概要
C#で作成したbitmapから動画を作成します。
簡単なので、ソースのみです。
プログラム
using OpenCvSharp; using OpenCvSharp.Extensions; namespace SampleFormOpenCvSharp { public partial class Form1 : Form { public Form1() { InitializeComponent(); } private void button1_Click(object sender, EventArgs e) { // create video with opencv int width = 1280; int height = 720; double fps = 60; int radius = height / 2; // video writer initialize VideoWriter vw = new(@"C:\temp\aa.mp4", FourCC.H264, fps, new OpenCvSharp.Size(width, height)); bool check = vw.IsOpened(); if (!check) { MessageBox.Show("video writer is not opened."); return; } Bitmap bm = new(width, height); Graphics g = Graphics.FromImage(bm); // create movie while (true) { g.Clear(Color.White); g.FillEllipse(Brushes.LightBlue, 0, 0, radius * 2, radius * 2); // create frame Mat mat = bm.ToMat(); vw.Write(mat); mat.Dispose(); if (--radius < 0) { break; } }; vw.Release(); vw.Dispose(); bm.Dispose(); g.Dispose(); MessageBox.Show("video created."); } } }