avfoundation
AVVideoComposition Failure
As in mine. To use it. I am string several different video clips together into an AVMutableComposition and attempting to correct their orientation if n开发者_如何学编程eeded.[详细]
2023-03-29 03:01 分类：问答Use avfoundation to capture image, but can not capture too quickly
I use avfoundation to capture images, but I can not capture too quickly(I set interval time to 0.1s). It says \" NULL sample buffer\". What is the problem? Thank you.[详细]
2023-03-27 22:12 分类：问答Avfoundation - Play and record video (along with audio and preview) simultaneously
I am trying to record and play video simultaneously. Is this possible with avfoundation? Currently i am able to do it as long as i dont record audio. As soon as i add audio input to AVCaptureSession a[详细]
2023-03-27 04:14 分类：问答AVFoundation crop captured still image according to the preview aspect ratio
My question is mostly similar to this one: Cropping image captured by AVCaptureSession I have an applicati开发者_C百科on which uses AVFoundation for capturing still images. My AVCaptureVideoPreviewL[详细]
2023-03-27 04:09 分类：问答AVCaptureDevice: Flash or torch?
Looking at AVCaptureDevice, there are properties for both torch and flas开发者_JS百科h settings. They both seem to have the same methods. I know that \"torch\" is the British pyromaniacs\' word for fl[详细]
2023-03-26 23:09 分类：问答Why does capturing images with AVFoundation give me 480x640 images when the preset is 640x480?
I have some pretty basic code to capture a still image using AVFoundation. AVCaptureDeviceInput *newVideoInput = [[AVCaptureDeviceInput alloc] initWithDevice:[self backFacingCamera] error:nil];[详细]
2023-03-26 18:50 分类：问答Saving the video when app is interrupted by call
I setup and use AVAssetWriterInput --- AVAssetWriter chain to record a video. This works fine. When the video recording is stopped, AVAssetWriter\'s finishWriting returns a status saying it is Complet[详细]
2023-03-26 17:30 分类：问答iOS. AV Foundation. Why does AVPlayer work only over WiFi. No joy over cellular
In general I have been delighted with AVPlayer/AVPlayerItem/AVAsset. It works great for playing streaming music over WiFi. When I tested it over cellular - on the device as well as connected to Xcode[详细]
2023-03-26 11:14 分类：问答Continuous capture image with AVFoudation in iPhone
Now, I can capture an image using avfoundation , like below. But how should I do to capture images (e.g. 20 or 30 images开发者_JAVA技巧) continuously?[详细]
2023-03-26 06:00 分类：问答Adjusting the size the volume, using the same uislider but for multiple sounds
I have 10 sounds in a view. And one uislider This is the code for 1 of the sounds. - (IBAction)oneSound:(id)sender; {[详细]
2023-03-25 19:28 分类：问答
![Interactive visualization of a graph in python [closed]](https://www.devze.com/res/2023/04-10/09/92d32fe8c0d22fb96bd6f6e8b7d1f457.gif)
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