Question

出于某种原因，我总是收到此错误：

错误域= NSURLErrorDomain代码= -3000“无法创建文件” UserInfo = {NSLocalizedDescription =无法创建文件， NSUnderlyingError = 0x1321dd730 {错误域= NSOSStatusErrorDomain 代码= -12115“（null）”}}

尝试将AVSession导出到m4a时。这在我的同事设备上运行良好，但每次在我的iPad Air 2（iOS 9.1）以及我们的QA iPad Mini 3上都会失败。

- (void)processSourceVideoFile:(NSURL *)mediaURL completion:(void (^)(BOOL success))completion {
    [self showProgressOverlay];

    NSString *outputFileType = AVFileTypeMPEG4;

    __block NSString *videoID = nil;
    if (self.videoAttachment == nil) {
        [MagicalRecord saveUsingEditContextWithBlockAndWait:^(NSManagedObjectContext *localContext) {
            self.videoAttachment = [SPXAttachment MR_createEntityInContext:localContext];
            self.videoAttachment.uuid = [NSString uuid];
            self.videoAttachment.clientCreatedAt = [NSDate date];
            videoID = self.videoAttachment.uuid;
        }];
    } else {
        videoID = self.videoAttachment.uuid;
    }

    self.videoAttachment = [SPXAttachment MR_findFirstByAttribute:@"uuid" withValue:videoID];

    NSString *targetPath = self.videoAttachment.filePath;
    DDLogVerbose(@"Exporting Video to %@", targetPath);
    if ([[NSFileManager defaultManager] fileExistsAtPath:targetPath]) {
        [[NSFileManager defaultManager] removeItemAtPath:targetPath error:nil];
    }

    AVAsset *video = [AVAsset assetWithURL:mediaURL];

    self.exportSession = [AVAssetExportSession exportSessionWithAsset:video presetName:AVAssetExportPreset640x480];
    self.exportSession.outputFileType = outputFileType;
    self.exportSession.outputURL = [NSURL fileURLWithPath:targetPath];

    [self.exportSession exportAsynchronouslyWithCompletionHandler:^{

        dispatch_async(dispatch_get_main_queue(), ^{
            [self hideProgressOverlay];
        });

        switch (self.exportSession.status) {
            case AVAssetExportSessionStatusFailed:
                DDLogError(@"Video Export Failed: %@", self.exportSession.error);
                completion(NO);
                break;
            case AVAssetExportSessionStatusCancelled:
                DDLogVerbose(@"Video Export Cancelled");
                break;
            case AVAssetExportSessionStatusCompleted: {
                DDLogVerbose(@"Video Export Complete for %@", targetPath);
                BOOL dir;
                if ([[NSFileManager defaultManager] fileExistsAtPath:targetPath isDirectory:&dir]) {
                    DDLogVerbose(@"FILE IS THERE MOFO!!");
                }
                completion(YES);
            }
                break;
            default:
                break;
        }
    }];
}

来源网址：file：///private/var/mobile/Containers/Data/Application/BD85BA54-5B3D-4533-A142-C2A30F373814/tmp/capture-T0x12fe1e8e0.tmp.CbksL4/capturedvideo.MOV

输出网址：file：/// var / mobile / Containers / Data / Application / BD85BA54-5B3D-4533-A142-C2A30F373814 / Library / Files / 59124681-ba1a-4453-8078-9ca6ac3088bf / attachments / 454dd782-6b14 -44cd-9f4e-84664908388b

我尝试将文件扩展名（.mp4）添加到输出网址，但没有帮助。我搜索过的东西与这个场景完全匹配。

任何帮助表示赞赏！

Answer 1

确保输出网址的路径末尾有.mp4文件扩展名。

Answer 2

文件名中的日期可能带有正斜杠。在AVAssetExportSession中，目录名而不是文件名可以使用正斜杠。

AVAssetExportSession无法创建文件错误-12115

2 个答案: