ipad UIImagePickerController videoQuality

Question

I am trying to set the video quality for the UIImagePickerController but I see something really werid now. The effect on the video quality only happen after I reset my application. I try to change the video quality based on some user setting, by some code like this:

    if ([preferences boolForKey:kVideoQuality]) {
        NSLog(@"High Quality");
        self.pickerController.videoQuality = UIImagePickerControllerQualityTypeHigh;
    } else {
        NSLog(@"Low Quality");
        self.pickerController.videoQuality = UIImagePickerControllerQualityTypeMedium;
    }

    NSLog(@"%d", self.pickerController.videoQuality);

Everything looks good, when I change the setting to High Quality, the "High Quality" is output and vice versa. I also double check by the last NSLog and it aslo output the correct quality. But if I am in the high quality mode and I set to low quality, nothing happens. If I reset the app by quitting it and going back, the video record now is in low quality mode.

Anybody knows what can be possible causes?

At what point do you swap the video quality? Is this while picking something, or right before? — M0rph3v5, Sep 27 '11 at 13:58
right before the presentModalViewController, the same code works on my iPod Touch 4, iOS 5 beta 7 but not work on iPad 2, iOS4.3 — vodkhang, Sep 27 '11 at 14:49
Any chance you are setting the property on a secondary (not the main) thread? — Danra, Oct 08 '11 at 12:00

score 1 · Answer 1 · answered Oct 08 '11 at 15:20

1

You're setting the picker view's videoQuality property. Its delegate methods are sometimes not called when making a selection programatically.

Try calling the delegate methods directly after changing the selection and see if it works.

answered Oct 08 '11 at 15:20

Ash Furrow

12,341
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score 1 · Accepted Answer · answered Dec 02 '11 at 15:08

1

It turns out to be a bug of the iOS SDK, it is fixed in the iOS 5 now.

answered Dec 02 '11 at 15:08

vodkhang

18,281
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score 0 · Answer 3 · answered Oct 04 '11 at 10:58

0

What if you destroyed the imagePicker, and created a new one again after setting it?

Not a fix - but a workaround!

answered Oct 04 '11 at 10:58

ben_the_builder

309
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8

score 0 · Answer 4 · answered Feb 08 '12 at 15:47

the same problem here(Testing device: iPhone 4; OS: iOS 5.0.1):

Never see any difference between the video returned for

 UIImagePickerControllerQualityTypeMedium 
 UIImagePickerControllerQualityTypeHigh

even if I quit the App. Spent 1 hour, no findings, I am going to give up on this... Sad.

ipad UIImagePickerController videoQuality

4 Answers4