CODEWITHSUNDEEP
ioscore-audioavaudioplayer
user1495306
user1495306

Reputation: 131

Issue with merging audio file in ios

I am trying to merge 4 audio files and play them. following is the code

- (BOOL) combineVoices {

NSMutableArray * arr=[[NSMutableArray alloc] init];

[arr addObject:@"player_4_full"];
[arr addObject:@"event_1_1_1"];
[arr addObject:@"team_2_1"];
[arr addObject:@"event_1_1_2"];

NSError *error = nil;
BOOL ok = NO;

CMTime nextClipStartTime = kCMTimeZero;
//Create AVMutableComposition Object.This object will hold our multiple AVMutableCompositionTrack.
AVMutableComposition *composition = [[AVMutableComposition alloc] init];

AVMutableCompositionTrack *compositionAudioTrack = [composition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];


for(NSString * str in arr)
{
    NSString *path = [[NSBundle mainBundle] pathForResource:str ofType:@"mp3"];
    NSURL *url = [[NSURL alloc] initFileURLWithPath:path];

    AVAsset *avAsset = [[AVURLAsset alloc] initWithURL:url options:nil];

    NSArray *tracks = [avAsset tracksWithMediaType:AVMediaTypeAudio];
    if ([tracks count] == 0)
        return NO;

    NSLog(@"%@",avAsset);
    CMTimeRange timeRangeInAsset = CMTimeRangeMake(kCMTimeZero, [avAsset duration]);
    AVAssetTrack *clipAudioTrack = [[avAsset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0];
    ok = [compositionAudioTrack insertTimeRange:timeRangeInAsset  ofTrack:clipAudioTrack atTime:nextClipStartTime error:&error];
    if (!ok) {
        NSLog(@"Current Video Track Error: %@",error);
    }
    nextClipStartTime = CMTimeAdd(nextClipStartTime, timeRangeInAsset.duration);
}

NSLog(@"%@",composition);
self.item = [[AVPlayerItem alloc] initWithAsset:composition];
self.p =[AVPlayer playerWithPlayerItem:item];
[self.p play];
return YES;
}

The problem is after merging i am able to play the sound in simulator. But when i am playing it on device then i am getting the sound only in headphone but not on speakers

Upvotes: 1

Views: 786

Answers (2)

Kiran Patel
Kiran Patel

Reputation: 964

Set AVAudioSession before play

AVAudioSession *audioSession = [AVAudioSession sharedInstance];
[audioSession setCategory:AVAudioSessionCategorySoloAmbient withOptions:AVAudioSessionCategoryOptionDefaultToSpeaker error:nil];

Upvotes: 1

Bijoy Thangaraj
Bijoy Thangaraj

Reputation: 5546

It is possible your device may be soft-muted. If your device is iPhone, please try toggling the side switch.

The iPad has an interesting mute quirk, which can result in no sound coming from certain apps over your iPad speaker, even though volume is turned up and you can hear the sound with headphones. In order to fix this, you need to follow the instructions below

  • Double-tap the home button
  • Swipe from left to right
  • Tap the speaker icon to the far left (*)
  • It should show “Mute Off” below the play button
  • Listen to app sound once again

enter image description here

(*) If you do not see the speaker icon, this feature is assigned to the side switch. In that case, just toggling the side switch should unmute your iPad speakers. The option to set the side switch function to Lock Rotation or Mute can be found under Settings.

Upvotes: 1

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