I have an app which makes recordings using AVAudioRecorder. Its works and saves the audio files just fine. But when I rebuild the app, the audio files are deleted.
Is that normal? I would have thought so, but just wanted to make sure. I can't find anything about this online. Does Xcode delete any new files made by the app, each time a new build is made?
UPDATE
The code I am using to record the audio is as follows:
// Setup audio recorder to save file.
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
[audioSession setActive:YES error:nil];
[audio_recorder setDelegate:self];
// Set the recording options such as quality.
NSMutableDictionary *settings = [NSMutableDictionary dictionary];
[settings setValue:[NSNumber numberWithInt:kAudioFormatLinearPCM] forKey:AVFormatIDKey];
[settings setValue:[NSNumber numberWithFloat:8000.0] forKey:AVSampleRateKey];
[settings setValue:[NSNumber numberWithInt:1] forKey:AVNumberOfChannelsKey];
[settings setValue:[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];
[settings setValue:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
[settings setValue:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];
[settings setValue:[NSNumber numberWithInt:AVAudioQualityMax] forKey:AVEncoderAudioQualityKey];
NSArray *searchPaths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentPath_ = [searchPaths objectAtIndex:0];
NSString *pathToSave = [documentPath_ stringByAppendingPathComponent:currentDate];
// Construct the audio file save URL.
NSURL *url = [NSURL fileURLWithPath:pathToSave];
// Setup the audio recorder.
NSError *error;
audio_recorder = [[AVAudioRecorder alloc] initWithURL:url settings:settings error:&error];
if (error == nil) {
// Now begin the recording.
[audio_recorder prepareToRecord];
[audio_recorder record];
}
Thanks for your time, Dan.
Related
I'm working on audio recording and uploading. While uploading 10secs audio I'm getting the 4GB data, I browsed and followed one of the answers in StackOverflow, changed settings as shown below and audio file format to .3gp, but data size not reduced.
-(void) startRecording{
[_recordButton setTitle:#"Stop" forState:UIControlStateNormal];
NSError *error;
// Recording settings
NSLog(#"%f", [[AVAudioSession sharedInstance] sampleRate]);
NSMutableDictionary *settings = [NSMutableDictionary dictionary];
[settings setValue: [NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey:AVFormatIDKey];
[settings setValue: [NSNumber numberWithFloat:2000.0] forKey:AVSampleRateKey];
[settings setValue: [NSNumber numberWithInt: 1] forKey:AVNumberOfChannelsKey];
[settings setValue: [NSNumber numberWithInt: AVAudioQualityMax] forKey:AVEncoderAudioQualityKey];
[settings setValue:[NSNumber numberWithFloat:12000.0] forKey:AVEncoderBitRateKey];
NSArray *searchPaths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentPath_ = [searchPaths objectAtIndex: 0];
NSString *pathToSave = [documentPath_ stringByAppendingPathComponent:#"AudioName.3gp"];
// File URL
NSURL *url = [NSURL fileURLWithPath:pathToSave];//FILEPATH];
//Save recording path to preferences
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
[prefs setURL:url forKey:#"Test1"];
[prefs synchronize];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
[[AVAudioSession sharedInstance] setActive:YES error:nil];
// Create recorder
recorder = [[AVAudioRecorder alloc] initWithURL:url settings:settings error:&error];
recorder.delegate=self;
[recorder recordForDuration:10];
[self startTimerToMoveSlider];
}
Can anybody please guide me
Finally solved audio file size issue, here is my code for recording 30seconds audio and getting file size nearly 60kb-70kb.
