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• ffmpeg commands work locally but not on server using ffmpeg heroku buildpack

  26 août 2020, par Sarmad S.

  I am running the latest ffmpeg version. Commands work well locally and I am able to generate a video from images and to write text on the video and save in the desired format. However, not all commands work on server.

  


  I am using heroku as a hosting provider, and I have installed ffmpeg buidpack to be able to run ffmpeg commands.

  


  The problem is that not all commands work on server. For example when I wirte text on video, it does not allow space between -filter_complex drawtext commands and even the text. I get an error that complains about those spaces.
Even when I fix it (by removing spaces), it only generates an empty video (0 kb).

  


  Command :

  


  -filter_complex [1]drawtext=fontfile=exljbris-MuseoSansRounded-300.otf: text='here is some text': fontcolor=white: fontsize=38: box=1: boxcolor=black@0.5: boxborderw=5: x=(w-text_w)/2: y=(h-text_h)/2[v1]; [0][v1]vstack


  


  Generating a video from one image works fine on server for some reason. Not really sure what the problem is.

  


  locally i am running windows and using ffmpeg.exe to execute commands.

  


• Call to Process works fine with Debug, but it doesn't work in the installed application

  6 février 2019, par Santi

  I am developing a Windows Form program that has callings to ffmpeg library through the class Process.

  It works fine when I run it with the Debug in Visual Studio 2013. But when I install the program and I invoke the operation that call to the ffmpeg Process, it doesn’t work. The cmd screen appears an disappears and nothing happens.

  I have tried to know what can be happening getting a log file with the output of ffmpeg, in case it was a problem in the ffmpeg libraries. However, after executing it the log is empty, what means that the ffmpeg command has not been executed.

  Can someone help me, please ?

  The code is this :

  ProcessStartInfo startInfo = new ProcessStartInfo();
  
  startInfo.FileName = "cmd.exe";
  
  startInfo.Arguments = "/c " + ffmpegPath + " " + commandArguments;
  
  using (Process processTemp = new Process())
  
  {
  
      processTemp.StartInfo = startInfo;
  
      processTemp.EnableRaisingEvents = true;
  
      processTemp.Start();
  
      processTemp.WaitForExit();
  
  }

  I am invoking to cmd.exe (not directly ffmpeg.exe) because in the arguments sometimes there can be a pipe (that is why the command starts with "/c").

• x86/swr : make pack_8ch functions work with compilers without aligned stack

  15 février 2015, par James Almer

  x86/swr : make pack_8ch functions work with compilers without aligned stack
  Signed-off-by : James Almer <jamrial@gmail.com>
  

  • [DH] libswresample/x86/audio_convert.asm
  • [DH] libswresample/x86/audio_convert_init.c