所以我一直在尝试用它AVAssetExportSession来修剪方形视频。但由于某种原因，我不断收到此错误：
Error Domain=AVFoundationErrorDomain Code=-11800 "The operation could not be completed" UserInfo=0x1a03be70 {NSLocalizedDescription=The operation could not be completed, NSUnderlyingError=0x1a04c5e0 "The operation couldn’t be completed. (OSStatus error -12769.)", NSLocalizedFailureReason=An unknown error occurred (-12769)}
从 Apple 的网站上，我发现这-11800是一个未知错误，但是呢OSStatus error -12769？我在互联网上到处搜索，我没有看到任何与此错误代码相关的问题/问题。请帮忙。谢谢！
我的代码在这里：
AVAsset *asset = [[AVURLAsset alloc]initWithURL:self.originalVidUrl options:nil];
AVAssetTrack *clipVideoTrack = [[asset tracksWithMediaType:AVMediaTypeVideo] objectAtIndex:0];
if (clipVideoTrack.naturalSize.width==clipVideoTrack.naturalSize.height) {
NSLog(@"Square video");
NSArray *presets = [AVAssetExportSession exportPresetsCompatibleWithAsset:asset];
if ([presets containsObject:AVAssetExportPresetHighestQuality]) {
self.exportSession = [[AVAssetExportSession alloc]initWithAsset:asset presetName:AVAssetExportPresetHighestQuality];
self.exportSession.outputURL = [NSURL fileURLWithPath: self.tmpVidPath];
self.exportSession.outputFileType = AVFileTypeMPEG4;
CMTime start = ...
CMTime duration = ...
CMTimeRange range = CMTimeRangeMake(start, duration);
self.exportSession.timeRange = range;
[self.exportSession exportAsynchronouslyWithCompletionHandler:^{
switch ([self.exportSession status]) {
case AVAssetExportSessionStatusFailed:
NSLog(@"%@",self.exportSession.error);
break;
case AVAssetExportSessionStatusCancelled:
NSLog(@"Export canceled");
break;
default:
NSLog(@"Export Success, File Saved.");
break;
}
}];
}
}
PS此代码适用于使用本机相机应用程序拍摄的视频（即非方形/未处理的视频）。