avfoundation

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How do I run AVAssetReader at the same rate on a secondary thread as it does on the main thread?

I have an OpenGL iOS application and am using an AVAssetReader to read frames from a video and texture a simple model with the video content.[详细]

2023-04-03 15:48 分类：问答
How to capture a single frame from iPhone4 camera and use it in other view?

I am capturing a single frame using - (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection[详细]

2023-04-03 07:33 分类：问答
How do you reverse the playback of AVAudioPlayer?

Basically in my app I record a sound, and play it back, I would like to reverse the playback of this audio.[详细]

2023-04-03 02:24 分类：问答
fbcdn An error occurred while processing your request

Some videos uploaded to facebook using iOS Facebook SDK give me the error \"An error occurred while processing your request\"[详细]

2023-04-02 22:09 分类：问答
Can I Play an audio while recording a video on iPhone 4?

I\'m trying to record a video while the iPhone playback an audio track. as far as i tried, whenever I simulataniously record and play - the camera get stuck.[详细]

2023-04-02 19:04 分类：问答
Output from AVAssetWriter (UIImages written to video) distorted

I am using an AVAssetWriter to encode a series of images to a movie file, following Zoul\'s answer here: How do I export UIImage array as a movie?.[详细]

2023-04-02 18:40 分类：问答
How to develop the video recorder run in backgroundmode on iPhone

Is it possible to run the video recorder in backgroundmode on iPhone using the A开发者_如何学JAVAVFoundationFrameWork?[详细]

2023-04-02 11:49 分类：问答
streaming images over bonjour between two iOS device

My goal is to stream images captured by AVCpatureInput from one iOS device to another via bonjour. Here is my current method:[详细]

2023-04-02 11:26 分类：问答
AVFoundation get album image of song

I wan开发者_运维技巧t to get album image/cover of song. Is it possible? I\'m using AVPlayer for audio streaming, and i need to get album cover, if song contains it. Like in iTunes.[详细]

2023-04-02 04:50 分类：问答
Getting frame rate from AVCaptureVideoDataOutput

I\'m using AVCaptureVideoDataOutput to grab frames, process them, and then write them to a MOV file using AVAssetWriter.I understand that to set the minimum frame rate for the data input, I need only[详细]

2023-04-01 17:30 分类：问答