avfoundation

I have a bunch of video files that I want to merge into one video file, I am using NSMutableData to achieve the task NSMutableData *concatenatedData = [[NSMutableData alloc] init]; for (int i=0; i <[videoArray count]; i ++) { [concatenatedData appendData: [videoArray objectAtIndex:i]]; } [concatenatedData writeToFile:[[NSString alloc] initWithFormat:@"%@%@", NSTemporaryDirectory(), @"outputConct.mov"] atomically:YES]; UISaveVideoAtPathToSavedPhotosAlbum([[NSString alloc] initWithFormat:@"%@%@", NSTemporaryDirectory(),@"outputConct.mov"], nil, nil, nil); after the video is saved in my camera

I need to obtain the UIImage from uncompressed image data from CMSampleBufferRef. I'm using the code: captureStillImageOutput captureStillImageAsynchronouslyFromConnection:connection completionHandler:^(CMSampleBufferRef imageSampleBuffer, NSError *error) { // that famous function from Apple docs found on a lot of websites // does NOT work for still images UIImage *capturedImage = [self imageFromSampleBuffer:imageSampleBuffer]; } http://developer.apple.com/library/ios/#qa/qa1702/_index.html is a link to imageFromSampleBuffer function. But it does not work properly. :( There is a

My Requirement: I need to get list of all audio tracks from a video then switch to selected audio track. Approach and Problem: I am using two ways because some time first way do not provide result in that case I am using second one and sometimes both do not get result while VLC media player shows video have audio tracks. I looked apple documentation https://developer.apple.com/library/mac/releasenotes/AudioVideo/RN-AVFoundation/index.html#//apple_ref/doc/uid/TP40010717-CH1-DontLinkElementID_1 that suggested first way. My Code for getting Audio tracks -: - (NSArray *)getAvailableAudioTracks {

I'm trying to do a very simple application, the purpose is listening an audio stream ( AAC 64 kbps ). To do so I'm using AVPlayer from the Apple AVFoundation has follow : ViewController.m #import "ViewController.h" @interface ViewController () @end @implementation ViewController @synthesize playerItem, player; - (void)viewDidLoad { [super viewDidLoad]; } - (void) viewWillAppear:(BOOL)animated{ [super viewWillAppear:animated]; playerItem = [AVPlayerItem playerItemWithURL:[NSURL URLWithString:@"http://stream.myjungly.fr/MYJUNGLY2"]]; [playerItem addObserver:self forKeyPath:@"timedMetadata"

I want to read the buffer from my microphone into an array, with 441khz its working fine but with the sample rate 8khz it comes to an error ERROR: >avae> AVAudioIONodeImpl.mm:884: SetOutputFormat: required condition is false: format.sampleRate == hwFormat.sampleRate 2016-11-26 19:32:40.674 Atem[5800:1168274] *** Terminating app due to uncaught exception 'com.apple.coreaudio.avfaudio', reason: 'required condition is false: format.sampleRate == hwFormat.sampleRate' with my following code : var engine = AVAudioEngine() func setup() { print("new") let input = engine.inputNode! let bus = 0 let

This question already has an answer here: AVFoundation, how to turn off the shutter sound when captureStillImageAsynchronouslyFromConnection? 9 answers Right now I've been trying to mute my shutter sound when capturing an image in iOS SDK but unable to do it. Is there any way of kind of code available for it (Actually, I wanted to trace a fake person from my chat app) I've seen: Muting AVCapture shutter sound on iPhone How to mute the capture sound in AVFoundation? AVFoundation, how to turn off the shutter sound when captureStillImageAsynchronouslyFromConnection? But I have not succeeded yet.

I am new to swift and trying to build a camera app which can apply real-time filters, and save with the applied filters. So far i can preview real-time with the applied filters, but when i save the video its all black. import UIKit import AVFoundation import AssetsLibrary import CoreMedia import Photos class ViewController: UIViewController , AVCaptureVideoDataOutputSampleBufferDelegate { var captureSession: AVCaptureSession! @IBOutlet weak var previewView: UIView! @IBOutlet weak var recordButtton: UIButton! @IBOutlet weak var imageView: UIImageView! var assetWriter: AVAssetWriter? var