vb.net - ffmpeg 使用 screen-capture-recorder cmd 截屏在 vb 中不起作用

Question

我已经在 VB 中将 ffmpeg 作为进程启动，但单独捕获的 ffmpeg cmd 不起作用。我的代码是，我不知道如何解决问题，如果有任何帮助，不胜感激

proc.StartInfo.FileName = System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) & "\converter\bin\ffmpeg.exe"            
proc.StartInfo.Arguments = "-f dshow -i video=screen-capture-recorder screen.mp4"
proc.StartInfo.UseShellExecute = False
proc.StartInfo.WindowStyle = ProcessWindowStyle.Hidden
proc.StartInfo.RedirectStandardInput = True
proc.StartInfo.RedirectStandardOutput = True
proc.StartInfo.CreateNoWindow = True
proc.Start()

Answer 1

    This is my code

    Dim sAppPath As String
    Dim sCommand As String
    Dim sFilePath As String

    sCommand = AppSettings.Get("command")
    sFilePath = System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments)
    'Full HD
    sAppPath = System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) & "\converter\bin\ffmpeg.exe " & sCommand & " " & sFilePath & "\RENDER\" & m_sFileName & ".mp4"
    WriteLog("Testing " & sCommand & " " & sFilePath & " " & sAppPath)
    'sAppPath = System.Environment.GetFolderPath(Environment.SpecialFolder.MyDocuments) & "\converter\bin\ffmpeg.exe -f dshow  -vcodec rawvideo -s 1920x1080  -r 24 -pix_fmt yuv420p -i video=screen-capture-recorder -c:v libx264 -pix_fmt yuv420p -preset ultrafast -qp 0 -tune zerolatency -vf fps=24 -framerate 24 -y" & " C:\Users\Bode20\Documents\RENDER\" & m_sFileName & ".mp4"
    ProcID = Shell(sAppPath, AppWinStyle.MinimizedFocus)