C# と VB.NET の質問掲示板

c# Windowsフォームアプリケーション .NetFramework

Webカメラのメモリー不足ではお世話になりました
その後webカメラ側で解像度が変えられないことが分かり
色々試したのですがうまくいかないので
解像度の変更の部分を教えて下さい
button1_Click以降です

using System;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;
using AForge.Video;
using AForge.Video.DirectShow;

namespace AForgeCameraCapturePriject_05040913
{
    public partial class Form1 : Form
    {
        private FilterInfoCollection CaptureDevice;
        private VideoCaptureDevice VideoDevice;
        public Form1()
        {
            InitializeComponent();
            getallcameralist();
            btn_close.Enabled = false;
        }
        void getallcameralist()
        {
            CaptureDevice = new FilterInfoCollection(FilterCategory.VideoInputDevice);
            foreach (FilterInfo Devices in CaptureDevice)
            {
                comboBox_cameralist.Items.Add(Devices.Name);
                comboBox_cameralist.SelectedIndex = 0;
            }
        }
        
        private void btn_start_Click(object sender, EventArgs e)
        {
            if (comboBox_cameralist.SelectedIndex != -1 ) 
            {
                try
                {
                    VideoDevice = new VideoCaptureDevice(CaptureDevice[comboBox_cameralist.SelectedIndex].MonikerString);
                    VideoDevice.NewFrame += new NewFrameEventHandler(NewVideoFrame);
                    VideoDevice.Start();
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
            }
        }
        private void NewVideoFrame(object sender, NewFrameEventArgs eventArgs)
        {
            pictureBox1.Image?.Dispose();
            pictureBox1.Image = (Bitmap)eventArgs.Frame.Clone();
        }

        private void btn_capture_Click(object sender, EventArgs e)
        {

            pictureBox2.Image = (Bitmap)pictureBox1.Image.Clone();
            DateTime dt = DateTime.Now;

            string fileName = @"c:\Image\" + dt.ToString("yyyyMMdd") + "_" + dt.ToString("HHmmss") + "-" +   ".jpg";//+textbox1.Text+
            var bitmap = new Bitmap(pictureBox2.Width, pictureBox2.Height);
            pictureBox2.DrawToBitmap(bitmap, pictureBox2.ClientRectangle);

            System.Drawing.Imaging.ImageFormat imageFormat = null;

            imageFormat = System.Drawing.Imaging.ImageFormat.Jpeg;
            bitmap.Save(fileName, imageFormat);
        }
        private void btn_stop_Click(object sender, EventArgs e)
        {
            if (VideoDevice.IsRunning == true)
            {
                VideoDevice.Stop();
            }
        }
        private void Form1_Load(object sender, EventArgs e)
        {
        }

        private void button1_Click(object sender, EventArgs e)
        {
            FilterInfoCollection videoDevices = new FilterInfoCollection(FilterCategory.VideoInputDevice);
            string deviceMoniker = videoDevices[1].MonikerString;

            VideoCaptureDevice videoSource = new VideoCaptureDevice(deviceMoniker);

            VideoCapabilities[] videoCapabilities = videoSource.VideoCapabilities;

            int desiredWidth = 1920;
            int desiredHeight = 1080;
            VideoCapabilities desiredResolution = videoCapabilities.FirstOrDefault(r => r.FrameSize.Width == desiredWidth && r.FrameSize.Height == desiredHeight);

            if (desiredResolution != null)
            {
                videoSource.VideoResolution = desiredResolution;
            }
            videoSource.NewFrame += new NewFrameEventHandler(video_NewFrame);
            videoSource.Start();
            videoSource.SignalToStop();
        }
        private static void video_NewFrame(object sender, NewFrameEventArgs eventArgs)
        {
            Bitmap videoFrame = (Bitmap)eventArgs.Frame.Clone();
        }
    }
}

宜しくお願い致します

■No101752 (魔界の仮面弁士 さん) に返信
> 2023/04/15(Sat) 20:36:20 編集(投稿者)
> 
丁寧にお答えいただきありがとうございます

ご指摘頂きました閉じた場合については

        private void Form1_FormClosing(object sender, FormClosingEventArgs e)
        {
            if (VideoDevice != null)
            {

                if (VideoDevice.IsRunning == true)
                {
                    VideoDevice.Stop();
                }
            }
            Application.Exit();
        }
        private void btn_stop_Click(object sender, EventArgs e)
        {
            if (VideoDevice.IsRunning == true)
            {
                VideoDevice.Stop();
            }
            comboBox_cameralist.Enabled = true;
            btn_capture.Enabled = false;
            btn_start.Enabled = true;
            btn_stop.Enabled = false;
        }

