CODEWITHSUNDEEP
iosphotosframework
lonlywolf
lonlywolf

Reputation: 505

Unknown exception when exporting video asset

I have the following code to export video data from Photos:

if (asset.mediaType == PHAssetMediaTypeVideo)
{
    [[PHImageManager defaultManager] requestAVAssetForVideo:asset options:nil resultHandler:^(AVAsset *asset, AVAudioMix *audioMix, NSDictionary *info) {
        AVAssetExportSession *exportSession = [[AVAssetExportSession alloc] initWithAsset:asset presetName:AVAssetExportPresetPassthrough];
        exportSession.outputFileType = AVFileTypeQuickTimeMovie;
        [exportSession exportAsynchronouslyWithCompletionHandler:^{
            [[SharedManager sharedInstance] insertAttachment:exportSession.outputURL forEvent:event];
        }];
    }];
}

This code rises an unidentified exception (with breakpoints disabled) on the line with [exportSession export...] thing. ExportSession is valid, but shows outputFileType = (null) in the log, so I had to set it manually.

I can see the URL of the video, something like file://private.mobile....MOV, it was captured by camera and is stored in the assets catalog (I can watch it with Photos). It has 2 seconds length.

Please, help me out. How to export video file using Photos?

P.S.: Exporting of images using PHImageManager works perfectly fine.

Upvotes: 1

Views: 341

Answers (1)

lonlywolf
lonlywolf

Reputation: 505

Okay, I've found the issue. It is not said in the documentation, but it is required that outputURL set manually. So the following peace of code (from this answer https://stackoverflow.com/a/20244790/773451) is required:

NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *outputURL = paths[0];
NSFileManager *manager = [NSFileManager defaultManager];
[manager createDirectoryAtPath:outputURL withIntermediateDirectories:YES attributes:nil error:nil];
outputURL = [outputURL stringByAppendingPathComponent:@"output.mov"];
// Remove Existing File
[manager removeItemAtPath:outputURL error:nil];
exportSession.outputURL = [NSURL fileURLWithPath:outputURL];

Upvotes: 3

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