I am creating a video file from an array of images. I am able to create video file on simulator, however when I try to run the same code on device it gives following error:
NSURLErrorDomain Code=-3000 "Cannot create file" UserInfo=0x200be260 {NSUnderlyingError=0x200bb030 "The operation couldn’t be completed. (OSStatus error -12149.)", NSLocalizedDescription=Cannot create file}
I have searched a lot but couldn't find anything.
Here is the code for creating path.
NSString *path = [NSHomeDirectory() stringByAppendingPathComponent:[NSString stringWithFormat:@"Documents/movie.mp4"]];-(void)exportImages:(NSArray *)imageArray asVideoToPath:(NSString *)path withFrameSize:(CGSize)imageSize framesPerSecond:(NSUInteger)fps {NSLog(@"Start building video from defined frames.");NSError *error = nil;NSURL *url = [NSURL fileURLWithPath:path];AVAssetWriter *videoWriter = [[AVAssetWriter alloc] initWithURL: url fileType:AVFileTypeMPEG4 error:&error];NSParameterAssert(videoWriter);NSDictionary *videoSettings = [NSDictionary dictionaryWithObjectsAndKeys: AVVideoCodecH264, AVVideoCodecKey, [NSNumber numberWithInt:imageSize.width], AVVideoWidthKey, [NSNumber numberWithInt:imageSize.height], AVVideoHeightKey, nil];AVAssetWriterInput* videoWriterInput = [AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeVideo outputSettings:videoSettings];AVAssetWriterInputPixelBufferAdaptor *adaptor = [AVAssetWriterInputPixelBufferAdaptor assetWriterInputPixelBufferAdaptorWithAssetWriterInput:videoWriterInput sourcePixelBufferAttributes:nil];NSParameterAssert(videoWriterInput);NSParameterAssert([videoWriter canAddInput:videoWriterInput]);videoWriterInput.expectsMediaDataInRealTime = YES;[videoWriter addInput:videoWriterInput];//Start a session:[videoWriter startWriting];[videoWriter startSessionAtSourceTime:kCMTimeZero];CVPixelBufferRef buffer = NULL;//convert uiimage to CGImage.int frameCount = 0;for(UIImage * img in imageArray) { buffer = [self pixelBufferFromCGImage:[img CGImage] andSize:imageSize]; while (1) { if (adaptor.assetWriterInput.readyForMoreMediaData) { break; } } BOOL append_ok = NO; int j = 0; while (!append_ok && j < 30) { NSString *border = @"**************************************************"; NSLog(@"\n%@\nProcessing video frame (%d,%d).\n%@",border,frameCount,[imageArray count],border); CMTime frameTime = CMTimeMake(frameCount,(int32_t) fps); append_ok = [adaptor appendPixelBuffer:buffer withPresentationTime:frameTime]; if(!append_ok){ NSError *error = videoWriter.error; if(error!=nil) { NSLog(@"Unresolved error %@,%@.", error, [error userInfo]); } } j++; } if (!append_ok) { printf("error appending image %d times %d\n, with error.", frameCount, j); } frameCount++;}//Finish the session:[videoWriterInput markAsFinished];[videoWriter finishWritingWithCompletionHandler:^{ NSLog(@"Write Ended");}];}
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