このようにさせて頂きました
あと解像度の変更の事ですが自分なりに調べて

using System;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using AForge.Video;
using AForge.Video.DirectShow;
using System.Net.Sockets;
using System.Net;

namespace AForgeCameraCapturePriject_05040913
{
    public partial class Form1 : Form
    {
        private FilterInfoCollection CaptureDevice;
        private VideoCaptureDevice VideoDevice;
        private VideoCaptureDevice videoSource;
        private object videoDevices;

        public object VideoDevices { get; private set; }

        public Form1()
        {
            InitializeComponent();
            getallcameralist();
            btn_close.Enabled = false;
        }

    void getallcameralist()
        {
            CaptureDevice = new FilterInfoCollection(AForge.Video.DirectShow.FilterCategory.VideoInputDevice);
            foreach (AForge.Video.DirectShow.FilterInfo Devices in CaptureDevice)
            {
                comboBox_cameralist.Items.Add(Devices.Name);
                comboBox_cameralist.SelectedIndex = 0;
            }
        }
        
        private void btn_start_Click(object sender, EventArgs e)
        {
            if (comboBox_cameralist.SelectedIndex != -1 ) 
            {
                try
                {
                    VideoDevice = new VideoCaptureDevice(CaptureDevice[comboBox_cameralist.SelectedIndex].MonikerString);
                    VideoDevice.NewFrame += new NewFrameEventHandler(NewVideoFrame);
                    VideoDevice.Start();
                    comboBox_cameralist.Enabled = false;
                    btn_capture.Enabled = true;
                    btn_stop.Enabled = true;
                    btn_close.Enabled = true;
                    btn_start.Enabled = false;
                }
                catch (Exception ex)
                {
                    MessageBox.Show(ex.Message);
                }
            }
        }
        private void btnResolution_Click_1(object sender, EventArgs e)
        {
            this.cmbResolution.Items.Clear();
            videoSource = new VideoCaptureDevice(CaptureDevice[comboBox_cameralist.SelectedIndex].MonikerString);
            foreach (var cap in videoSource.VideoCapabilities)
            {
                this.cmbResolution.Items.Add(string.Format("({0},{1})", cap.FrameSize.Width, cap.FrameSize.Height));
            }
            if (this.cmbResolution.Items.Count > 0)
            {
                this.cmbResolution.SelectedIndex = 0;
            }
        }

WEBカメラの解像度を取得する所まで行きました
あとコンボボックスで選択した解像度をWEBカメラに反映させるところで
つまづいています。何かヒントを頂けたらありがたいです
宜しくお願い致します

■No101786 (魔界の仮面弁士 さん) に返信

ありがとうございます

最初の質問で解像度の変更を色々試みてはいるのですが
なかなか変わらないのです
どこがおかしいか教えて頂ければ幸いです

using System;
using System.Drawing;
using System.Linq;
using System.Windows.Forms;
using AForge.Video;
using AForge.Video.DirectShow;

namespace WindowsFormsApp63
{
    public partial class Form1 : Form
    {
        private FilterInfoCollection CaptureDevice;
        private VideoCaptureDevice VideoDevice; 

        public Form1()
        {
            InitializeComponent();

            CaptureDevice = new FilterInfoCollection(FilterCategory.VideoInputDevice);

            if (CaptureDevice.Count > 0)
            {
                VideoDevice = new VideoCaptureDevice(CaptureDevice[1].MonikerString);
                VideoDevice.NewFrame += new NewFrameEventHandler(video_NewFrame);
                VideoDevice.Start();
            }
        }
        private void video_NewFrame(object sender, NewFrameEventArgs eventArgs)
        {
            using (Bitmap bitmap = (Bitmap)eventArgs.Frame.Clone())
            {
                pictureBox.Image?.Dispose();
                pictureBox.Image = (Bitmap)eventArgs.Frame.Clone();
            }

        }
        private void button2_Click(object sender, EventArgs e)
        {
            VideoDevice.Stop();
            VideoDevice = new VideoCaptureDevice(CaptureDevice[1].MonikerString);
            VideoDevice.NewFrame += new NewFrameEventHandler(video_NewFrame);
            VideoDevice.VideoResolution = VideoDevice.VideoCapabilities.FirstOrDefault(c => c.FrameSize.Width == 1920 && c.FrameSize.Height == 1080);
            VideoDevice.Start();
        }
.........