Images with sepia effect are broken when taking a photo about gpuimage HOT 2 CLOSED

That looks to be a bug with AVCaptureStillImageOutput and the AVCaptureSessionPreset1920x1080. The AVCaptureSessionPresetPhoto and all other presets I tried work fine with AVCaptureStillImageOutput.

All the other presets including AVCaptureSessionPreset1920x1080 work fine for an AVCaptureVideoDataOutput, so if you want a 1080p image, you could use a GPUImageVideoCamera instance instead.

I'll file a bug report with Apple on this. They might not have expected people to use the 1080p preset when taking photos on the 4S.

from gpuimage.

After testing, I've found that this happens with the AVCaptureSessionPreset1920x1080, AVCaptureSessionPresetHigh (which maps to 1080p on the 4S), and the AVCaptureSessionPreset1280x720 presets for AVCaptureStillImageOutput. It appears to be triggered by the iOS 5.0 fast texture caches, so if you absolutely have to use those presets with the still image input you can manually force GPUImageOpenGLESContext's +supportsFastTextureUpload to return NO.

That will slow image processing, but will remove this artifacting. I've filed this as a bug report with Apple, but it doesn't look like there's anything else I can do on my end to prevent this for the still images on the 4S and iPad 3.

from gpuimage.