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• i m not able to play my video in my phone after merging through ffmpeg in flutter ?

  16 juin 2021, par Muhammad Arbaz Zafar

  this is my code

  


  void _videoMerger() async {


    final appDir = await syspaths.getApplicationDocumentsDirectory();
    String rawDocumentPath = appDir.path;
    final outputPath = '$rawDocumentPath/outputPath.mp4';
    final FlutterFFmpeg _flutterFFmpeg = new FlutterFFmpeg();
    String commandToExecute = ' -i ${_storedVideoOne.path} -i ${_storedVideoTwo.path} -filter_complex "[0:v][1:v]concat=n=2:v=1:a=0[out]" -map "[out]" $outputPath.mp4';
    _flutterFFmpeg.execute(commandToExecute).then((rc) => print("FFmpeg process exited with rc $rc"));

    await MediaStore.saveFile(outputPath);

  }


  


  my video merged and i get file in my mobile and then i try to play but its not able to play after that i built my code in emulator and merge vide then merge video successfuly but still not able to play my merge video so guys any solution ?

  


• Thumbnail generation in Laravel with FFmpeg

  28 mai 2023, par hehehhehehe

  Using FFmpeg video upload is successful in the database, but the file is not found in the storage directory. I want to make a thumbnail of the video that has just been uploaded using FFmpeg in Laravel. When viewed in the database it has been uploaded, but when viewed in the Laravel storage directory the file does not exist. What is the solution ?

  


  $store = new Post();
$files = $request->file('file');
$ext = $files->getClientOriginalExtension();
if ($ext == 'mp4' || $ext == 'mkv' || $ext == 'webm') {
   $ext = $request->file('file')->extension();
   $final = 'video' . time() . '.' . $ext;
   $request->file('file')->move(storage_path('app/public/uploads/video/'), $final);
   $store->file = $final;

   // For Thumbnail
   $thumbnailName = 'thumbnail' . time() . '.jpg';
   $thumbnailPath = storage_path('app/public/uploads/video/thumbnails/') . $thumbnailName;

   $ffmpegCommand = "ffmpeg -i " . storage_path('app/public/uploads/video/') . $final . " -ss   00:00:01.00 -vframes 1 " . $thumbnailPath;
   exec($ffmpegCommand);

   $store->thumbnail = $thumbnailName;
}


  


  I've looked and tried coding based on the latest documentation, but it still can't run.

  


• FFMPEG concatenate multiply files with various extensions and properties

  28 juillet 2022, par KRUK

  I'm trying to create a movie on Windows using ffmpeg from files that are from different devices and in different extensions (.mp4, .mov). Is there any way to combine any file extensions into one final movie that will play properly ?

  


  I'm thinking of such an approach, to first normalize all files to the same format (What is the recommended final format ?) and only then combine them into a final file.

  


  I am experimenting with this approach :

  


  ffmpeg -i [input.anyFormatX] outputX.mp4


  


  and then

  


  ffmpeg -f concat -i [List of files] output.mp4


  


  But unfortunately this does not work for all files, should pay attention to the codecs or maybe some other intermediate format ? The biggest problem appears with files recorded with Iphone and in extension .mov. After the first stage, these videos look overburnt, as if they have a lot of raised brightness, how to correct this ?

  


  Do you know perhaps any generic solution, which would allow the assembly of videos from different devices (including Iphone) and with different parameters such as frame rate or resolution ?