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• I've download ffmpeg source code,but I don't know how to use it on anroid

  23 octobre 2013, par Sravanthi Pasaragonda

  I've download ffmpeg source code,but I don't know how to use it on anroid.I need to remove audio from vedio file and i need to add other audio to vedio.This is my Task .I am using ubutu 10.04 ,And i have installed NDK-r9,ffmpeg and yasm 1-2.0 in my system.
  please any sample process to how to start ffmpeg example,i have downloaded lot of example from GITHUB Like

      https://github.com/appunite/AndroidFFmpeg
  
      http://www.roman10.net/how-to-build-android-applications-based-on-ffmpeg-by-an-example/
  
      https://github.com/mconf/android-ffmpeg
  
  
  
  
  
  
  
  But i dont no how to complie all projects using ffmpeg.

  Please give me step by step process for any ffmpeg example in ubutu.

  Thanks

• How can i use ffmpeg to capture the entire desktop but without the console window of the ffmpeg ? [duplicate]

  1er novembre 2017, par Simonicop cooper

  This question already has an answer here :

  • Launching process in C# Without Distracting Console Window
    
    4 answers
    

  This is how i’m doing it in the command prompt :

  ffmpeg -f gdigrab -framerate 24 -i desktop -preset ultrafast -pix_fmt yuv420p out.mp4

  And in csharp code :

  using System;  
  
  using System.Collections.Generic;  
  
  using System.Linq;  
  
  using System.Text;  
  
  using System.Threading.Tasks;  
  
  using System.IO;  
  
  using System.Diagnostics;  
  
  
  
  namespace Ffmpeg_App  
  
  {  
  
      class Ffmpeg  
  
      {  
  
          Process process;  
  
  
  
          public void Start(string FileName, int Framerate)  
  
          {  
  
              process = new System.Diagnostics.Process();  
  
              process.StartInfo.FileName = @"D:\ffmpegx86\ffmpeg.exe"; // Change the directory where ffmpeg.exe is.  
  
              process.EnableRaisingEvents = false;  
  
              process.StartInfo.WorkingDirectory = @"D:\ffmpegx86"; // The output directory  
  
              process.StartInfo.Arguments = @"-f gdigrab -framerate " + Framerate + " -i desktop -preset ultrafast -                                                                     pix_fmt yuv420p " + FileName;  
  
              process.Start();  
  
              process.StartInfo.UseShellExecute = false;  
  
              process.StartInfo.CreateNoWindow = false;  
  
              Close();  
  
          }  
  
  
  
          public void Close()  
  
          {  
  
              process.Close();  
  
          }  
  
      }  
  
  }  

  In form1 top :

  Ffmpeg fpeg = new Ffmpeg();

  Start button :

  private void Start_Click(object sender, EventArgs e)  
  
          {  
  
              fpeg.Start("test.mp4", 24);  
  
          }  

  Stop button :

  private void Stop_Click(object sender, EventArgs e)  
  
          {  
  
              fpeg.Close();  
  
          } 

  The problem is when i start recording it also recording first few seconds the console window of the ffmpeg too same when i stop the recording.

  How can i make in both cases using only command prompt or using with csharp that it will not show the console window of the ffmpeg ?

  Ffmpeg console window

• avfilter/window_func : add tukey window function

  5 janvier 2016, par Paul B Mahol

  avfilter/window_func : add tukey window function
  Signed-off-by : Paul B Mahol <onemda@gmail.com>
  

  • [DH] doc/filters.texi
  • [DH] libavfilter/avf_showfreqs.c
  • [DH] libavfilter/avf_showspectrum.c
  • [DH] libavfilter/window_func.c
  • [DH] libavfilter/window_func.h