How to combine video clips with different orientation using AVFoundation
I have gone with the above answer and is going good. But i am facing a problem that audio of the video is being removed. Even all of my videos have voice. But after merging the exported video is mute. Can anyone help. Thanks in Advance.
I was also facing the same problem, but i got the solution. Swift 4.2 version.
// Merge All videos.
func mergeAllVideos(completionHandler: @escaping(Bool)->Void){
mixComposition = AVMutableComposition.init()
// To capture video.
let compositionVideoTrack = mixComposition?.addMutableTrack(withMediaType: .video, preferredTrackID: kCMPersistentTrackID_Invalid)
// To capture audio.
let compositionAudioTrack = mixComposition?.addMutableTrack(withMediaType: .audio, preferredTrackID: kCMPersistentTrackID_Invalid)
var nextCliptStartTime: CMTime = CMTime.zero
// Iterate video array.
for file_url in Constants.videoFileNameArr{
// Do Merging here.
let videoAsset = AVURLAsset.init(url: file_url)
let timeRangeInAsset = CMTimeRangeMake(start: CMTime.zero, duration: videoAsset.duration);
do{
// Merge video.
try compositionVideoTrack?.insertTimeRange(CMTimeRange(start: CMTime.zero, duration: videoAsset.duration), of: videoAsset.tracks(withMediaType: .video)[0], at: nextCliptStartTime)
// Merge Audio
try compositionAudioTrack?.insertTimeRange(CMTimeRange(start: CMTime.zero, duration: videoAsset.duration), of: videoAsset.tracks(withMediaType: .audio)[0], at: nextCliptStartTime)
}catch{
print(error)
}
// Increment the time to which next clip add.
nextCliptStartTime = CMTimeAdd(nextCliptStartTime, timeRangeInAsset.duration)
}
// Add rotation to make it portrait.
let rotationTransform = CGAffineTransform(rotationAngle: CGFloat(Double.pi/2))
compositionVideoTrack!.preferredTransform = rotationTransform
// Save final file.
self.saveFinalFile(mixComposition!){
isDone in
completionHandler(true)
}
}
