.net - 如何在.net中分割动画gif？

Question

如何在 .net 中将动画 gif 拆分为其组成部分？

具体来说，我想将它们加载到内存中的 Image(s) (System.Drawing.Image) 中。

=======================

根据 SLaks 的回答，我现在有了这个

public static IEnumerable<Bitmap> GetImages(Stream stream)
{
    using (var gifImage = Image.FromStream(stream))
    {
        //gets the GUID
        var dimension = new FrameDimension(gifImage.FrameDimensionsList[0]);
        //total frames in the animation
        var frameCount = gifImage.GetFrameCount(dimension); 
        for (var index = 0; index < frameCount; index++)
        {
            //find the frame
            gifImage.SelectActiveFrame(dimension, index);
            //return a copy of it
            yield return (Bitmap) gifImage.Clone();
        }
    }
}

score 5 · Accepted Answer

使用方法来选择持有动画 GIFSelectActiveFrame的实例的活动帧。Image例如：

image.SelectActiveFrame(FrameDimension.Time, frameIndex);

要获取帧数，请调用GetFrameCount(FrameDimension.Time)

如果你只是想播放动画，你可以把它放到一个 PictureBox 或使用ImageAnimator类。

score 2 · Accepted Answer

// Parses individual Bitmap frames from a multi-frame Bitmap into an array of Bitmaps

private Bitmap[] ParseFrames(Bitmap Animation)
{
    // Get the number of animation frames to copy into a Bitmap array

    int Length = Animation.GetFrameCount(FrameDimension.Time);

    // Allocate a Bitmap array to hold individual frames from the animation

    Bitmap[] Frames = new Bitmap[Length];

    // Copy the animation Bitmap frames into the Bitmap array

    for (int Index = 0; Index < Length; Index++)
    {
        // Set the current frame within the animation to be copied into the Bitmap array element

        Animation.SelectActiveFrame(FrameDimension.Time, Index);

        // Create a new Bitmap element within the Bitmap array in which to copy the next frame

        Frames[Index] = new Bitmap(Animation.Size.Width, Animation.Size.Height);

        // Copy the current animation frame into the new Bitmap array element

        Graphics.FromImage(Frames[Index]).DrawImage(Animation, new Point(0, 0));
    }

    // Return the array of Bitmap frames

    return Frames;
}

score 0 · Accepted Answer

半相关，在 WPF 中，您有 BitmapDecoders，它将为您提供图像的所有帧。

请参阅BitmapDecoder.Create和BitmapDecoder.Frames。

score 0 · Accepted Answer

Image img = Image.FromFile(@"D:\images\zebra.gif");
//retrieving 1st frame
 img.SelectActiveFrame(new FrameDimension(img.FrameDimensionsList[0]), 1);
 pictureBox1.Image = new Bitmap(img);

.net - 如何在.net中分割动画gif？

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