avfoundation

Can anybody suggest how I can upload video file while recording. As I am recording video using AVFoundation this will save video to some file eg. record.mov . Now my query is how I can upload this video while recording, as I want to save user time as soon as user record his/her video should be uploaded. Right now I am trying with HTTP, File stream to upload video. I have found solution to capture videos frame while recording using AVFoundation Apple provided this sample code http://developer.apple.com/library/ios/#samplecode/RosyWriter/Introduction/Intro.html 来源： https://stackoverflow.com

I'm trying to mirror iOS device screen via USB connection to OSX. QuickTime does this fine, and I read this article with a code example: https://nadavrub.wordpress.com/2015/07/06/macos-media-capture-using-coremediaio/ However, the callback of CMIOStreamCopyBufferQueue is never called and I'm wondering what am I doing wrong? Have anyone faced this issue and can provide a working example ? Thanks. Marat Strelets Well.. eventually I did what Nadav told me in his blog - discover DAL devices and capture their output using AVCaptureSession like this: -(id) init { // Allow iOS Devices Discovery

In my app, I'm recording small videos and adding them into an NSMutableArray as AVAsset so that i keep record of what has been captured. when the user press a button to merge them, the final result is only the first video taken (example, if three short videos where taken, the final result after merging is only the first video and the others do not appear). my code on iterating in the NSMutableArray and stitching the videos together is here: if (self.capturedVideos.count != 0) { //Create AVMutableComposition Object.This object will hold our multiple AVMutableCompositionTrack.

I'm trying to create an iOS app which can record audio and video while simultaneously outputting audio to the speakers. To do the recording and preview, I'm using AVCaptureSession , an AVCaptureConnection each for both video and audio, and an AVAssetWriterInput each for both video and audio. I basically achieved this by following the RosyWriter example code. Prior to setting up recording in this fashion, I was using AVAudioPlayer to play audio. Now, if I am in the middle of capturing (not even recording, just capturing for preview), and attempt to use AVAudioPlayer , my captureOutput callbacks

I'm trying to get two videos to play sequentially. I've tried AVQueuePlayer but there's a huge "burp" between the two clips. I need to them to play without interruption. So I'm trying to use AVMutableComposition and an AVPlayer but can't get it right. Here's my code (ignore memory leaks, just testing in an empty project..): composition = [[AVMutableComposition alloc] init]; NSString * path = [[NSBundle mainBundle] pathForResource:@"test" ofType:@"mp4"]; NSURL * url = [NSURL fileURLWithPath:path]; AVURLAsset * asset = [[AVURLAsset alloc] initWithURL:url options:nil]; NSError * error = NULL;

I'm writing an application where the user can record up to 6 video clips each with a duration of 2 seconds. When the video clips are recorded the user can play with them using 6 buttons - one for each clip. The user can then record a movie by switching between the 6 clips. The problem is that I need near instantaneous switching between the 6 clips when the user presses a button - otherwise the illusion of playing with the clips is lost - the functionality is somewhat similar to the app called CamBox in the App Store. I first tried initializing every clip with and AVAsset in an AvPlayerItem in