-(void) startRecording{
[_recordButton setTitle:#"Stop" forState:UIControlStateNormal];
NSError *error;
NSString *pathToSave = [NSString stringWithFormat:#"%#/MySound.m4a", DOCUMENTS_FOLDER];
// File URL
NSURL *url = [NSURL fileURLWithPath:pathToSave];//FILEPATH];
// Recording settings
NSDictionary *settings = [NSDictionary dictionaryWithObjectsAndKeys:
[NSNumber numberWithInt: kAudioFormatMPEG4AAC], AVFormatIDKey,
[NSNumber numberWithFloat:8000.0], AVSampleRateKey,
[NSNumber numberWithInt: 1], AVNumberOfChannelsKey,[NSNumber numberWithInt:12000],AVEncoderBitRateKey,
nil];
NSData *audioData = [NSData dataWithContentsOfFile:[url path] options: 0 error:&error];
//Save recording path to preferences
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
[prefs setURL:url forKey:#"Test1"];
[prefs synchronize];
// Create recorder
recorder = [[AVAudioRecorder alloc] initWithURL:url settings:settings error:&error];
recorder.delegate=self;
[recorder prepareToRecord];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
[[AVAudioSession sharedInstance] setActive:YES error:nil];
[recorder recordForDuration:30];//recording for 30secs
[self startTimerToMoveSlider];//to move slider while recording
}
Note : #define DOCUMENTS_FOLDER [NSHomeDirectory() stringByAppendingPathComponent:#"Documents"]
I wants to record an audio in iOS (AVAudioRecorder) below code working fine
_fileName = [NSString stringWithFormat:#"Record_%#.m4a",[DateAndTimeUtil stringFromDate:[NSDate date] withFormatterString:#"HH_mm_ss_dd_MM_yyyy"]];NSArray *pathComponents = [NSArray arrayWithObjects:
[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject],
_fileName,
nil];
NSURL *outputFileURL = [NSURL fileURLWithPathComponents:pathComponents];
// Setup audio session
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
// Define the recorder setting
NSMutableDictionary *recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue:[NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];
// Initiate and prepare the recorder
audioRecorder = [[AVAudioRecorder alloc] initWithURL:outputFileURL settings:recordSetting error:nil];
audioRecorder.delegate = self;
audioRecorder.meteringEnabled = YES;
[audioRecorder prepareToRecord];`
The problem is that the recorded file shows the bit rate as 44 Kbps but I want to record audio of an average bitrate of 256Kbps with a preference for AAC codec, but also compatible with the MP3 codec and the MP4 Audio codec.
Please help me out.
_fileName = [NSString stringWithFormat:#"Record_%#.mp4",[DateAndTimeUtil stringFromDate:[NSDate date] withFormatterString:#"HH_mm_ss_dd_MM_yyyy"]];
NSArray *pathComponents = [NSArray arrayWithObjects:
[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject],
_fileName,
nil];
NSURL *outputFileURL = [NSURL fileURLWithPathComponents:pathComponents];
// Setup audio session
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
// Define the recorder setting
NSMutableDictionary *recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue:[NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];
[recordSetting setValue:[NSNumber numberWithInteger:AVAudioQualityHigh] forKey:AVEncoderAudioQualityKey];
[recordSetting setValue:[NSNumber numberWithInt:32] forKey:AVLinearPCMBitDepthKey];
[recordSetting setValue:[NSNumber numberWithInt:128000] forKey:AVEncoderBitRatePerChannelKey];
[recordSetting setValue:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
[recordSetting setValue:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];
[recordSetting setValue:[NSNumber numberWithBool:NO] forKey:AVEncoderBitDepthHintKey];
// Initiate and prepare the recorder
audioRecorder = [[AVAudioRecorder alloc] initWithURL:outputFileURL settings:recordSetting error:nil];
audioRecorder.delegate = self;
audioRecorder.meteringEnabled = YES;
[audioRecorder prepareToRecord];
By using above code i reach towards a positive solution as it was able to record audio with bit rate info. The audio has almost 256Kbps bit rate.
I'm using AVAudioRecorder to record a audio file. The code I'm using works perfectly fine in iOS 8 and below but since the latest update of iOS 9 the recording seems to have stopped working.
I tried logging the properties of AVAudioRecorder object and even after calling the "record" function in AVAudioRecorder the isRecording is showing as NO and when the "stop" function is called i get the call back in the delegate
- (void)audioRecorderDidFinishRecording:(AVAudioRecorder *)recorder successfully:(BOOL)flag; with success flag as NO
audioSession = [AVAudioSession sharedInstance];
NSError *err = nil;
[audioSession setCategory :AVAudioSessionCategoryPlayAndRecord error:&err];
if(err){
NSLog(#"audioSession: %# %ld %#", [err domain], (long)[err code], [[err userInfo] description]);
return;
}
[audioSession setActive:YES error:&err];
recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue:[NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:16000.0] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: 1] forKey:AVNumberOfChannelsKey];
[recordSetting setValue :[NSNumber numberWithInt:16] forKey:AVEncoderBitRateKey];
[recordSetting setValue :[NSNumber numberWithInt:8] forKey:AVLinearPCMBitDepthKey];
[recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
[recordSetting setValue :[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];
[recordSetting setValue :[NSNumber numberWithInt:AVAudioQualityMin] forKey:AVEncoderAudioQualityKey];
recorderFilePath = [NSString stringWithFormat:#"%#/%#.m4a", DOCUMENTS_FOLDER,#"sample"];
NSLog(#"RecorderFilePath : %#",recorderFilePath);
NSURL *url = [NSURL fileURLWithPath:recorderFilePath];
err = nil;
recorder = [[ AVAudioRecorder alloc] initWithURL:url settings:recordSetting error:&err];
//prepare to record
[recorder setDelegate:self];
[recorder prepareToRecord];
recorder.meteringEnabled = YES;
BOOL audioHWAvailable = audioSession.inputAvailable;
[recorder record];
Please advise if i'm doing something wrong in the code.
