Hi, I'm trying to play multiple video/audio file with AVPlayer using AVMutableComposition. Each video/audio file can process simultaneously so I set each video/audio in individual tracks. I use only local file.
let second = CMTime(seconds: 1, preferredTimescale: 1000)
let duration = CMTimeRange(start: .zero, duration: second)
var currentTime = CMTime.zero
for _ in 0...4 {
let mutableTrack = composition.addMutableTrack(
withMediaType: .audio,
preferredTrackID: kCMPersistentTrackID_Invalid
)
try mutableTrack?.insertTimeRange(
duration,
of: audioAssetTrack,
at: currentTime
)
currentTime = currentTime + second
}
When I set many audio tracks (maybe more than 5), the first part sounds a little different from original when it starts. It seems like audio's front part is skipped.
But when I set only two tracks, AVPlayer plays as same as original file.
avPlayer.play()
How can I fix it? Why do audio tracks affect that don't have any playing parts when start? Please let me know.
Mandeuk
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