C# 指定秒数でサムネイル作成①

特定フォルダ以下のmp4のサムネイルを指定秒数で取得したくなった。取得をするたびに新しいタブページを追加する。ダブルクリックすると、explorerで開く。

実行ファイルと同じ場所にffmpeg.exeが必要。

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace themenail
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
            toolStripProgressBar1.Visible  = false;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            if (textBox1.Text == "" || textBox2.Text == "") return;

            toolStripProgressBar1.Visible = true;

            string path = textBox2.Text;
            string[] files;

            TabPage tp = new TabPage();
            ListView lv = new ListView();
            ImageList il = new ImageList();

            il.ImageSize = new Size(255, 255);
            il.ColorDepth = ColorDepth.Depth32Bit;

            lv.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right;
            lv.Size = new Size(tp.Size.Width-2,tp.Height-3);
            lv.Top = 2;
            lv.LargeImageList = il;
            lv.MouseDoubleClick += new MouseEventHandler(DbClick);

            tp.Controls.Add(lv);
            tabControl1.Controls.Add(tp);
            tabControl1.SelectedTab = tp;

            try
            {
                files = System.IO.Directory.GetFiles(path, "*.mp4",System.IO.SearchOption.AllDirectories);
                toolStripProgressBar1.Minimum = 0;
                toolStripProgressBar1.Maximum = files.Length;

                for (int i = 0; i < files.Length; i++)
                {
                    Application.DoEvents();
                    toolStripProgressBar1.Value = i;

                    System.Diagnostics.ProcessStartInfo ps = new System.Diagnostics.ProcessStartInfo(
                        Application.StartupPath + @"\ffmpeg.exe", "-ss " + textBox1.Text + " -i \"" + files[i] + "\" -vframes 1 -f image2 pipe:1");
                    ps.RedirectStandardOutput = true;
                    ps.CreateNoWindow = true;
                    ps.UseShellExecute = false;

                    System.Diagnostics.Process p = new System.Diagnostics.Process();
                    p.StartInfo = ps;
                    p.Start();

                    Image img = Image.FromStream(p.StandardOutput.BaseStream);
                    Image theme = img.GetThumbnailImage(255, 255, null, IntPtr.Zero);

                    il.Images.Add(theme);
                    lv.Items.Add(files[i], i);
                }
            }
            catch (Exception ex)
            {
                MessageBox.Show(ex.Message);
            }

            toolStripProgressBar1.Visible = false;

            MessageBox.Show("完了");
        }

        private void DbClick(object sender, MouseEventArgs e)
        {
            string path =  ((ListView)sender).SelectedItems[0].Text;
            System.Diagnostics.Process p = new System.Diagnostics.Process();
            p.StartInfo.FileName = "explorer";
            p.StartInfo.Arguments = "/select," + path;
            p.Start();
        }
    }
}

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

namespace themenail

{

public partial class Form1 : Form

{

public Form1()

{

InitializeComponent();

toolStripProgressBar1.Visible = false;

}

private void button1_Click(object sender, EventArgs e)

{

if (textBox1.Text == "" || textBox2.Text == "") return;

toolStripProgressBar1.Visible = true;

string path = textBox2.Text;

string[] files;

TabPage tp = new TabPage();

ListView lv = new ListView();

ImageList il = new ImageList();

il.ImageSize = new Size(255, 255);

il.ColorDepth = ColorDepth.Depth32Bit;

lv.Anchor = AnchorStyles.Top | AnchorStyles.Bottom | AnchorStyles.Left | AnchorStyles.Right;

lv.Size = new Size(tp.Size.Width-2,tp.Height-3);

lv.Top = 2;

lv.LargeImageList = il;

lv.MouseDoubleClick += new MouseEventHandler(DbClick);

tp.Controls.Add(lv);

tabControl1.Controls.Add(tp);

tabControl1.SelectedTab = tp;

try

{

files = System.IO.Directory.GetFiles(path, "*.mp4",System.IO.SearchOption.AllDirectories);

toolStripProgressBar1.Minimum = 0;

toolStripProgressBar1.Maximum = files.Length;

for (int i = 0; i < files.Length; i++)

{

Application.DoEvents();

toolStripProgressBar1.Value = i;

System.Diagnostics.ProcessStartInfo ps = new System.Diagnostics.ProcessStartInfo(

Application.StartupPath + @"\ffmpeg.exe", "-ss " + textBox1.Text + " -i \"" + files[i] + "\" -vframes 1 -f image2 pipe:1");

ps.RedirectStandardOutput = true;

ps.CreateNoWindow = true;

ps.UseShellExecute = false;

System.Diagnostics.Process p = new System.Diagnostics.Process();

p.StartInfo = ps;

p.Start();

Image img = Image.FromStream(p.StandardOutput.BaseStream);

Image theme = img.GetThumbnailImage(255, 255, null, IntPtr.Zero);

il.Images.Add(theme);

lv.Items.Add(files[i], i);

}

catch (Exception ex)

{

MessageBox.Show(ex.Message);

}

toolStripProgressBar1.Visible = false;

MessageBox.Show("完了");

}

private void DbClick(object sender, MouseEventArgs e)

{

string path = ((ListView)sender).SelectedItems[0].Text;

System.Diagnostics.Process p = new System.Diagnostics.Process();

p.StartInfo.FileName = "explorer";

p.StartInfo.Arguments = "/select," + path;

p.Start();

}