Get video size after Save this video to Photo Library in iOS

Question

I created Camera using UIImagePickerController, after take a video. I clicked on Use Video, I saved this video to Photo library. And now I want to get size of this video. I used AlAssetLibrary to save video to Photo library. How can get size of the video has just taken? Please help me. Thanks in advance.

    -(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{

    ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
    NSURL *recordedVideoURL= [info objectForKey:UIImagePickerControllerMediaURL];
    if ([library videoAtPathIsCompatibleWithSavedPhotosAlbum:recordedVideoURL]) {
        [library writeVideoAtPathToSavedPhotosAlbum:recordedVideoURL
                                    completionBlock:^(NSURL *assetURL, NSError *error){}
         ];
    }

}

I tried below code to get size of video but not works:

 ALAssetRepresentation *rep = [alasset defaultRepresentation];
Byte *buffer = (Byte*)malloc(rep.size);
NSError *error = nil;
NSUInteger buffered = [rep getBytes:buffer fromOffset:0.0 length:rep.size error:&error];
NSData *data = [NSData dataWithBytesNoCopy:buffer length:buffered freeWhenDone:YES];

I don't know but when my app is crashed when get size of video by using above code. — user3168540, Jan 14 '14 at 05:38
Maybe the video is very big and your app is being killed by memory pressure. — Rhythmic Fistman, Jan 14 '14 at 10:33
@RhythmicFistman: Yes,i have done. But i'm stuck in remove overlay image when deselect. Can you show me how to remove overlay when deselect in UICollectionView ? Thks — user3168540, Jan 14 '14 at 10:58

score 1 · Answer 1 · edited May 23 '17 at 12:03

1

1) Please see this question to get your video.

2) After getting your video convert it into NSData as refer this question.

3)Now use NSData's length function .

It will give to to get the length of your video file.

edited May 23 '17 at 12:03

Community

1
1

answered Jan 14 '14 at 05:11

Ankush

2,405
3
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45

Yes, i have read above link, but my app crash when trying to get size of video. Can you help me? thanks – user3168540 Jan 14 '14 at 05:41

score 0 · Answer 2 · answered Jan 14 '14 at 05:23

0

you can also use this for getting size of video :

AVPlayerItem *playerItem = [AVPlayerItem playerItemWithURL:YOURURL];

CMTime duration = playerItem.duration;
float seconds = CMTimeGetSeconds(duration);

answered Jan 14 '14 at 05:23

Shubham

570
3
12

score 0 · Accepted Answer · answered Jan 15 '14 at 18:35

You can do it in three ways

1.Use NSData length

    ALAssetRepresentation *rep = [alasset defaultRepresentation];
    Byte *buffer = (Byte*)malloc(rep.size);
    NSError *error = nil;
    NSUInteger buffered = [rep getBytes:buffer fromOffset:0.0 length:rep.size error:&error];
    NSData *data = [NSData dataWithBytesNoCopy:buffer length:buffered freeWhenDone:YES];
    NSLog(@"Size of video %d",data.length);

2.Make use of ALAssetRepresentationsize

3.Worst-Case Scenario: Use the videoPathURL that points to the saved video file, retrieve it again using ALAsset and caliculate the size.

Get video size after Save this video to Photo Library in iOS

3 Answers3