错误域=NSOSStatusErrorDomain 代码=-12780 \"(null)\"; [英] Error Domain=NSOSStatusErrorDomain Code=-12780 \"(null)\"
问题描述
当我尝试使用 AVAssetExport 导出资产时,我可能只在通过 whatsapp 接收的视频上收到以下错误.
When I try to export the asset with AVAssetExport I get the following error only on videos received through whatsapp probably.
我找不到可行的解决方案.我也尝试过实现代码来修复视频时长,但我没有修复它.
I could not find a working solution. I've also tried implementing code to fix video duration, but I did not fix it.
错误是:
错误域=NSOSStatusErrorDomain 代码=-12780 \"(null)\"
Error Domain=NSOSStatusErrorDomain Code=-12780 \"(null)\"
这里是代码
PHCachingImageManager().requestAVAsset(forVideo: asset.phAsset!, options: nil, resultHandler: { (AVAssetRecivied, audioMix, info) in
let AVAssetMy = AVAssetRecivied!.normalizingMediaDuration()
let exportSession : AVAssetExportSession?
if (AVAssetMy as? AVURLAsset) != nil {
exportSession = AVAssetExportSession(asset: (AVAssetMy as? AVURLAsset)!, presetName: AVAssetExportPresetMediumQuality)
}
else {
exportSession = AVAssetExportSession(asset: (AVAssetMy as? AVComposition)!, presetName: AVAssetExportPresetMediumQuality)
}
exportSession?.outputURL = URL(fileURLWithPath: NSTemporaryDirectory() + NSUUID().uuidString + ".m4v")
exportSession?.outputFileType = AVFileTypeQuickTimeMovie
exportSession?.audioMix = audioMix
exportSession?.shouldOptimizeForNetworkUse = true
exportSession?.exportAsynchronously { () -> Void in
if exportSession?.status == .completed {
self.getFileSize(url: exportSession!.outputURL!)
if self.myMediaArray == nil {
self.myMediaArray = [["Video" : AVAsset(url: exportSession!.outputURL!)]]
DispatchQueue.main.async {
self.collectionViewImage.reloadData()
}
} else {
self.myMediaArray?.append(["Video" : AVAsset(url: exportSession!.outputURL!)])
DispatchQueue.main.async {
self.collectionViewImage.reloadData()
}
}}
}
})
这里是调整视频时长的方法
Here is the method for adjusting the duration of the video
func normalizingMediaDuration() -> AVAsset? {
let mixComposition : AVMutableComposition = AVMutableComposition()
var mutableCompositionVideoTrack : [AVMutableCompositionTrack] = []
var mutableCompositionAudioTrack : [AVMutableCompositionTrack] = []
let totalVideoCompositionInstruction : AVMutableVideoCompositionInstruction = AVMutableVideoCompositionInstruction()
guard let video = tracks(withMediaType: AVMediaTypeVideo).first else {
return nil
}
guard let audio = tracks(withMediaType: AVMediaTypeAudio).first else {
return nil
}
mutableCompositionVideoTrack.append(mixComposition.addMutableTrack(withMediaType: AVMediaTypeVideo, preferredTrackID: kCMPersistentTrackID_Invalid))
mutableCompositionAudioTrack.append(mixComposition.addMutableTrack(withMediaType: AVMediaTypeAudio, preferredTrackID: kCMPersistentTrackID_Invalid))
let duration = video.timeRange.duration.seconds > audio.timeRange.duration.seconds ? audio.timeRange.duration : video.timeRange.duration
do{
try mutableCompositionVideoTrack[0].insertTimeRange(CMTimeRangeMake(kCMTimeZero,duration), of: video, at: kCMTimeZero)
try mutableCompositionAudioTrack[0].insertTimeRange(CMTimeRangeMake(kCMTimeZero, duration), of: audio, at: kCMTimeZero)
}catch{
return nil
}
totalVideoCompositionInstruction.timeRange = CMTimeRangeMake(kCMTimeZero,duration)
return mixComposition
}
}
文件是:
1) 可导出
2) 预设和格式兼容
3) 我试图在导出之前将文件移动到文档中 4) 我试图更改文件扩展名.
1) Exportable
2) Presets and format are compatible
3) I tried to move the file to the document's before I export 4) I tried to change the file extension.
推荐答案
我遇到了同样的问题,并得到了同样的错误代码 -12780.唯一为我修复它的是:向 exportSession?.outputURL 发送一个 NSURL 变量并作为 URL我不知道它为什么有效,我希望你也会发现它有帮助.
I ran into the same problem, and got the same error code -12780. The only thing that fixed it for me was: sending to exportSession?.outputURL a NSURL variable and putting as URL I have no idea why it worked and I hope you'll find it helpful as well.
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