avfoundation

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Download a song and play it with AVFoundation

I\'ve been trying to get this to work all day. I\'ve tried everything I could think of to get this to work. I have a song which is an m4a located on a server. I download it and save it to the document[详细]

2023-03-25 09:37 分类：问答
iOS Extracting Audio from .mov file

I\'ve been trying to extract audio from a .mov file for a while now and I just can\'t seem to get it working. Specifically, I need to extract the a开发者_如何学JAVAudio and save it as an .aif or .aiff[详细]

2023-03-24 22:42 分类：问答
Video Recording using AVFoundation

I am trying to record video using AVFoundation. When I add video input only to the session, everything works fine but when I add an audio input to it, it stops recording the video.(Delegate method is[详细]

2023-03-24 01:34 分类：问答
Pause/resume video recording with AVFoundation

I am using AVFoundation f开发者_开发百科ramework for video recording. I need to implement the functionality to pause the recording and user can also resume it. I searched alot but couldn\'t find any m[详细]

2023-03-23 18:05 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
Read multiple tracks with AVAssetReader

I need to read raw samples of both audio and video from an AVAsset. What is the开发者_运维知识库 best way to do this? I can attache multiple AVAssetReaderTrackOutput objects to one AVAssetReader. But[详细]

2023-03-23 02:37 分类：问答
Rotating AV video preview area and other elements when using AV Foundation

I had started a project using UIImagePickerController to capture still images. I had abandoned using this simple mechanism because of the poor interaction between overlays and just-captured images.The[详细]

2023-03-22 16:36 分类：问答
iPhone: Play audio and video simultaneously

I am building a game application where I need to play animation videos and their corresponding sounds(may be different depending on situation). I have all videos and sounds file are ready but I am not[详细]

2023-03-21 00:39 分类：问答
AVURLAsset's loadValuesAsynchronouslyForKeys method doesn't call completion block when executed in modal view controller

I\'m using AV Foundation to replay in-bundle .mov files. I followed Apple\'s guide to initiate an AVURLAsset instance and called its - (void)loadValuesAsynchronouslyForKeys:(NSArray *)keys completionH[详细]

2023-03-20 16:27 分类：问答
How to set a transparent background for an AVVideoComposition?

Update - I\'ve added a 50 reputation bounty for answering this question! I have an application that needs to put together some videos and photos to create a movie out of them. I am using AVMutableCom[详细]

2023-03-20 12:17 分类：问答