Solution 1: Create a new CMTimeRange
and insertTimeRange
in AVMutableCompositionTrack
if (videoAsset.duration>audioAsset.duration)
{
//new time range
CMTime duration = CMTimeMakeWithSeconds(CMTimeGetSeconds(videoAsset.duration)-CMTimeGetSeconds(audioAsset.duration), audioAsset.duration.timescale);
if (CMTIME_IS_VALID(duration))
{
CMTimeRange video_timeRange2 = CMTimeRangeMake(audioAsset.duration,duration);
//start from where left
CMTime nextClipStartTime2 = audioAsset.duration;
//add in AVMutableCompositionTrack
[b_compositionVideoTrack insertTimeRange:video_timeRange2 ofTrack:[[videoAsset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0] atTime:nextClipStartTime2 error:nil];
}
else
NSLog(@"time is invalid");
}
NOTE: not tested but it should work.
EDIT:
Solution 2: Try this. Don't use my code and replace this line below with yours
[b_compositionAudioTrack insertTimeRange:audio_timeRange ofTrack:[[audioAsset tracksWithMediaType:AVMediaTypeAudio] objectAtIndex:0] atTime:kCMTimeInvalid error:nil];