Try this:
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryRecord error:nil];
// Define the recorder setting
NSMutableDictionary *recordSetting = [[NSMutableDictionary alloc] initWithObjectsAndKeys:[NSNumber numberWithInt:kAudioFormatMPEG4AAC], AVFormatIDKey, [NSNumber numberWithFloat:44100.0], AVSampleRateKey, [NSNumber numberWithInt: 2], AVNumberOfChannelsKey,nil];
// [recordSetting setValue :[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];
// Initiate and prepare the recorder
if (recorderHelium)
{
recorderHelium = nil;
}
recorderHelium = [[AVAudioRecorder alloc] initWithURL:[NSURL fileURLWithPath:recordedAudioFilePath] settings:recordSetting error:nil];
recorderHelium.delegate = self;
recorderHelium.meteringEnabled = YES;
[recorderHelium prepareToRecord];
[recorderHelium record];
And also import and include these files:
#import <AudioToolbox/AudioServices.h>
#include <AudioToolbox/AudioToolbox.h>
I am recording audio in my app.
The app runs in my iPhone 5C with iOS 7 just fine, but it fails in the simulator (iPhone Retina 3,5-inch / 4-inch/ 4-inch 64 bit)
Here is the code to setup audio:
-(void)setupAudio{
_audioMessageLabel.text = #"...Bereit für Aufnahme...";
[_stopButton setEnabled:NO];
[_playButton setEnabled:NO];
// Set the audio file
NSString *guid = [[NSUUID new] UUIDString];
_dateiName = [NSString stringWithFormat:#"audio-notiz-%#.m4a", guid];
NSLog(#"dateiName: %#", _dateiName);
NSArray *pathComponents = [NSArray arrayWithObjects:
[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject],
_dateiName,
nil];
_outputFileURL = [NSURL fileURLWithPathComponents:pathComponents];
// Setup audio session
AVAudioSession *session = [AVAudioSession sharedInstance];
[session setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
// Define the recorder setting
NSMutableDictionary *recordSetting = [[NSMutableDictionary alloc] init];
[recordSetting setValue:[NSNumber numberWithInt:kAudioFormatMPEG4AAC] forKey:AVFormatIDKey];
[recordSetting setValue:[NSNumber numberWithFloat:44100.0] forKey:AVSampleRateKey];
[recordSetting setValue:[NSNumber numberWithInt: 2] forKey:AVNumberOfChannelsKey];
// Initiate and prepare the recorder
NSError *error = nil;
recorder = [[AVAudioRecorder alloc] initWithURL:_outputFileURL settings:recordSetting error:&error];
if (error)
{
NSLog(#"error: %#", [error localizedDescription]);
} else {
recorder.delegate = self;
recorder.meteringEnabled = YES;
[recorder prepareToRecord];
}
}
It fails in the last line [recorder prepareToRecord] with (lldb) in the console
I think the issue could be, that the ios simulator doesn't support microphone:
Is it possible to record actual sound on the simulator using mic
https://developer.apple.com/library/ios/documentation/IDEs/Conceptual/iOS_Simulator_Guide/TestingontheiOSSimulator/TestingontheiOSSimulator.html#//apple_ref/doc/uid/TP40012848-CH4-SW1
I have made 2 iPhone apps which can record audio and save it to a file and play it back again.
One of them uses AVAudiorecorder and AVAudioplayer.
The second one is Apple's SpeakHere example with Audio Queues.
Both run on Simulater as well as the Device.
BUT when I restart either app the recorded file is not found!!!
