Iphone 在Swift中合并视频数组
我正在尝试合并AVSSET阵列中的视频,但我只能获得第一个和最后一个视频。阵列之间的视频显示黑色区域。 检查我正在使用的代码。Iphone 在Swift中合并视频数组,iphone,swift,video,video-processing,Iphone,Swift,Video,Video Processing,我正在尝试合并AVSSET阵列中的视频,但我只能获得第一个和最后一个视频。阵列之间的视频显示黑色区域。 检查我正在使用的代码。 func mergeVideoArray() { let mixComposition = AVMutableComposition() for videoAsset in videoURLArray { let videoTrack = mixComposition.addMutableTrack(wi
func mergeVideoArray() {
let mixComposition = AVMutableComposition()
for videoAsset in videoURLArray {
let videoTrack =
mixComposition.addMutableTrack(withMediaType: AVMediaType.video,
preferredTrackID: Int32(kCMPersistentTrackID_Invalid))
do {
try videoTrack?.insertTimeRange(CMTimeRangeMake(kCMTimeZero, videoAsset.duration),
of: videoAsset.tracks(withMediaType: AVMediaType.video).first!,
at: totalTime)
videoSize = (videoTrack?.naturalSize)!
} catch let error as NSError {
print("error: \(error)")
}
let trackArray = videoAsset.tracks(withMediaType: .audio)
if trackArray.count > 0 {
let audioTrack =
mixComposition.addMutableTrack(withMediaType: AVMediaType.audio,
preferredTrackID: Int32(kCMPersistentTrackID_Invalid))
do {
try audioTrack?.insertTimeRange(CMTimeRangeMake(kCMTimeZero, videoAsset.duration), of: videoAsset.tracks(withMediaType: AVMediaType.audio).first!, at: audioTime)
audioTime = audioTime + videoAsset.duration
}
catch {
}
}
totalTime = totalTime + videoAsset.duration
let videoInstruction = AVMutableVideoCompositionLayerInstruction(assetTrack: videoTrack!)
if videoAsset != videoURLArray.last{
videoInstruction.setOpacity(0.0, at: videoAsset.duration)
}
layerInstructionsArray.append(videoInstruction)
}
let mainInstruction = AVMutableVideoCompositionInstruction()
mainInstruction.timeRange = CMTimeRangeMake(kCMTimeZero, totalTime)
mainInstruction.layerInstructions = layerInstructionsArray
let mainComposition = AVMutableVideoComposition()
mainComposition.instructions = [mainInstruction]
mainComposition.frameDuration = CMTimeMake(1, 30)
mainComposition.renderSize = CGSize(width: videoSize.width, height: videoSize.height)
let url = "merge_video".outputURL
let exporter = AVAssetExportSession(asset: mixComposition, presetName: AVAssetExportPresetHighestQuality)
exporter!.outputURL = url
exporter!.outputFileType = AVFileType.mov
exporter!.shouldOptimizeForNetworkUse = false
exporter!.videoComposition = mainComposition
exporter!.exportAsynchronously {
let video = AVAsset(url: url)
let playerItem = AVPlayerItem(asset: video)
let player = AVPlayer(playerItem: playerItem)
self.playerViewController.player = player
self.present(self.playerViewController, animated: true) {
self.playerViewController.player!.play()
}
}
}
请帮我解决这个问题。提前谢谢
注意我可以从阵列创建视频,但视频中只显示第一个和最后一个索引值。对于其余的值,只显示空白屏幕。我刚刚解决了我的问题,只需要更新代码中的一行。请看一下代码
if videoAsset != videoURLArray.last{
videoInstruction.setOpacity(0.0, at: totalTime)
}
注意:只需为数组的每个值更改下一个视频的at位置。我尝试了你的解决方案,但不起作用,我的第二个视频持续时间增加了,但视频内容没有增加。如果你能解决黑屏问题,我也会遇到同样的问题。如果你有解决方案,请和我分享好吗