AVCapturePhotoCaptureDelegate Error When Capturing Image

Question

I seem to get this error message randomly after a few cycles of capture:

Error finishing photo: Error Domain=AVFoundationErrorDomain Code=-11800 "The operation could not be completed" UserInfo={NSLocalizedFailureReason=An unknown error occurred (-16802), NSLocalizedDescription=The operation could not be completed, NSUnderlyingError=0x281f20f30 {Error Domain=NSOSStatusErrorDomain Code=-16802 "(null)"}}

Error occurs in:

func photoOutput(_ output: AVCapturePhotoOutput, didFinishProcessingPhoto photo: AVCapturePhoto, error: Error?) {}

Notes:

This Error never comes up on the first capture.
The image format is also a processed format: HEIF
iOS 13

Might this be related? https://forums.developer.apple.com/thread/101588 — Frank Rupprecht, Mar 20 '20 at 06:19
-12686 indicates that there was a buffer allocation failure near the beginning of the camera pipeline. -16802 is similarly an indication of still image failure at the driver layer. — Gizmodo, Mar 20 '20 at 14:39

score 2 · Answer 1 · answered Mar 24 '20 at 17:12

2

Had the same issue, the culprit was stabilization. I was setting settings.isAutoStillImageStabilizationEnabled = true while capturing the image. Stabilization is a heavy process which on main thread which hinders the buffer allocation. Moved it to where camera was getting initialized, resolved the issue for me.

answered Mar 24 '20 at 17:12

Shashwat KN

23
4

Interesting! So what exactly are you doing at the time of camera initialization? – Gizmodo Mar 24 '20 at 19:43
1

setting up input, outputs and camera session, configuring settings and adding observers – Shashwat KN Mar 25 '20 at 05:05
I meant, how do you initiate AVCapturePhotoSettings just at the time of camera initialization, since it has to be done per capture? – Gizmodo Mar 25 '20 at 14:36

AVCapturePhotoCaptureDelegate Error When Capturing Image

1 Answers1