avcapturesession

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When recording video, how to set transformation (portrait, landscape, etc.) for video?

Should I use AVCaptureConnection\'s videoOri开发者_开发知识库entation property, or set the transform property of the videoWriterInput, or something else?Seems like AVCaptureConnection\'s videoOrientat[详细]

2023-03-06 15:06 分类：问答
How to combine 2 CMSampleBufferRef files?

I am trying to capture video using the AV foundation api\'s. I want to provide functionality to pause the video and restart it. I am trying figure out how to implement the p开发者_运维知识库ause featu[详细]

2023-02-27 04:21 分类：问答
How do i write video to iphone camera roll using AVFoundation?

I am currently recording video using AVFoundation api and have specified a fileUrl to write to: NSURL *fileUrl = [NSURL fileURLWithPath:[NSString stringWithFormat:@\"%@%@\", NSTemporaryDirectory(), @[详细]

2023-02-26 23:49 分类：问答
AVCaptureSession output sample buffer save to CoreData

I am using an AVCaptureSession to capture frames from the camera using the setSampleBufferDelegate method from the AVCaptureVideoDataOutput class. The delegate method looks like the following. You can[详细]

2023-02-25 20:35 分类：问答
AVCaptureVideoPreviewLayer mirroring iPhone 4 and iPad 2

I\'m looking for some good sample code to toggle mirroring in AVCaptureVideoPreviewLayer. The original AVCam project from WWDC \'10 had support but I\'m wondering if any of you have other implementati[详细]

2023-02-23 02:19 分类：问答
Using CATransform3D to create flip animation

I\'m trying to recreate UIViewAnimationTransitionFlipFromRight (and left). My reason for doing so, as shown below, is to make changes to AVCaptureVideoPreviewLayer in the middle of the animation, when[详细]

2023-02-23 00:55 分类：问答
Focus (Autofocus) not working in camera (AVFoundation AVCaptureSession)

I am using standard AVFoundation classes to capture video and show preview (http://developer.apple.com/library/ios/#qa/qa1702/_index.html)[详细]

2023-02-19 11:26 分类：问答
How can I get autofocus to work in a second AVCaptureSession without recreating the sessions?

Autofocus is not working on the first AVCaptureSession when I create a second AVCaptureSession. The second session to be created is the one where autofocus works and the first created one does not aut[详细]

2023-02-19 09:36 分类：问答
AVCaptureSession Abandoned memory - allocations - instruments

I use default AVCaptureSession to capture the camera view. Everything is working ok, i don\'t have any leaks, but when I use Allocations to find Abandoned memory after launching and closing AVCaptureD[详细]

2023-02-16 11:03 分类：问答
Capturing and manipulating microphone audio with AVCaptureSession?

While there are plenty of tutorials for how to use AVCaptureSessio开发者_如何学编程n to grab camera data, I can find no information (even on apple\'s dev network itself) on how to properly handle micr[详细]

2023-02-15 17:36 分类：问答