I've tried all possible suggestions found on stackoverflow but it still doesnt work!
This is what I use to save the file:
NSArray *dirPaths;
NSString *docsDir;
dirPaths = NSSearchPathForDirectoriesInDomains( NSDocumentDirectory, NSUserDomainMask, YES);
docsDir = [dirPaths objectAtIndex:0];
NSString *soundFilePath = [docsDir stringByAppendingPathComponent:#"sound1.caf"];
NSURL *soundFileURL = [NSURL fileURLWithPath:soundFilePath];
Ok I finally solved it. The problem was that I was setting up the AVAudioRecorder and file the path in the viewLoad of my ViewController.m overwriting existing files with the same name.
After recording and saving the audio to file and stopping the app, I could find the file in Finder. (/Users/xxxxx/Library/Application Support/iPhone Simulator/6.0/Applications/0F107E80-27E3-4F7C-AB07-9465B575EDAB/Documents/sound1.caf)
When I restarted the application the setup code for the recorder (from viewLoad) would just overwrite my old file called:
sound1.caf
with a new one. Same name but no content.
The play back would just play an empty new file. --> No Sound obviously.
So here is what I did:
I used NSUserdefaults to save the path of the recorded file name to be retrieved later in my playBack method.
cleaned viewLoad in ViewController.m :
- (void)viewDidLoad
{
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayAndRecord error:nil];
[audioSession setActive:YES error:nil];
[recorder setDelegate:self];
[super viewDidLoad];
}
edited record in ViewController.m :
- (IBAction) record
{
NSError *error;
// Recording settings
NSMutableDictionary *settings = [NSMutableDictionary dictionary];
[settings setValue: [NSNumber numberWithInt:kAudioFormatLinearPCM] forKey:AVFormatIDKey];
[settings setValue: [NSNumber numberWithFloat:8000.0] forKey:AVSampleRateKey];
[settings setValue: [NSNumber numberWithInt: 1] forKey:AVNumberOfChannelsKey];
[settings setValue: [NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];
[settings setValue: [NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
[settings setValue: [NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];
[settings setValue: [NSNumber numberWithInt: AVAudioQualityMax] forKey:AVEncoderAudioQualityKey];
NSArray *searchPaths =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentPath_ = [searchPaths objectAtIndex: 0];
NSString *pathToSave = [documentPath_ stringByAppendingPathComponent:[self dateString]];
// File URL
NSURL *url = [NSURL fileURLWithPath:pathToSave];//FILEPATH];
//Save recording path to preferences
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
[prefs setURL:url forKey:#"Test1"];
[prefs synchronize];
// Create recorder
recorder = [[AVAudioRecorder alloc] initWithURL:url settings:settings error:&error];
[recorder prepareToRecord];
[recorder record];
}
edited playback in ViewController.m:
-(IBAction)playBack
{
AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategoryPlayback error:nil];
[audioSession setActive:YES error:nil];
//Load recording path from preferences
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
temporaryRecFile = [prefs URLForKey:#"Test1"];
player = [[AVAudioPlayer alloc] initWithContentsOfURL:temporaryRecFile error:nil];
player.delegate = self;
[player setNumberOfLoops:0];
player.volume = 1;
[player prepareToPlay];
[player play];
}
and added a new dateString method to ViewController.m:
- (NSString *) dateString
{
// return a formatted string for a file name
NSDateFormatter *formatter = [[NSDateFormatter alloc] init];
formatter.dateFormat = #"ddMMMYY_hhmmssa";
return [[formatter stringFromDate:[NSDate date]] stringByAppendingString:#".aif"];
}
Now it can load the last recorded file via NSUserdefaults loading it with:
//Load recording path from preferences
NSUserDefaults *prefs = [NSUserDefaults standardUserDefaults];
temporaryRecFile = [prefs URLForKey:#"Test1"];
player = [[AVAudioPlayer alloc] initWithContentsOfURL:temporaryRecFile error:nil];
in (IBAction)playBack. temporaryRecFile is a NSURL variable in my ViewController class.
declared as following ViewController.h :
#interface SoundRecViewController : UIViewController <AVAudioSessionDelegate,AVAudioRecorderDelegate, AVAudioPlayerDelegate>
{
......
......
NSURL *temporaryRecFile;
AVAudioRecorder *recorder;
AVAudioPlayer *player;
}
......
......
#end