avcapturesession

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MPMoviePlayerController Freezes AVCaptureVideoPreviewLayer

I\'m building an app that shows a video preview layer using AVCaptureVideoPreviewLayer. The setup of that is pretty straight-forward, and it seems to work well:[详细]

2023-04-11 01:30 分类：问答
Error recording to movie file with AVFoundation

This is a strange problem.I have not changed any code involving this in my project but my video recording has randomly sto开发者_StackOverflowpped working.When I try to save to a movie to a file I get[详细]

2023-04-07 19:24 分类：问答
Sample buffer in AVCaptureVideoDataOutput

I\'m thinking in an application that i want to take the sampleBuffer from a capture output and process it to become a stream broadcast on a web server I\'ve been doing Goggling since two months and I\[详细]

2023-04-03 16:32 分类：问答
iPhone SDK - get/calculate camera field of view (FOV)

I\'m working on a simple augmented开发者_运维技巧 reality application with camera overlay in detecting nearby stores. Anyways, I have three latitude/longitude points \'A\',\'B\' and \'C\' using core d[详细]

2023-03-30 23:24 分类：问答
iOS - Screen capture a video

UIGetScreenImage() is a private API of Apple and they won\'t let me use it.I was using it to take a snapshot image of a full screen video and then saving the snapshot to the photo album.They suggest I[详细]

2023-03-24 11:13 分类：问答
How to get raw image data (RGB value of each pixel) from iPhone camera when using in video capture mode?

I have to make an iPhone project that can process video data in realtime. This app has to be able to reconize the color of the[详细]

2023-03-23 09:24 分类：问答
use UIAlertView when camera is running in iPhone

I\'m trying to trigger an AlertView when开发者_Python百科 my camera detect a face using OpenCV. I manage to do the face detection and can output an NSLog successfully. But when I tried to trigger the[详细]

2023-03-15 07:23 分类：问答
AVCaptureMovieFileOutput causing wrong orientation when saving photo to Camera Roll

I have an odd problem with captureStillImageAsynchronouslyFromConnection. If I save the image using jpegStillImageNSDataRepresentation while the video is mirrored, the image in the camera roll is rota[详细]

2023-03-13 12:40 分类：问答
Why rotate Image in OpenCV without rotation code?

I am taking photo using AVCaptureStillImageOutput, AVCaptureSession, AVCaptureVideoPreviewLayer and display it in UIImageView. Its work properly.[详细]

2023-03-12 05:07 分类：问答
Adding audio input to AVCaptureSession stops AVPlayer

I am developing a music app where musical notation is displayed via a m4v video file played out using AVPLayer and an AVCaptureSession is used to preview and record both the video and audio of the per[详细]

2023-03-09 01:18 分类：问答