我找不到任何方法来转换多个jpg或png到gif在vb.net中使用ffmpeg

Imports System.Diagnostics

Public Class Form1
    Private Sub ConvertToGif(ByVal inputFiles As List(Of String), ByVal outputFile As String)
        Dim ffmpegPath As String = "ffmpeg.exe" ' FFmpeg可执行文件的路径
        Dim arguments As String = "-f image2 -i ""input%d.jpg"" -vf ""fps=10"" -pix_fmt rgb24 """ & outputFile & """" ' FFmpeg命令行参数

        ' 构建FFmpeg命令行
        Dim processStartInfo As New ProcessStartInfo()
        processStartInfo.FileName = ffmpegPath
        processStartInfo.Arguments = arguments
        processStartInfo.UseShellExecute = False
        processStartInfo.RedirectStandardOutput = True
        processStartInfo.CreateNoWindow = True

        ' 启动FFmpeg进程
        Dim process As Process = New Process()
        process.StartInfo = processStartInfo
        process.Start()

        ' 等待转换完成
        process.WaitForExit()

        ' 检查输出文件是否存在
        If System.IO.File.Exists(outputFile) Then
            MessageBox.Show("转换完成！")
        Else
            MessageBox.Show("转换失败！")
        End If
    End Sub

    Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Dim inputFiles As New List(Of String)()
        inputFiles.Add("input1.jpg")
        inputFiles.Add("input2.jpg")
        inputFiles.Add("input3.jpg")
        Dim outputFile As String = "output.gif"

        ConvertToGif(inputFiles, outputFile)
    End Sub
End Class