CODEWITHSUNDEEP
iosobjective-c
vikrant Rohilla
vikrant Rohilla

Reputation: 11

issue in merging audio and video file in ios

 error is Terminating app due to uncaught exception 'NSRangeException', reason: '*** -[__NSArrayM objectAtIndex:]: index 0 beyond bounds for empty array'
line :-[b_compositionAudioTrack insertTimeRange:audio_timeRange ofTrack:[[audioAsset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0] atTime:nextClipStartTime error:nil];

My code here ------------------------------

- (void) getAndPlayAVideoTest
{
    NSString *bundleDirectory = [[NSBundle mainBundle] bundlePath];

    NSString *videoOutputPath=[bundleDirectory stringByAppendingPathComponent:@"abc.mp3"];
    NSString *outputFilePath = [bundleDirectory stringByAppendingPathComponent:@"final_video.mp4"];
    if ([[NSFileManager defaultManager]fileExistsAtPath:outputFilePath])
        [[NSFileManager defaultManager]removeItemAtPath:outputFilePath error:nil];


    NSURL    *outputFileUrl = [NSURL fileURLWithPath:outputFilePath];
    NSString *filePath = [bundleDirectory stringByAppendingPathComponent:@"abc.mov"];
    AVMutableComposition* mixComposition = [AVMutableComposition composition];

    NSURL    *audio_inputFileUrl = [NSURL fileURLWithPath:filePath];
    NSURL    *video_inputFileUrl = [NSURL fileURLWithPath:videoOutputPath];

    CMTime nextClipStartTime = kCMTimeZero;

    AVURLAsset* videoAsset = [[AVURLAsset alloc]initWithURL:video_inputFileUrl options:nil];
    CMTimeRange video_timeRange = CMTimeRangeMake(kCMTimeZero,videoAsset.duration);

    AVMutableCompositionTrack *a_compositionVideoTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeVideo preferredTrackID:kCMPersistentTrackID_Invalid];
    [a_compositionVideoTrack insertTimeRange:video_timeRange ofTrack:[[videoAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0] atTime:nextClipStartTime error:nil];

    AVURLAsset* audioAsset = [[AVURLAsset alloc]initWithURL:audio_inputFileUrl options:nil];
    CMTimeRange audio_timeRange = CMTimeRangeMake(kCMTimeZero, audioAsset.duration);
    AVMutableCompositionTrack *b_compositionAudioTrack = [mixComposition addMutableTrackWithMediaType:AVMediaTypeAudio preferredTrackID:kCMPersistentTrackID_Invalid];
    [b_compositionAudioTrack insertTimeRange:audio_timeRange ofTrack:[[audioAsset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0] atTime:nextClipStartTime error:nil];

    AVAssetExportSession* _assetExport = [[AVAssetExportSession alloc] initWithAsset:mixComposition presetName:AVAssetExportPresetMediumQuality];
    _assetExport.outputFileType = @"com.apple.quicktime-movie";
    _assetExport.outputURL = outputFileUrl;

    [_assetExport exportAsynchronouslyWithCompletionHandler:
     ^(void ) {
         if (_assetExport.status == AVAssetExportSessionStatusCompleted) {

             //Write Code Here to Continue
         }
         else {
             //Write Fail Code here
         }
     }
     ];
//}
}

Upvotes: 0

Views: 977

Answers (2)

Sumeet
Sumeet

Reputation: 1055

Try using 

AVURLAsset* audioAsset = [AVURLAsset URLAssetWithURL:audio_inputFileUrl options:nil];

Upvotes: 0

Vaibhav Sharma
Vaibhav Sharma

Reputation: 1123

In that case [b_compositionAudioTrack insertTimeRange:audio_timeRange ofTrack:[[audioAsset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0] atTime:nextClipStartTime error:nil]; this cannot read array.

Because Sound/Audio is not present in the particular file.This Error is comes only on those cases,When sound/Audio is not present in the multimedia file.

Upvotes: 1

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