使用vb.net或ffmpeg或ff探头获取视频持续时间

Question

我想要获得视频的持续时间使用ffmpeg或ff探头与vb.net。但我根本不知道如何使用ffmpeg或ff探头。有人能帮忙吗？对于像我这样的人来说，这是一个起点。

Answer 1

Private Function lengthOfAudioFile(locOfFFPROBE As String, fileLoc As String) As String

    Dim myprocess As New Process
    Dim lines As String = ""

    With myprocess
        .StartInfo.FileName = locOfFFPROBE & "ffprobe.exe"
        .StartInfo.Arguments = " -i " & fileLoc & " -show_entries format=duration -v quiet -of csv=" & """p=0"""
        .StartInfo.WindowStyle = ProcessWindowStyle.Hidden
        .StartInfo.CreateNoWindow = True
        .StartInfo.RedirectStandardOutput = True
        .StartInfo.UseShellExecute = False
        .Start()
    End With

    lines = myprocess.StandardOutput.ReadToEnd

    lengthOfAudioFile = lines.ToString

End Function

“当单击按钮以测试音频文件的长度时，将启动此子例程。

Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
    MsgBox(lengthOfAudioFile("ENTER YOUR FFPROBE LOCATION", "ENTER THE AUDIO FILE YOU WANT TO TEST"))
End Sub

FFPROBE位置类似于"C:\FFMPEG\“音频文件位置，类似于"C:\AudioFile\test.mp3”输出的长度(以秒为单位)。

对伊万的回答大声呼喊：How to extract duration time from ffmpeg output?