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• avcodec/evc : Reference to ISO_IEC_23094-1-2020 document section for EVC_MAX_APS_COUNT...

  18 avril 2024, par Dawid Kozinski

  avcodec/evc : Reference to ISO_IEC_23094-1-2020 document section for EVC_MAX_APS_COUNT enum has been fixed
  Signed-off-by : Dawid Kozinski <d.kozinski@samsung.com>
  

  • [DH] libavcodec/evc.h

• FFMPEG Video not working on Social Media Platforms (Flutter-FFMPEG)

  29 avril 2022, par Raj Dhakad

  I am using Flutter-FFMPEG a Flutter library based on Mobile FFMPEG. I am creating a video from a list of .bmp images. The video works plays normally in devices media player on android or desktop.

  


  But when I tried to share that video on social media like say Instagram it says file format not supported.

  


  It didn't use to work on WhatsApp but after some googling, I made some changes and it works on WhatsApp and Youtube now but not on Instagram, Linkedin, etc.

  


  void _runFFmpeg() async {
    print('Run FFMPEG');
   
    var dir = await getApplicationDocumentsDirectory();
    var output = await getExternalStorageDirectory();
    String videoSize = '$ImageWidth:$ImageSize';
    print("${ImageWidth}x$ImageSize");
    var arguments = [
      "-y", // replace output file if it already exists
      "-i", "${output.path}/frame_%d.bmp",
       
      "-s", '${ImageWidth}x$ImageSize',
      "-framerate", "30", // framrate
      
      "-c:v", "libvpx",
      
      '-ab', '128k',
      '-ar', '44100',
      '-strict', 'experimental',
     
      "-vcodec", "libx264",

      "-pixel_format", "yuv420p",

      "-preset", "ultrafast",

      "-tune", "animation",

      "${output.path}/test.mp4"
    ];
   
    await _flutterFFmpeg.executeWithArguments(arguments).then((rc) {
      print('Process done with $rc');
      
    });


  


  


  


  • The plugin I am using (Flutter-FFMPEG) didn't support libx264

    


  


  • I tried using '-profile:v' to baseline but that gives an error, saying Error setting profile to baseline.

    


  


  • Also, I tried to first make a .webm file and then convert that to mp4. I was also able to use '-profile:v' when converting .webm to mp4 and gave no error but the output video didn't work on Social Media platforms.

    


  


  


  


• how to prevent ffmpeg closure when press Ctrl+Alt+Del keys ? (When using gdigrab) [on hold]

  16 novembre 2015, par Mitra M

  This is a simple command for capture screen by the ffmpeg and gdigrab option :

  ffmpeg -f gdigrab -framerate 25 -i desktop -an o.avi

  It works, But the ffmpeg will be closed if I press Ctrl+Alt+Del keys during capture.(to run task manager)

  How can I solve this problem ?

  Note : I know that we can run the task manager by using Ctrl+Shift+Esc keys or taskmgr.exe in the cmd, But I need to press Ctrl+Alt+Del keys during capture.

  OS = Windows 8.1

  FFmpeg = Zeraone build