iPad 1 unable to record MPEG4AAC recording?

Question

I have been trying to record kAudioFormatMPEG4AAC format on iPad app, the recording is working fine on iPad2 & iPad3, but not on iPad1. Here iPad1 & iPad3 have iOS 5.1, and iPad2 has iOS 5.0.1.

The code for recording is like..

if(recordEncoding == ENC_PCM)
{
    [recordSettings setObject:[NSNumber numberWithInt: kAudioFormatLinearPCM] forKey: AVFormatIDKey];
    [recordSettings setObject:[NSNumber numberWithFloat:44100.0] forKey: AVSampleRateKey];
    [recordSettings setObject:[NSNumber numberWithInt:2] forKey:AVNumberOfChannelsKey];
    [recordSettings setObject:[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];
    [recordSettings setObject:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsBigEndianKey];
    [recordSettings setObject:[NSNumber numberWithBool:NO] forKey:AVLinearPCMIsFloatKey];   
}
else
{
    NSNumber *formatObject;

    switch (recordEncoding) {
        case (ENC_AAC): 
            formatObject = [NSNumber numberWithInt: kAudioFormatMPEG4AAC];
            break;
        case (ENC_ALAC):
            formatObject = [NSNumber numberWithInt: kAudioFormatAppleLossless];
            break;
        case (ENC_IMA4):
            formatObject = [NSNumber numberWithInt: kAudioFormatAppleIMA4];
            break;
        case (ENC_ILBC):
            formatObject = [NSNumber numberWithInt: kAudioFormatiLBC];
            break;
        case (ENC_ULAW):
            formatObject = [NSNumber numberWithInt: kAudioFormatULaw];
            break;
        default:
            formatObject = [NSNumber numberWithInt: kAudioFormatAppleIMA4];
    }

    [recordSettings setObject:formatObject forKey: AVFormatIDKey];
    [recordSettings setObject:[NSNumber numberWithFloat:44100.0] forKey: AVSampleRateKey];
    [recordSettings setObject:[NSNumber numberWithInt:2] forKey:AVNumberOfChannelsKey];
    [recordSettings setObject:[NSNumber numberWithInt:12800] forKey:AVEncoderBitRateKey];
    [recordSettings setObject:[NSNumber numberWithInt:16] forKey:AVLinearPCMBitDepthKey];
    [recordSettings setObject:[NSNumber numberWithInt: AVAudioQualityHigh] forKey: AVEncoderAudioQualityKey];
}

Can anyone help me with this problem. One this is for sure, MPEG4AAC works on iPAD 1 as this post suggests

none, the AudioFile is created, though its of oo:oo secs on disc, and size usually 29 KB. This is only for iPad 1. On iPad2 & 3, everythings working fine. — Haris Hussain, May 10 '12 at 11:41

score 0 · Answer 1 · answered May 10 '12 at 12:31

0

Try to comment AVEncoderBitRateKey line. Also AVLinearPCMBitDepthKey is not needed for AAC.

answered May 10 '12 at 12:31

Shmidt

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not working still, i tried all the iterations possible.. Commenting AVEncoderBitRateKey, AVLinearPCMBitDepthKey each one once, then both. None worked. – Haris Hussain May 10 '12 at 13:00

iPad 1 unable to record MPEG4AAC recording?

1 Answers1