NSFileManager defaultManager] contentsOfDirectoryAtPath:[contextInfo stringByDeletingLastPathComponent] error:nil] description]); // Debug info. list all files in the parent directory of the video file, i.e. the "~/tmp" directory. // e.g. /private/var/mobile/Applications/D1E784A4-EC1A-402B-81BF-F36D3A08A332/tmp NSLog(thumbnailDirectory); NSLog([[[NSFileManager defaultManager] contentsOfDirectoryAtPath:thumbnailDirectory error:nil] description]); /////////////////// // Find the thumbnail for the video just recorded. NSString *file,*latestFile; NSDate *latestDate = [NSDate distantPast]; NSDirectoryEnumerator *dirEnum = [[NSFileManager defaultManager] enumeratorAtPath:[[contextInfo stringByDeletingLastPathComponent]stringByDeletingLastPathComponent]]; // Enumerate all files in the ~/tmp directory while (file = [dirEnum nextObject]) { // Only check files with jpg extension. if ([[file pathExtension] isEqualToString: @"jpg"]) { NSLog(@"***latestDate:%@",latestDate); NSLog(@"***file name:%@",file); NSLog(@"***NSFileSize:%@", [[dirEnum fileAttributes] valueForKey:@"NSFileSize"]); NSLog(@"***NSFileModificationDate:%@", [[dirEnum fileAttributes] valueForKey:@"NSFileModificationDate"]); // Check if current jpg file is the latest one. if ([(NSDate *)[[dirEnum fileAttributes] valueForKey:@"NSFileModificationDate"] compare:latestDate] == NSOrderedDescending){ latestDate = [[dirEnum fileAttributes] valueForKey:@"NSFileModificationDate"]; latestFile = file; NSLog(@"***latestFile changed:%@",latestFile); } } } // The thumbnail path. latestFile = [NSTemporaryDirectory() stringByAppendingPathComponent:latestFile]; NSLog(@"****** The thumbnail file should be this one:%@",latestFile); // Your code ... // Your code ... // Your code ... } </code></pre>
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    1. POiphone sdk > 3.0 . Video Thumbnail?
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    1. COWow this worked like a charm. Thanks so much.
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    2. COit's showing error invalid receiver type void*
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    3. COTo Rahul Vyas, The code is used in my project and it's running well.
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