metasmile/nsgif2

Convert live photos and videos into animated GIFs in iOS, or extract frames from them.

nsgif2's Issues

How to achieve the same time duration as the video file ?

I'm encountered with playing video files in UICollectionViewCells, as the AVPlayer of AVPlayerLayer in a cell is slow and choppy, I've turned to use GIF and SDImageCache in UIImageView.
I'd like to know if the GIF could be the same time length of playing like the video, e.g. I'm going to get five seconds of video playing while the GIF is five seconds too?
How to adjust the framesPerSecond, delayTime or frameCount to get this. Thanks.

Error on DemoProject

Hi,
When i try to build the demoProject with Xcode 8.2.1 i get the attachd error,

add a option to play reversely

support creating from a photo url

• from burst, or an array which contains selected photos by user.

HUGE memory spike causes crash even for 1 frame per second on a 60 second long mp4 video

I have a 3.9 MB 60 second long mp4 video which I am trying to convert to GIF. Testing on iOS 9.3.
Even when I have set the request.framesPerSecond to 1 which should only have 60 total frames in the entire GIF, my app memory spikes to around 270 MB.

Looking further, the memory spike occurs at the if (!CGImageDestinationFinalize(destination)) {
line of the createGIFforTimePoints method. Any clue what can be done to fix this?

NSURL *videoURL = [NSURL fileURLWithPath:[[NSBundle mainBundle] pathForResource:@"clip" ofType:@"mp4"]];
    NSString *destinationPath = [[self applicationDocumentsDirectory].path
                                 stringByAppendingPathComponent:@"mygif.txt"];

    NSGIFRequest * request = [NSGIFRequest requestWithSourceVideo:videoURL destination:[NSURL fileURLWithPath:destinationPath]];
    request.framesPerSecond=1;
    request.scalePreset=NSGIFScaleOptimize;
    request.progressHandler = ^(double progress, NSUInteger position, NSUInteger length, CMTime time, BOOL *stop, NSDictionary *frameProperties) {
        NSLog(@"%f - %lu - %lu - %lld - %@", progress, (unsigned long)position, (unsigned long)length, time.value, frameProperties);
    };

    [NSGIF create:request completion:^(NSURL *GifURL) {
        //GifURL is to nil if it failed or stopped.
    }];

Swift transpling

support start point for seeking

simultaneous processing support with provided specific chunk size

request 1~5 + chunk size 3
job1 start
job2 start
job3 start
...
job2 finished
job1 finished
job3 finished

start next chunk
job3 start
job4 start
....
job4 finished
job3 finished

all done.

merge params of all interfaces to 'NSGIFOption'

Support a block to receive progress ratio from each processing.

New roadmap : NSGIF2 -> UIGIF

• Performance improvements + Memory leak fixes and optimization.
• Swift3 Support
• Support ending for macos.
• iOS/tvOS/watchOS support only.

Not releasing Source ImageRef

Please add this line " CGImageRelease(sourceRef)" to release memory.

• (UIImage*)imageByScalingToFill:(UIImage *)image size:(CGSize)fillSize rescaleTo:(CGFloat)scaleToRescale{
  CGImageRef sourceRef = image.CGImage;
  .
  .
  .

  CGImageRelease(destRef);
  CGImageRelease(sourceRef);
  return destImage;

}