如何调整存储在位图中的gif的大小 [英] How to resize gif which is stored in bitmap

问题描述

我试图调整Gif图像的大小但是在调整大小后它不会动画。我试着跟随代码调整大小。



我尝试过：

i tried to resize Gif image but after resizing it will not animating. i tried following code resize.

What I have tried:

LastBitImg = new Bitmap(Convert.ToInt32(FNewWidth), Convert.ToInt32(height));
                        LastBitImg = FBitImg;

推荐答案

动画GIF不是单个图像，而是一系列图像（也称为帧）附加数据，如帧延迟。您必须将动画GIF分割为帧图像作为位图，调整大小，并使用原始帧数据创建新的动画GIF。



这里有一篇文章在CP上使用.Net创建动画GIF： NGif，用于.NET的动画GIF编码器 [ ^ ]。



或者使用支持调整动画GIF大小的图像库，如ImageMagick（GitHub：dlemstra / Magick.NET [ ^ ]。

An animated GIF is not a single image but a sequence of images (also called frames) with additional data like the frame delay. You have to split the animated GIF into it's frame images as bitmaps, resize them, and create a new animated GIF using the original frame data.

There is an article here at CP on creating animated GIFs with .Net: NGif, Animated GIF Encoder for .NET[^].

Alternatively use an image library that supports resizing animated GIFs like ImageMagick (there is a .Net wrapper at GitHub: dlemstra/Magick.NET[^] ).

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