how to save video programmatically on iPad1 iOS SDK - ipad

Question

i have array of images and i converted them to movie video and now i want to now how to save that converted video to ipad.
can i save that converted video to iPad photo library
NSError *error = nil;
AVAssetWriter *videoWriter = [[AVAssetWriter alloc] initWithURL:[NSURL fileURLWithPath:path] fileType:AVFileTypeQuickTimeMovie error:&error];
NSParameterAssert(videoWriter);
NSDictionary *videoSettings = [NSDictionary dictionaryWithObjectsAndKeys:
AVVideoCodecH264, AVVideoCodecKey,
[NSNumber numberWithInt:size.width], AVVideoWidthKey,
[NSNumber numberWithInt:size.height], AVVideoHeightKey,
nil];
AVAssetWriterInput* writerInput = [[AVAssetWriterInput assetWriterInputWithMediaType:AVMediaTypeVideo outputSettings:videoSettings] retain];
// NSDictionary *bufferAttributes = [NSDictionary dictionaryWithObjectsAndKeys: [NSNumber numberWithInt:kCVPixelFormatType_32ARGB], kCVPixelBufferPixelFormatTypeKey, nil];
AVAssetWriterInputPixelBufferAdaptor *adaptor = [AVAssetWriterInputPixelBufferAdaptor assetWriterInputPixelBufferAdaptorWithAssetWriterInput:writerInput sourcePixelBufferAttributes:nil];
NSParameterAssert(writerInput);
NSParameterAssert([videoWriter canAddInput:writerInput]);
[videoWriter addInput:writerInput];
//Start a session:
[videoWriter startWriting];
[videoWriter startSessionAtSourceTime:kCMTimeZero];
CVPixelBufferRef buffer = NULL;
//convert uiimage to CGImage.
CFDataRef imgData = (CFDataRef)[array objectAtIndex:0];
CGDataProviderRef imgDataProvider = CGDataProviderCreateWithCFData (imgData);
CGImageRef image1 = CGImageCreateWithPNGDataProvider(imgDataProvider, NULL, true, kCGRenderingIntentDefault);
buffer = [self pixelBufferFromCGImage:image1];
[adaptor appendPixelBuffer:buffer withPresentationTime:kCMTimeZero];
//Write samples:......
//Finish the session:
[writerInput markAsFinished];
[videoWriter finishWriting];

Answer 1

Try this open source component:-
https://www.cocoacontrols.com/controls/iqprojectvideo
This might help you. Use it according to your requirement.

Answer 2

Try with following code :
[_operationQueue addOperationWithBlock:^{
NSInteger i = 0;
NSString *path = [NSTemporaryDirectory() stringByAppendingFormat:#"%d.png",i];
UIImage *image;
NSDate *startDate;
while ((image = [UIImage imageWithContentsOfFile:path]))
{
while (1)
{
if (writerInput.readyForMoreMediaData == NO)
{
sleep(0.01);
continue;
}
else
{
//First time only
if (buffer == NULL)
{
CVPixelBufferPoolCreatePixelBuffer (NULL, adaptor.pixelBufferPool, &buffer);
startDate = [_dates objectAtIndex:i];
}
buffer = [IQProjectVideo pixelBufferFromCGImage:image.CGImage];
if (buffer)
{
if(i<_dates.count){
NSDate *currentDate = [_dates objectAtIndex:i];
Float64 interval = [currentDate timeIntervalSinceDate:startDate];
int32_t timeScale;
if (i == 0)
{
timeScale = 1.0/([[_dates objectAtIndex:i+1] timeIntervalSinceDate:currentDate]);
}
else
{
timeScale = 1.0/([currentDate timeIntervalSinceDate:[_dates objectAtIndex:i-1]]);
}
/**/
CMTime presentTime=CMTimeMakeWithSeconds(interval, MAX(33, timeScale));
// NSLog(#"presentTime:%#",(__bridge NSString *)CMTimeCopyDescription(kCFAllocatorDefault, presentTime));
if (_progressBlock != NULL)
{
dispatch_sync(dispatch_get_main_queue(), ^{
_progressBlock((CGFloat)i/(CGFloat)currentIndex);
});
}
// append buffer
[adaptor appendPixelBuffer:buffer withPresentationTime:presentTime];
CVPixelBufferRelease(buffer);
}
}
break;
}
}
[[NSFileManager defaultManager] removeItemAtPath:path error:nil];
path = [NSTemporaryDirectory() stringByAppendingFormat:#"%d.png",++i];
}
//Finish the session:
[writerInput markAsFinished];
if ([videoWriter respondsToSelector:#selector(finishWritingWithCompletionHandler:)])
{
[videoWriter finishWritingWithCompletionHandler:^{
CVPixelBufferPoolRelease(adaptor.pixelBufferPool);
}];
}
else
{
[videoWriter finishWriting];
CVPixelBufferPoolRelease(adaptor.pixelBufferPool);
}
NSDictionary *fileAttrubutes = [[NSFileManager defaultManager] attributesOfItemAtPath:_path error:nil];
NSDictionary *dictInfo = [NSDictionary dictionaryWithObjectsAndKeys:
_path,IQFilePathKey,
[fileAttrubutes objectForKey:NSFileSize], IQFileSizeKey,
[fileAttrubutes objectForKey:NSFileCreationDate], IQFileCreateDateKey,
nil];
if (_completionBlock != NULL)
{
dispatch_sync(dispatch_get_main_queue(), ^{
_completionBlock(dictInfo,videoWriter.error);
});
}
NSString *openCommand = [NSString stringWithFormat:#"/usr/bin/open \"%#\"", NSTemporaryDirectory()];
system([openCommand fileSystemRepresentation]);