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POReceived memory warning in recording the video
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  1. POReceived memory warning in recording the video
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    copied!<p>I made an app for ipad which contains image dragging and video recording. </p> <p>It takes screenshots as recording starts and after that makes movie by appending them. </p> <p>When i record video of 5 to 10 seconds , it works fine. But as i try to record video of 1 minute or more, it crashes and gives <code>"Received memory warning"</code> in log.</p> <p>I have used the following code ;</p> <pre><code>- (IBAction)btnRecording_Pressed:(id)sender { if ([recordButton.titleLabel.text isEqualToString:@"Start Recording"]) { backButton.enabled = NO; [recordButton setTitle:@"Stop Recording" forState:UIControlStateNormal]; fileIndex = 0; recTimer = [NSTimer scheduledTimerWithTimeInterval:1.0/5.0 target:self selector:@selector(startFrameCapture) userInfo:nil repeats:YES]; [recTimer retain]; [self startRecording]; }else{ [recordButton setTitle:@"Start Recording" forState:UIControlStateNormal]; [recTimer invalidate]; [recTimer release]; [self stopRecording]; [self getFileName]; } } -(void)startFrameCapture { fileIndex++; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [paths objectAtIndex:0]; documentsDirectory = [documentsDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"Screenshot%d.jpg",fileIndex]]; [self performSelectorInBackground:@selector(newThread:) withObject:documentsDirectory]; } -(void)newThread:(NSString *)frameName{ if ([[UIScreen mainScreen] respondsToSelector:@selector(scale)]) UIGraphicsBeginImageContextWithOptions(self.view.bounds.size, NO, [UIScreen mainScreen].scale); else UIGraphicsBeginImageContext(self.view.bounds.size); [self.view.layer renderInContext:UIGraphicsGetCurrentContext()]; viewImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); imageData = UIImageJPEGRepresentation(viewImage, 1.0); [imageData writeToFile:frameName atomically:YES]; } - (void) startRecording{ if([recorder isRecording]){ NSLog(@"Stopped Recording"); [self stopRecording]; }else{ NSLog(@"Started Recording"); [self prepareRecorderNow]; [recorder record]; } } - (void) stopRecording{ NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; if([recorder isRecording]){ [recorder stop]; [recorder release]; recorder = nil; } [pool drain]; } -(void)prepareRecorderNow{ NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; AVAudioSession *audioSession = [AVAudioSession sharedInstance]; [[UIApplication sharedApplication] beginReceivingRemoteControlEvents]; NSError *err = nil; [audioSession setCategory :AVAudioSessionCategoryPlayAndRecord error:&amp;err]; if(err){ NSLog(@"audioSession: %@ %d %@", [err domain], [err code], [[err userInfo] description]); return; } [audioSession setActive:YES error:&amp;err]; err = nil; if(err){ NSLog(@"audioSession: %@ %d %@", [err domain], [err code], [[err userInfo] description]); return; } recordSetting = [[NSMutableDictionary alloc] init]; [recordSetting setValue :[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey:AVFormatIDKey]; [recordSetting setValue:[NSNumber numberWithFloat:44100] forKey:AVSampleRateKey]; [recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey]; [recordSetting setValue :[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey]; [recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey]; [recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey]; // Create a new dated file [recorderFilePath release]; recorderFilePath = [[NSString stringWithFormat:@"%@/deformed.caf", DOCUMENTS_FOLDER] retain]; NSURL *url = [NSURL fileURLWithPath:recorderFilePath]; err = nil; recorder = [[ AVAudioRecorder alloc] initWithURL:url settings:recordSetting error:&amp;err]; [recordSetting release]; if(!recorder){ NSLog(@"recorder: %@ %d %@", [err domain], [err code], [[err userInfo] description]); UIAlertView *alert = [[UIAlertView alloc] initWithTitle: @"Warning" message: [err localizedDescription] delegate: nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; [alert show]; [alert release]; return; } //prepare to record [recorder setDelegate:self]; [recorder prepareToRecord]; recorder.meteringEnabled = YES; BOOL audioHWAvailable = audioSession.inputIsAvailable; if (! audioHWAvailable) { UIAlertView *cantRecordAlert = [[UIAlertView alloc] initWithTitle: @"Warning" message: @"Audio input hardware not available" delegate: nil cancelButtonTitle:@"OK" otherButtonTitles:nil]; [cantRecordAlert show]; [cantRecordAlert release]; return; } NSLog(@"Not Over Man"); [pool drain]; } </code></pre> <p>What can be the issue ?</p> <p>Thanks!!</p>
 

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