如何在.NET中拆分动画gif?

使用 SelectActiveFrame 方法选择 Image 拿着动画gif的实例。例如:

image.SelectActiveFrame(FrameDimension.Time, frameIndex);

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

如果只想播放动画,可以将其放入PictureBox或使用 ImageAnimator 班级。

// 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;
}

半相关的,在wpf中,您有位图解码器,它将为您提供图像的所有帧。

见 BitmapDecoder.Create 和 BitmapDecoder.Frames .

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