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How to resize an animated gif image using C#?

Took me a while to find this, but finally found a solution: Install Magick.NET via NuGet, license can be found here: https://magick.codeplex.com/license Example code: var newWidth = 100; using (var collection = new MagickImageCollection(new FileInfo(@”C:\test.gif”))) { collection.Coalesce(); foreach (var image in collection) { image.Resize(newWidth, 0); } collection.Write(@”c:\resized.gif”); } From my tests, this works with alpha … Read more

How to display GIF in react-native android app?

We made the core library smaller by making things like GIF support optional. Because of that we have to manually opt-in for gif support in Android. Add both of the following lines to your android/app/build.gradle file under dependencies: compile “com.facebook.fresco:animated-gif:1.3.0” compile “com.facebook.fresco:animated-base-support:1.3.0” So your dependencies section might look like this: dependencies { compile fileTree(dir: “libs”, … Read more

matplotlib save animation in gif error

This is because matplotlib does not support GIFs without external programs. If you have imagemagick correctly installed and configured, this should work: import matplotlib matplotlib.use(‘Agg’) import matplotlib.pyplot as plt import matplotlib.animation import numpy as np def init_animation(): global line line, = ax.plot(x, np.zeros_like(x)) ax.set_xlim(0, 2*np.pi) ax.set_ylim(-1,1) def animate(i): line.set_ydata(np.sin(2*np.pi*i / 50)*np.sin(x)) return line, fig = … Read more

Converting transparent gif / png to jpeg using java

For Java 6 (and 5 too, I think): BufferedImage bufferedImage = new BufferedImage(image.getWidth(null), image.getHeight(null), BufferedImage.TYPE_INT_RGB); g = bufferedImage.createGraphics(); //Color.WHITE estes the background to white. You can use any other color g.drawImage(image, 0, 0, bufferedImage.getWidth(), bufferedImage.getHeight(), Color.WHITE, null);

How to save canvas animation as gif or webm?

In modern browsers you can use a conjunction of the MediaRecorder API and the HTMLCanvasElement.captureStream method. The MediaRecorder API will be able to encode a MediaStream in a video or audio media file on the fly, resulting in far less memory needed than when you grab still images. const ctx = canvas.getContext(‘2d’); var x = … Read more

Display GIF in a WP7 application with Silverlight

In fact, it’s working, but it lacks some documentation. After some troubles, here’s how to use it : reference ImageTools reference ImageTools.Controls reference ImageTools.IO.Gif Add namespace in xaml : xmlns:imagetools=”clr-namespace:ImageTools.Controls;assembly=ImageTools.Controls” And resources : <phone:PhoneApplicationPage.Resources> <imagetools:ImageConverter x:Key=”ImageConverter” /> </phone:PhoneApplicationPage.Resources> Then use the control with the converter : <imagetools:AnimatedImage Source=”{Binding ImageSource, Converter={StaticResource ImageConverter}}” /> Your ImageSource should … Read more

How to create an animated GIF from JPEGs in Android (development)

See this solution. https://github.com/nbadal/android-gif-encoder It’s an Android version of this post. http://www.jappit.com/blog/2008/12/04/j2me-animated-gif-encoder/ To use this class, here is an example helper method to generate GIF byte array. Note here the getBitmapArray() function is a method to return all the Bitmap files in an image adapter at once. So the input is all the Bitmap files … Read more

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