asset writer is in an unknown state, wasn't recording about pbjvision HOT 14 CLOSED

Hey @ranuamar,

Good find, I'll have to investigate this to see what's happening.

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is there any progress on this issue?

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I recommend not changing the audio session category while recording but once it has completed and you've received the callback.

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I am having the same issue but in different scenario. If I setup PBJCameraModePhoto at start and toggle cam mode, I get the same error. "AVASSETWRITERSTATUSUNKNOWN". Can you please help on it?

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hey patrick, im not at all messing with the audio session category, still getting this error after calling endvideocapture. could you point me in the right direction?

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i think ive found a clue to the problem. for some reason the audio stream is not setup. the app has microphone access in my privacy settings and everything.

in: - (void)captureOutput:(AVCaptureOutput *)captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection *)connection

BOOL isAudio = (self.cameraMode != PBJCameraModePhoto) && (connection == [_captureOutputAudio connectionWithMediaType:AVMediaTypeAudio]);

is NO. ive confirmed its not in VideoMode so im guessing the (connection == [_captureOutputAudio connectionWithMediaType:AVMediaTypeAudio]) is returning nil. any clue as to why this may be? much thanks.

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i think ive found the problem. if you pre-setup the camera (lets say in the background for quick access) in photo mode initially. the audiosession is not setup. now when you switch to video mode, the audiosession is still not setup.

is there a way to switch between photo and video mode without destroying the camera?

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@ranuamar ah, that's an excellent point. i integrated a PR recently to ensure we're not using audio if PBJVision is strictly used for photos (since mic isn't required). i can put some code in to check if the audio session is disabled and active if when going into video.

i can investigate not destroying the camera when switching modes, but in a lot of situations iOS cameras typically display some type of transition ie iris/blurring effects when making this change.

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hey patrick! thanks for the quick response. im keeping your camera persistent in the background so its quick access. i call setmode:photo just before bringing it up (i could delay the view push to get rid of the jerky transition).

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could you help me add that bit of code?

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I had the same issue, it seems that in _setupCamera _captureDeviceAudio, _captureDeviceInputAudio and _captureOutputAudio are not being initialized if we are in photo mode.
Adding the following to _setupSession fixes it for me:

if (shouldSwitchMode) {
    if (self.cameraMode == PBJCameraModePhoto) {
        [_captureSession removeInput:_captureDeviceInputAudio];
        [_captureSession removeOutput:_captureOutputAudio];
    }
    //start fix
    else if(!_captureDeviceAudio && !_captureDeviceInputAudio && !_captureOutputAudio){
        NSError *error = nil;
        _captureDeviceAudio = [AVCaptureDevice defaultDeviceWithMediaType:AVMediaTypeAudio];
        _captureDeviceInputAudio = [AVCaptureDeviceInput deviceInputWithDevice:_captureDeviceAudio error:&error];
        if (error) {
            DLog(@"error setting up audio input (%@)", error);
        }

        _captureOutputAudio = [[AVCaptureAudioDataOutput alloc] init];
        [_captureOutputAudio setSampleBufferDelegate:self queue:_captureVideoDispatchQueue];
    }
    //end fix

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@CristianoCastro thanks for the help

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You are welcome :)
And thank you for this great library ;)

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On 27/11/2013, at 19:51, Patrick Piemonte [email protected] wrote:

@CristianoCastro thanks for the help

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thanks cristiano!

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