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• FFmpeg : Copy 'location' metadata to output file name

  11 avril 2023, par Kristian

  I have a FFmpeg batch script for downscaling all videos in a directory. The videos have been recorded in different forests, and I would like to write the geolocation as the output file name.

  


  Currenly, my script is

  


  FOR /F "tokens=*" %G IN ('dir /b *.MP4') DO "c:\Program Files\ffmpeg\bin\ffmpeg.exe" -i "%G"  -vf "scale=trunc(iw/10)*2:trunc(ih/10)*2" -vcodec libx265 -crf 20 "%~nG_komprimeret.mp4"


  


  When I look at the file's metadata, I can see the location

  


  Output #0, mp4, to 'GH013764_komprimeret.mp4':
  Metadata:
    major_brand     : mp41
    minor_version   : 538120216
    compatible_brands: mp41
    firmware        : HD7.01.01.90.00
    location        : +56.1710+009.5756/
    location-eng    : +56.1710+009.5756/


  


  My files output should be named something like GH013764_komprimeret_+56.1710+009.5756.mp4.

  


  How is it possible to include the location metadata in the output file name ?

  


• which port ffmpeg is using for streaming to a rtmp(or rtmps) server running in a cloud location

  12 janvier 2023, par elsa

  I am working with ffmpeg and rtmp camera streaming in a constrained environment.
I have rtmp server running on a cloud (say eg. 11.23.123.13 in port 1935 for rtmp & 4936 for rtmps).
However is there any port on sending end , i should request team to open to avoid blocking the stream sending from device end to rtmp server end(camera streaming end). Only port 443 is open in device where camera connected and ffmpeg commands are running.

  


  It would be helpful if somebody give insights on how network is connecting from ffmpeg encoder to rtmp server

  


  

  1. Getting the details how network is connecting from ffmpeg encoder to rtmp server ?

  


  2. Which ports to be open in device end(where camera connecting) to start ffmpeg streaming to rtmp server running on cloud ?

  


  


• Positioning the FFPlay window on the screen at a specific location

  15 juillet 2022, par bill

  My goal is to set the position of the ffplay window to some specific coordinates (e.g. 200 x 400).

  


  Initially, I tried using ffplay command line arguments, but I only found how to set window width and height, not position.

  


  Then I tried opening the process in a specific position with C#, but this didn't seem to affect the position of FFPlay

  


  Any suggestions will be appreciated

  


  Here is my code :

  


      static void Main(string[] args)
    {

        Process proccess = new Process();
        proccess.StartInfo.WindowStyle = ProcessWindowStyle.Normal;
        proccess.StartInfo.FileName = "C:\\ffmpeg\\x64\\ffplay.exe";
        proccess.StartInfo.Arguments = "udp://@127.0.0.1:5004?pkt_size=1316";
        proccess.Start();
        Thread.Sleep(100);
        IntPtr id = proccess.MainWindowHandle;
        Console.Write(id);
        Program.MoveWindow(proccess.MainWindowHandle, 0, 0, 500, 500, true);

    }

    [DllImport("user32.dll", SetLastError = true)]
    internal static extern bool MoveWindow(IntPtr hWnd, int X, int Y, int nWidth, int nHeight, bool bRepaint);