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Questions tagged [avcapturemoviefileoutput]

70 questions
17
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2 answers

iOS 8 iPad AVCaptureMovieFileOutput drops / loses / never gets audio track after 13 - 14 seconds of recording

I have the following code which works for iOS 6 & 7.x. In iOS 8.1 I have a strange issue where if you capture a session for about 13 seconds or longer, the resulting AVAsset only has 1 track (video), the audio track is just not there. If you record…
Si-N
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16
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1 answer

NSURL isFileURL always returns NO

Can someone explain to me why the following code: NSString* filePathString = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0]; NSLog(@"%i", [[NSURL URLWithString:filePathString] isFileURL]); NSLog(@"%@",…
eric.mitchell
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15
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1 answer

How to superimpose views over each captured frame inside CVImageBuffer, realtime not post process

I have managed to setup a basic AVCaptureSession which records a video and saves it on device by using AVCaptureFileOutputRecordingDelegate. I have been searching through docs to understand how we can add statistics overlays on top of the video…
TeaCupApp
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15
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2 answers

Problems with AVCaptureSession in landscape mode on iPad

I have been trying to capture frames from front camera and present it on the view. Here is my code _session = [[AVCaptureSession alloc] init]; _session.sessionPreset = AVCaptureSessionPreset640x480; AVCaptureDevice *device = [AVCaptureDevice…
MegaManX
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14
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5 answers

`[AVCaptureSession canAddOutput:output]` returns NO intermittently. Can I find out why?

I am using canAddOutput: to determine if I can add a AVCaptureMovieFileOutput to a AVCaptureSession and I'm finding that canAddOutput: is sometimes returning NO, and mostly returning YES. Is there a way to find out why a NO was returned? Or a way to…
Drew
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13
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1 answer

Using maxRecordedFileSize to limit AVCaptureSession record time

I've been writing a camera app for iOS 8 that uses AVFoundation to set up and handle recording and saving (not ImagePickerController). I'm trying to save use the maxRecordedFileSize attribute of the AVCaptureMovieFileOutput class to allow the user…
Dirk
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12
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2 answers

AVCaptureSession and AVCaptureMovieFileOutput frame timestamp

I am recording a movie with AVCaptureSession and AVCaptureMovieFileOutput. I am also recording acceleration data and trying to align the acceleration data with the video. I am trying to figure out a way to get the time the video file recording…
Roland Rabien
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11
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4 answers

Getting actual NSString of AvCaptureVideoDataOutput availableVideoCVPixelFormatTypes

I am trying to find the accepted formats on an AVFoundation output: self.theOutput=[[AVCaptureVideoDataOutput alloc]init]; if ([self.theSession canAddOutput:self.theOutput]) [self.theSession addOutput:self.theOutput]; I am then…
Khaled Barazi
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9
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1 answer

How to find the highest resolution AVCaptureDeviceFormat suitable for recording to a file?

I'm using AVFoundation to record from the device's camera to a movie file, using AVCaptureMovieFileOutput. I want to allow the user to switch between high frame rate and high resolution modes before recording begins, but I can't work out how you're…
Robert
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8
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1 answer

No audio is played after saving video with AVCaptureMovieFileOutput

I try to save a video file from the iphone camera with that following code: class Camera { ... private func loadDeviceInput() { let devices = AVCaptureDevice.devices() as! [AVCaptureDevice] for device in devices { if…
jrmgx
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5
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1 answer

Is audioSettings property missing in AVCaptureAudioDataOutput in the Swift header?

I'm working on iOS app where I want to record segmented video. I have read https://developer.apple.com/library/content/documentation/AudioVideo/Conceptual/AVFoundationPG/Articles/00_Introduction.html and I have a working solution with…
user331244
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Change camera position Front/Rear while recording a video

My camera was taking pictures and recording videos perfectly (using AVCaptureMovieFileOutput) and I was able to toggle camera position to front/rear normally. However, as in Instagram, Snapchat, and myriad of other apps, I wanted to also allow the…
rgoncalv
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5
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1 answer

Play video with AVPlayer after AVCaptureMovieFileOutput

I've created a custom camera similar to snapchat with AVFoundation. The picture aspect works: take a picture and I display the picture. Now I'm trying to take a video and display the video. I have captured a successful video file, tested and works…
Peter
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5
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Can't call startRecordingToOutputFileURL more than once on instance of AVCaptureMovieFileOutput

I am currently testing on iOS 8, on an iPhone 6. I am calling these APIs from Swift. I'm trying to figure out why I can't call startRecordingToOutputFileURL more than once on a single instance of AVCaptureMovieFileOutput. I am calling stopRecording…
ndbroadbent
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5
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Error while recording multiple screens using AVFoundation

I am trying to record primary and secondary monitor screens into two separate files using below code. const uint32_t MAX_DISPLAY = 2; CGDirectDisplayID displays[MAX_DISPLAY] = {0}; CGGetActiveDisplayList(MAX_DISPLAY, displays,…
georgekjolly
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