AForge.NET-> AVIWriter 添加图像作为框架

发布于 2024-12-08 09:33:20 字数 1212 浏览 0 评论 0 原文

我想用图像制作视频，每个图像应该停留一秒钟。 AVIWriter 具有 25 帧速率，因此我必须添加一张图像 25 次才能使其停留一秒钟。

我尝试更改帧速率，但它不起作用。

谁能建议一个解决方法？

以下是将帧写入视频的代码：

    private void writeVideo()
    {
        // instantiate AVI writer, use WMV3 codec
        AVIWriter writer = new AVIWriter("wmv3");
        // create new AVI file and open it
        writer.Open(fileName, 320, 240);
        // create frame image
        Bitmap image = new Bitmap(320, 240);
        var cubit = new AForge.Imaging.Filters.ResizeBilinear(320, 240);
        string[] files = Directory.GetFiles(imagesFolder);
        writer.FrameRate = 25;
        int index = 0;
        int failed = 0;
        foreach (var item in files)
        {
            index++;
            try
            {
                image = Image.FromFile(item) as Bitmap;
                //image = cubit.Apply(image);

                for (int i = 0; i < 25; i++)
                {
                    writer.AddFrame(image); 
                }   
            }
            catch
            {
                failed++;
            }
            this.Text = index + " of " + files.Length + ". Failed: " + failed;
        }
        writer.Close();
    }

原文

I want to make a video from images, and each image should stay for one second.
The AVIWriter has 25 frames rate, so i have to add one image 25 times to make it stay for one second.

I tried changing the frame-rate, but it is not working.

Can anyone suggest a workaround?

The following is the code for writing frames into video:

    private void writeVideo()
    {
        // instantiate AVI writer, use WMV3 codec
        AVIWriter writer = new AVIWriter("wmv3");
        // create new AVI file and open it
        writer.Open(fileName, 320, 240);
        // create frame image
        Bitmap image = new Bitmap(320, 240);
        var cubit = new AForge.Imaging.Filters.ResizeBilinear(320, 240);
        string[] files = Directory.GetFiles(imagesFolder);
        writer.FrameRate = 25;
        int index = 0;
        int failed = 0;
        foreach (var item in files)
        {
            index++;
            try
            {
                image = Image.FromFile(item) as Bitmap;
                //image = cubit.Apply(image);

                for (int i = 0; i < 25; i++)
                {
                    writer.AddFrame(image); 
                }   
            }
            catch
            {
                failed++;
            }
            this.Text = index + " of " + files.Length + ". Failed: " + failed;
        }
        writer.Close();
    }

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千柳 2024-12-15 09:33:20

您好，我遇到了同样的问题，看到这个主题已阅读全部内容，但没有评论
http://www.aforgenet.com/framework/docs/html/bc8345f8-8e09-c1a4-4834-8330e5e85605.htm
有一条注释类似“应在打开新文件之前设置该属性才能生效”。

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空城旧梦 2024-12-15 09:33:20

如果您使用以下代码，哈坎的解决方案是有效的：

AVIWriter videoWriter;
videoWriter = new AVIWriter("wmv3");
videoWriter.FrameRate = 1;
videoWriter.Open("test.avi", 320, 240);
videoWriter.AddFrame(bitmap1);
videoWriter.AddFrame(bitmap2);
videoWriter.AddFrame(bitmap3);
videoWriter.Close();

每秒显示一个位图。
（只是为了给出一段直接工作的代码）。

The solution of Hakan is working, if you use this code:

AVIWriter videoWriter;
videoWriter = new AVIWriter("wmv3");
videoWriter.FrameRate = 1;
videoWriter.Open("test.avi", 320, 240);
videoWriter.AddFrame(bitmap1);
videoWriter.AddFrame(bitmap2);
videoWriter.AddFrame(bitmap3);
videoWriter.Close();

There is well one bitmap displayed per second.
(just for giving a directly working piece of code).

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